-
question_answer1)
Among the terms listed below, those that are not technically correct names for a floral whorl are (NCERT Exemplar) |
I. androecium |
II. carpel |
III. corolla |
IV. sepal |
A)
I and IV done
clear
B)
III and IV done
clear
C)
II and IV done
clear
D)
I and II done
clear
View Solution play_arrow
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question_answer2)
Identify A to G in following figure and answer accordingly. |
|
A)
A-Ovary, B-Filament, C-Sepal, D-Petal, E-Style, F-Stigma, G-Anther done
clear
B)
A-Sepal, B-Ovary, C-Petal, D-Filament, E-Anther, F-Stigma, G-Style done
clear
C)
A-Ovary, B-Sepal, C-Filament, D-Petal, E-Anther, F-Stigma, G-Style done
clear
D)
A-Petal, B-Anther, C-Stigma, D-Style, E-Filament F-Sepal, G-Ovary done
clear
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question_answer3)
Proximal end of the filament of stamen is attached to the
A)
anther done
clear
B)
connective done
clear
C)
placenta done
clear
D)
thalamus or petal done
clear
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question_answer4)
Identify A and B in the diagram given below. |
|
A)
A-Pistil, B-Stamen done
clear
B)
A-Stamen, B-Stigma done
clear
C)
A-Anther, B-Filament done
clear
D)
A-Stamen, B-Pistil done
clear
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question_answer5)
A typical angiosperm anther is
A)
bilobed done
clear
B)
dithecous done
clear
C)
Both [a] and [b] done
clear
D)
monothecous done
clear
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question_answer6)
Identify A to D in the following diagram. |
|
A)
A - Filament (stalk), B - Pollen sac, C - Pollen grain, D - Line of dehiscence done
clear
B)
A - Filament (stalk), B - Pollen sac, C - Line of dehiscence, D - Pollen grain done
clear
C)
A - Line of dehiscence, B - Filament (stalk), C - Pollen sac, D - Pollen grains done
clear
D)
A - Filament (stalk), B - Line of dehiscence, C - Pollen sac, D - Pollen grains done
clear
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question_answer7)
The lengthwise running groove on anther which separate theca is called
A)
rupture line done
clear
B)
line of dehiscence done
clear
C)
suture of anther done
clear
D)
None of these done
clear
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question_answer8)
The outermost and innermost wall layers of microsporangium in an anther are respectively.
A)
Endothecium and tapetum done
clear
B)
Epidermis and endodermis done
clear
C)
Epidermis and middle layer done
clear
D)
Epidermis and tapetum done
clear
View Solution play_arrow
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question_answer9)
Pollen grains of different plants differ in
A)
size and shape done
clear
B)
colour and design done
clear
C)
size, shape and design done
clear
D)
size, shape, colour and design done
clear
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question_answer10)
Microsporogenesis is the
A)
development of megaspore done
clear
B)
development of pollen grain done
clear
C)
development of male gametophyte done
clear
D)
development of female gametophyte done
clear
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question_answer11)
During microsporogenesis, meiosis occurs in
A)
endothecium done
clear
B)
microspore mother cells done
clear
C)
microspore tetrads done
clear
D)
pollen grains done
clear
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question_answer12)
Microspore tetrad (pollen grains) is the result of
A)
mitotic cell division done
clear
B)
meioticcell division done
clear
C)
Both [a] and [b] done
clear
D)
None of the above done
clear
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question_answer13)
The following is the diagram of TS of anther. Identify the parts labelled A, B and C. |
|
A)
A-Connective tissue, B-Endothecium, C-Pollen grain done
clear
B)
A-Endothecium, B-Connective tissue, C- Pollen grain done
clear
C)
A-Pollen grain, B-Connective tissue, C-Endothecium done
clear
D)
A-Endothecium. B-Pollen grain, C-Connective tissue done
clear
View Solution play_arrow
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question_answer14)
Which of the following perform microsporogenesis?
A)
Microspore mother cell done
clear
B)
Pollen mother cell done
clear
C)
Both [a] and [b] done
clear
D)
None of the above done
clear
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question_answer15)
Tapetal cells are characterised by the presence of dense cytoplasm and one nuclei.
A)
True done
clear
B)
False done
clear
C)
Cannot say done
clear
D)
Partially true or false done
clear
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question_answer16)
The pollen grain is
A)
an immature male gametophyte done
clear
B)
a mature male gametophyte done
clear
C)
partially developed male gametophyte done
clear
D)
last stage of male gametophyte done
clear
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question_answer17)
Pollens have two prominant walls which are ...A.. and ...B.. . Here, A and B refers to
A)
A-intine, B-protein coat done
clear
B)
A-exine, B-intine done
clear
C)
A-sporopollenin, B-intine done
clear
D)
A-sporopollenin, B-exine done
clear
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question_answer18)
Which of the following statements about sporopollenin are true? |
I. Exine is made up of sporopollenin. |
II. Sporopollenin is one of the most, resistant organic materials. |
III. Sporopollenin can withstand high temperatures and strong acids. |
IV. So far no enzyme is known to degrade sporopollenin. |
Codes
A)
I and II done
clear
B)
III and IV done
clear
C)
I and III done
clear
D)
All of these done
clear
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question_answer19)
Intine is made up of
A)
cellulose done
clear
B)
pectin done
clear
C)
Both [a] and [b] done
clear
D)
protein done
clear
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question_answer20)
The functions of germ pore is/are
A)
emergence of radicle done
clear
B)
absorption of water for seed germination done
clear
C)
initiation of pollen tube done
clear
D)
All of the above done
clear
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question_answer21)
Male gametophyte in angiosperms produces
A)
single sperm and two vegetative cells done
clear
B)
three sperms done
clear
C)
two sperms and a vegetative cell done
clear
D)
single sperm and a vegetative cell done
clear
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question_answer22)
60% of the angiosperms shed their pollens at the
A)
2-celled stage done
clear
B)
3-celled stage done
clear
C)
4-celled stage done
clear
D)
1-celled stage done
clear
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question_answer23)
Viability of pollen grains depends on
A)
temperature done
clear
B)
humidity done
clear
C)
Both [a] and [b] done
clear
D)
pressure done
clear
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question_answer24)
Pollen tablets are available in the market for
A)
in vitro fertilisation done
clear
B)
breeding programmes done
clear
C)
supplementing food done
clear
D)
ex situ conservation done
clear
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question_answer25)
Identify the type of pistil in the diagram. |
|
A)
Multicarpellary, apocarpous done
clear
B)
Multicarpellary, syncarpous done
clear
C)
Multicarpellary, pistillate done
clear
D)
Monocarpellary, apocarpous done
clear
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question_answer26)
Identify the various parts A to C in the given diagram of an ovule.
A)
A-Embryo sac, B-lnner integuments, C-Outer integuments done
clear
B)
A-lnner integuments, B-Nucellus, C-Chalazal done
clear
C)
A-Hilum, B-Funicle, C-Embryo sac done
clear
D)
A-Micropylarend, B-Hilum, C-lnner integuments done
clear
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question_answer27)
Match the items in Column I with those in Column II and choose the correct answer.
|
Column I |
|
Column II |
A |
Funicle |
1 |
Stalk of ovule |
B |
Integuments |
2 |
Protective envelopes of ovule |
C |
Chalaza |
3 |
Junction part of ovule and funicle |
D |
Hilum |
4 |
Basal part of the ovule |
Codes
A)
A-1 B-2 C-3 D-4 done
clear
B)
A-1 B-3 C-2 D-4 done
clear
C)
A-2 B-3 C-1 D-4 done
clear
D)
A-2 B-4 C-3 D-1 done
clear
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question_answer28)
A micropyle is a
A)
small pore through which water enters done
clear
B)
small aperture where no integuments are present done
clear
C)
small pore needed for seed existence done
clear
D)
All of the above done
clear
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question_answer29)
An ovule is a
A)
differentiated megasporangium done
clear
B)
dedifferentiated megasporangium done
clear
C)
integumented megasporangium done
clear
D)
redifferentiated megasporangium done
clear
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question_answer30)
Starting from the innermost part, the correct sequence of parts in an ovule is
A)
egg, nucellus, embryo sac, integument done
clear
B)
egg, embryo sac, nucellus, integument done
clear
C)
embryo sac, nucellus, integument, egg done
clear
D)
egg, integument, embryo sac, nucellus done
clear
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question_answer31)
What is A, B and C in the given figure of an embryo sac? |
|
A)
A-Antipodals, B-Polar nuclei, C-Synergids done
clear
B)
A-Antipodals, B-Central cells, C-Egg cells done
clear
C)
A-Synergids, B-Polar nuclei, C-Egg cells done
clear
D)
A-Synergids, B-Egg cells, C-Filiform apparatus done
clear
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question_answer32)
In majority of angiosperms
A)
egg has a filiform apparatus done
clear
B)
there are numerous antipodal cells done
clear
C)
reduction division occurs in the megaspore mother cells done
clear
D)
a small central cell is present in the embryo sac done
clear
View Solution play_arrow
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question_answer33)
In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be
A)
haploid done
clear
B)
diploid done
clear
C)
a few haploid and a few diploid done
clear
D)
with varying ploidy done
clear
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question_answer34)
In angiosperm functional megaspore develops into
A)
embryo sac done
clear
B)
ovule done
clear
C)
endosperm done
clear
D)
pollen sac done
clear
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question_answer35)
Which is the most common type of embryo sac in angiosperms?
A)
Tetrasporic with one mitotic stage of divisions done
clear
B)
Monosporic with three sequential mitotic divisions done
clear
C)
Monosporic with two sequential mitotic divisions done
clear
D)
Bisporic with two sequential mitotic divisions done
clear
View Solution play_arrow
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question_answer36)
Function of filiform apparatus is to
A)
recognise the suitable pollen at stigma done
clear
B)
stimulate division of generative cell done
clear
C)
produce nectar done
clear
D)
guide the entry of pollen tube done
clear
View Solution play_arrow
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question_answer37)
Identify the type of cell division A to D in the following flowchart. |
|
A)
A-Meiosis-I, B-Mitosis, C-Mitosis, D-Meiosis done
clear
B)
A-Meiosis-I, B-Meiosis-II, C-No division, D-Mitosis done
clear
C)
A-Mitosis, B-No division, C-Meiosis-II, D-Meiosis-I done
clear
D)
A-Mitosis, B-Mitosis, C-Meiosis-I, D-Meiosis-I done
clear
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question_answer38)
From the statements given below choose the option that are true for a typical female gametophyte. (NCERT Exemplar) |
I. It is 8-nucleate and 7-celled at maturity. |
II. It is free-nuclear during the development. |
III. It is situated inside the integument, but outside the nucellus. |
IV. It has an egg apparatus situated at the chalazal end. |
A)
I and IV done
clear
B)
II and III done
clear
C)
I and II done
clear
D)
II and IV done
clear
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question_answer39)
Autogamy stands for
A)
self-pollination in same flower done
clear
B)
pollination in two flowers done
clear
C)
self-pollination in different flower done
clear
D)
pollination by only one type of organism done
clear
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question_answer40)
Match the entries in Column I with those of Column II and choose the correct option from the codes given below.
| Column I | | Column II |
A | Cleistogamy | 1 | Pollination in open flower |
B | Geitonogamy | 2 | Pollination in bisexual flower which remain closed |
C | Chasmogamy | 3 | Pollination between flowers in the same plant |
D | Xenogamy | 4 | Cross-pollination |
Codes
A)
A-3 B-1 C-4 D-2 done
clear
B)
A-1 B-4 C-2 D-3 done
clear
C)
A-2 B-3 C-1 D-4 done
clear
D)
A-1 B-4 C-3 D-2 done
clear
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question_answer41)
The main advantage of cleistogamy is that it ensures
A)
cross-pollination done
clear
B)
seed setting even in the absence of pollinators done
clear
C)
protandry in flowers done
clear
D)
geitonogamy instead of autogamy done
clear
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question_answer42)
Which of the following statements are true about self-pollination? |
I. It is most economic method as wastage of pollen grain is minimum. |
II. Genetic stability can be maintained in the progeny through self-pollination. |
III. Undesirable characters can be eliminated through self- pollination. |
IV. Continued self-pollination may result in weaker progeny. |
Choose the correct option. |
A)
Statements I, II, IV are correct and III is incorrect done
clear
B)
Statement III is correct and I, II, IV are incorrect done
clear
C)
Statements I and III are correct and II, IV are incorrect done
clear
D)
All statements are correct done
clear
View Solution play_arrow
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question_answer43)
Transfer of pollen grains from the anther to the stigma of another flower of same plant is called
A)
geitonogamy done
clear
B)
chasmogamy done
clear
C)
xenogamy done
clear
D)
cleistogamy done
clear
View Solution play_arrow
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question_answer44)
Transfer of pollen grains from the anther to stigma of another flower of different plant is called
A)
geitonogamy done
clear
B)
xenogamy done
clear
C)
chasmogamy done
clear
D)
cleistogamy done
clear
View Solution play_arrow
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question_answer45)
Cross-pollination is preferred over self- pollination because it results in a better offspring.
A)
True done
clear
B)
False done
clear
C)
Cannot say done
clear
D)
Partially true or false. done
clear
View Solution play_arrow
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question_answer46)
Match the following columns.
| Column I (Agents of pollination) | | Column II (Technical terms) |
A | Wind | 1 | Anemophily |
B | Water | 2 | Hydrophily |
C | Insects | 3 | Entomophily |
D | Birds | 4 | Omithophily |
Codes
A)
A-1 B-2 C-3 D-4 done
clear
B)
A-1 B-3 C-2 D-4 done
clear
C)
A-4 B-2 C-3 D-1 done
clear
D)
A-2 B-3 C-4 D-1 done
clear
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question_answer47)
Autogamy can occur in a chasmogamons flower if both pollen and ovules mature simultaneously.
A)
True done
clear
B)
False done
clear
C)
Cannot say done
clear
D)
Partially true or false done
clear
View Solution play_arrow
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question_answer48)
Majority of plants use
A)
biotic agents for pollination done
clear
B)
non-biotic agents for pollination done
clear
C)
air for pollination done
clear
D)
animals for pollination done
clear
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question_answer49)
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by
A)
insects done
clear
B)
water done
clear
C)
wind done
clear
D)
animals done
clear
View Solution play_arrow
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question_answer50)
Which of the following feature(s) is/are common to both wind and water-pollinated flowers? |
I. Pollen grains are long and ribbon-like. |
II. Stigma is large and feathery. |
III. The flowers are not colourful. |
IV. The flowers do not produce nectar. |
A)
Only III and IV done
clear
B)
Only II and III done
clear
C)
Only I and II done
clear
D)
Only II done
clear
View Solution play_arrow
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question_answer51)
Pollen grain of water-pollinated plants are coated by covering to prevent it from wetting
A)
mucilage done
clear
B)
cuticle done
clear
C)
exine done
clear
D)
intine done
clear
View Solution play_arrow
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question_answer52)
Wind-pollinated plants differ from insect-pollinated plants in having
A)
small petals and sticky pollen done
clear
B)
small coloured petals and heavy pollen done
clear
C)
coloured petals and large pollen done
clear
D)
no petals and light pollen done
clear
View Solution play_arrow
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question_answer53)
Choose the mismatched option.
A)
Wind - Orasses - Anemophily done
clear
B)
Water - Zostero - Hydrophily done
clear
C)
Insects - Solvia - Entomophily done
clear
D)
Birds -Adansoni'a - Omithophily done
clear
View Solution play_arrow
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question_answer54)
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
A)
Monoecious plant bearing unisexual flowers done
clear
B)
Dioecious plant bearing only male or female flowers done
clear
C)
Monoecious plant with bisexual flowers done
clear
D)
Dioecious plant with bisexual flowers done
clear
View Solution play_arrow
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question_answer55)
Continued self-pollination results in
A)
inbreeding depression done
clear
B)
outbreeding depression done
clear
C)
hybrid vigour done
clear
D)
better results in offsprings done
clear
View Solution play_arrow
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question_answer56)
All the events from deposition of pollen grain on the stigma to the entry of pollen tube in the ovule are referred to as
A)
fertilization done
clear
B)
conjugation done
clear
C)
pollen-pistil interaction done
clear
D)
syngamy done
clear
View Solution play_arrow
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question_answer57)
Find out the correct sequence of events taking place in pollen-pistil interaction. |
I. Pollen tube enters one of the synergids and bursts to release male gametes. |
II. Pollen tube enters ovule through micropyle of ovary. |
III. Pollen tube grows through the stigmatic tissue and then style. |
IV. Pistil recognises the compatible pollen and accepts it. |
Choose the correct option. |
A)
\[IV\to III\to II\to I\] done
clear
B)
\[IV\to II\to III\to I\] done
clear
C)
\[I\to IV\to III\to II\] done
clear
D)
\[III\to IV\to II\to I\] done
clear
View Solution play_arrow
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question_answer58)
Pollen grain of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
A)
True done
clear
B)
False done
clear
C)
Cannot say done
clear
D)
Partially true or false done
clear
View Solution play_arrow
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question_answer59)
Self-incompatibility is a process to |
I. ensure cross-pollination |
II. prevent self-fertilisation |
III. ensure self-fertilisation |
IV. genetic control for self-fertilisation |
Choose the correct process for given statements. |
A)
I, II and III done
clear
B)
I, II, III and IV done
clear
C)
I, III and IV done
clear
D)
I, II and IV done
clear
View Solution play_arrow
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question_answer60)
Protandry is a condition in which
A)
anthers mature after stigma done
clear
B)
anthers and stigma mature at the same time done
clear
C)
anthers mature earlier than the stigma done
clear
D)
pollens of the same flower pollinates stigma done
clear
View Solution play_arrow
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question_answer61)
While planning for an artificial hybridisation programme involving dioecious plants, which of the following steps would not be relevant?
A)
Bagging of female flower done
clear
B)
Dusting of pollen on stigma done
clear
C)
Emasculation done
clear
D)
Collection of pollens done
clear
View Solution play_arrow
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question_answer62)
The process of removal of anther from the flower bud before it dehisces is called as
A)
emasculation done
clear
B)
bagging done
clear
C)
embryo rescue done
clear
D)
budding done
clear
View Solution play_arrow
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question_answer63)
Double fertilisation is
A)
fusion of two male gametes with one egg done
clear
B)
fusion of one male gamete with two polar nuclei done
clear
C)
fusion of two male gametes of pollen tube with two different eggs done
clear
D)
syngamy and triple fusion done
clear
View Solution play_arrow
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question_answer64)
Triple fusion involves
A)
fusion of one male gamete with female gamete done
clear
B)
fusion of tube nucleus with generative nucleus done
clear
C)
fusion of two polar nuclei done
clear
D)
fusion of second male gamete with two polar nuclei done
clear
View Solution play_arrow
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question_answer65)
In a fertilised embryo sac, the haploid, diploid and triploid structures are
A)
synergid, zygote and primary endosperm nucleus done
clear
B)
synergid, antipodal and polar nuclei done
clear
C)
antipodal, synergid and primary endosperm nucleus done
clear
D)
synergid, polar nuclei and zygote done
clear
View Solution play_arrow
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question_answer66)
In an embryo sac, the cells that degenerate after fertilisation are
A)
synergids and primary endosperm cell done
clear
B)
synergids and antipodals done
clear
C)
antipodals and primary endosperm cell done
clear
D)
egg and antipodals done
clear
View Solution play_arrow
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question_answer67)
In the given fertilised embryo sac, identify A to E. |
|
A)
Degenerating antipodal cell, B-Primary endosperm nucleus, C-Primary endosperm cell, D-Synergid cell, E-Zygote done
clear
B)
A-Synergid cell, B-Antipodal cell, C-Zygote, D-Endospermcell, E-Chalazal cell done
clear
C)
A-Degenerating synergids, B-Zygote, C-Primary endosperm cell, D-Primary endosperm nucleus, E-Degenerating antipodal cell done
clear
D)
A-Zygote, B-Synergid, C-Primary endosperm cell, D-Primary endosperm nucleus, E-Degenerating antipodal cell done
clear
View Solution play_arrow
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question_answer68)
The real function of the 'endosperm' is to
A)
supply nutrition to the growing embryo done
clear
B)
form integuments of ovule done
clear
C)
form funicle of ovule done
clear
D)
None of the above done
clear
View Solution play_arrow
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question_answer69)
Find out right statement(s). |
I. Most common endosperm is of nuclear type. |
II. Coconut water is male gametophyte. |
III. Coconut has both free nuclear and cellular types of endosperms. |
A)
I and II done
clear
B)
I and III done
clear
C)
II and III done
clear
D)
I, II and III done
clear
View Solution play_arrow
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question_answer70)
Endosperm is consumed by developing embryo in the seed of
A)
pea done
clear
B)
maize done
clear
C)
coconut done
clear
D)
castor done
clear
View Solution play_arrow
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question_answer71)
Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect?
A)
Ovary develops into fruit done
clear
B)
Zygote develops into embryo done
clear
C)
Central cell develops into endosperm done
clear
D)
Ovules develop into embryo sac done
clear
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question_answer72)
In the embryos of a typical dicot and a grass, true homologous structures are (NCERT Exemplar)
A)
coleorrhiza and coleoptile done
clear
B)
coleoptile and scutellum done
clear
C)
cotyledons and scutellum done
clear
D)
hypocotyl and radicle done
clear
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question_answer73)
In a seed of maize, scutellum is considered as cotyledon because it
A)
protects the embryo done
clear
B)
contains food for the embryo done
clear
C)
absorbs food materials and supplies them to the embryo done
clear
D)
converts itself into a monocot leaf done
clear
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question_answer74)
Match the columns representing ovular structure with post-fertilisation structure and select the correct option from the codes given below.
|
Column I |
|
Column II |
A |
Ovule |
1 |
Endosperm |
B |
Funiculus |
2 |
Aril |
C |
Nucellus |
3 |
Seed |
D |
Polar nuclei |
4 |
Perisperm |
Codes
A)
A-2 B-3 C-4 D-1 done
clear
B)
A-2 B-3 C-1 D-4 done
clear
C)
A-3 B-2 C-4 D-1 done
clear
D)
A-3 B-2 C-1 D-4 done
clear
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question_answer75)
Find out the correct statement(s). |
I. Endosperm formation is the prior event than embryo formation. |
II. Angiospermic and gymnospermic endosperm are 3n and n, respectively. |
III. Endospermic seeds are found in castor, barley and coconut. |
IV. In albuminous seed, food is stored in endosperm and in non-albuminous seeds, it is stored in cotyledons. |
A)
I and IV done
clear
B)
II and III done
clear
C)
I and III done
clear
D)
I, II, and IV done
clear
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question_answer76)
Match the following columns.
| Column I | | Column II |
A | Outer integuments | 1 | Testa |
B | Inner integuments | 2 | Tegmen |
C | Ovary | 3 | Fruit |
D | Ovules | 4 | Seed |
Codes
A)
A-1 B-3 C-2 D-4 done
clear
B)
A-3 B-4 C-1 D-2 done
clear
C)
A-1 B-2 C-3 D-4 done
clear
D)
A-4 B-3 C-2 D-1 done
clear
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question_answer77)
Number of seeds are equal to the
A)
number of ovules done
clear
B)
number of ovaries done
clear
C)
Both [a] and [b] done
clear
D)
None of these done
clear
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question_answer78)
Non-albuminous seed
A)
has endosperm done
clear
B)
has thick cotyledons done
clear
C)
have food storage in cotyledons done
clear
D)
Both [b] and [c] done
clear
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question_answer79)
Which is most crucial for seed storage?
A)
Dehydration and dormancy done
clear
B)
Endosperm and water done
clear
C)
Least amount of development done
clear
D)
Endosperm in large quantity done
clear
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question_answer80)
False fruit is a fruit in which
A)
Only chalazal cells take part in fruit development done
clear
B)
only embryo takes part in fruit development done
clear
C)
only ovary takes part in fruit development done
clear
D)
other floral parts participate in fruit development done
clear
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question_answer81)
Apomictic embryos in Citrus arise from
A)
synergids done
clear
B)
maternal sporogenous tissue in ovule done
clear
C)
antipodal cell done
clear
D)
haploid egg done
clear
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question_answer82)
The phenomenon wherein, the ovary develops into a fruit without fertilisation is called
A)
parthenocarpy done
clear
B)
apomixis done
clear
C)
asexual reproduction done
clear
D)
sexual reproduction done
clear
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question_answer83)
The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilisation is called
A)
parthenocarpy done
clear
B)
apomixes done
clear
C)
vegetative propagation done
clear
D)
sexual reproduction done
clear
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