7th Class Science Reproduction In Plants Question Bank

done Reproduction in Plants Total Questions - 20

• question_answer1)
  Which of the following is an incorrect match?
  A)

  Fruit	Agent of dispersal	Part of seed which helps in dispersal
  Drumstick	Wind	Wings of seed

  done clear
  B)

  Fruit	Agent of dispersal	Part of seed which helps in dispersal
  Madar	Water	Hairy seeds

  done clear
  C)

  Fruit	Agent of dispersal	Part of seed which helps in dispersal
  Coconut	Water	Spongy outer coat

                  done clear
  D)

  Fruit	Agent of dispersal	Part of seed which helps in dispersal
  Xanthium	Animals	Hooks in fruits

  done clear
  View Solution play_arrow

• question_answer2)

  Prashant observed flowers of two different plants X and Y. Flowers of X are large, coloured, showy and produce nectar while flowers of V are small, dull without nectar.

  Pollen grains of X are sticky and bigger while pollen grains of Y are small in size and dry.

  Which of the following is correct regarding X and Y?
  A)
  X could be pollinated by insect whereas Y could be pollinated by wind.       done clear
  B)
  X could be pollinated by wind whereas Y could be pollinated by water. done clear
  C)
  X could be pollinated by wind whereas Y could be pollinated by insect.      done clear
  D)
  X could be pollinated by water whereas Y could be pollinated by insect.     done clear
  View Solution play_arrow

• question_answer3)
  Read the given statements (i to vii) describing the events that lead to the maturation of a plant.                  

  (i) The root grows first.

  (ii) The seedling obtains the food it needs from the cotyledons.

  (iii) The part that comes out next is the shoot.

  (iv) It grows downwards because of gravity.

  (v) The seedling develops its leaves and starts making food.

  (vi) More leaves will develop as the plant grows.

  (vii) The seed leaves now no longer needed, wither, die and fall off.

  Now, select the correct option from the codes given below to put the events in a correct order.
  A)
  (i)\[\to \]-(iii)\[\to \](ii)\[\to \](iv)\[\to \](v)\[\to \](vii)\[\to \](vi) done clear
  B)
  (i)\[\to \](iii)\[\to \](v) \[\to \] (iv)\[\to \](ii)\[\to \](vii)\[\to \] (vi) done clear
  C)
   (i) \[\to \](iv)\[\to \](iii) (v)\[\to \](ii)\[\to \](vii)\[\to \](vi) done clear
  D)
   (i)\[\to \](iv)\[\to \] (iii) (ii)\[\to \](v)\[\to \](vii)\[\to \](vi) done clear
  View Solution play_arrow

• question_answer4)
  Which of the following characteristics 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)
  (i) and (ii) only done clear
  B)
  (iii) and (iv) only done clear
  C)
   (ii) and (iii) only done clear
  D)
   (i) and (iv) only done clear
  View Solution play_arrow

• question_answer5)

  Refer to the given figure.

  Bees that collect nectar from the flower help carry X to other places. Which part of the flower should the bees touch to collect X?

     
  A)
  P                                  done clear
  B)
  Q                     done clear
  C)
  R                     done clear
  D)
  S                                 done clear
  View Solution play_arrow

• question_answer6)
  Select the plants which are pollinated by water.

  (i) Vallisneria	(ii) Zostera
  (iii) Wheat	(iv) Coconut
  (v) Sunflower	(vi) Rafflesia

  A)
  (i), (ii), (iii) and (iv) only                done clear
  B)
  (i) and (ii) only              done clear
  C)
   (i), (ii), (iv) and (iv) only               done clear
  D)
   (iii) and (vi) only                      done clear
  View Solution play_arrow

• question_answer7)
  Refer to the given figure. Which of the labelled parts is the egg cell?              
  A)
  P                                  done clear
  B)
  Q                  done clear
  C)
                      R                  done clear
  D)
          S                   done clear
  View Solution play_arrow

• question_answer8)
  Study the given table and select the correct option.                                  

  Methods of reproduction	Examples
  Budding	P
  Spore formation	Q
  Fragmentation	R
  Vegetative propagation	S

  A)

  P	Q	R	S
  Dahlia	Spirogyra	Rhizopus	Begonia

                  done clear
  B)

  P	Q	R	S
  Yeast	Rhizopus	Spirogyra	Begonia

                  done clear
  C)

  P	Q	R	S
  Spirogyra	Rhizopus	Begonia	Dahlia

                  done clear
  D)

  P	Q	R	S
  Dahlia	Yeast	Spirogyra	Rhizopus

               done clear
  View Solution play_arrow

• question_answer9)
                    Anushka bagged four different kinds of flowers on the potted plants as shown below and left them undisturbed. Which of these four flowers is most likely to produce fruits and seeds?                     
  A)
                       done clear
  B)
          done clear
  C)
           done clear
  D)
           done clear
  View Solution play_arrow

• question_answer10)
  Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.

  (i) Ovary ripens to form seed and ovule ripens to form fruit after fertilisation.

  (ii) Seed dispersed through water usually develop floating ability in the form of spongy or fibrous outer coat as in coconut.

  (iii) Pollination occurs before fertilisation.

  (iv) Cutting, layering, grafting and tissue culture are the natural methods of vegetative propagation.

  A)

  (i)	(ii)	(iii)	(iv)
  F	F	T	F

    done clear
  B)

  (i)	(ii)	(iii)	(iv)
  F	T	T	F

    done clear
  C)

  (i)	(ii)	(iii)	(iv)
  T	T	T	F

    done clear
  D)

  (i)	(ii)	(iii)	(iv)
  F	T	T	T

    done clear
  View Solution play_arrow

• question_answer11)
  The given table lists some plants and their reproductive structures.

  Plants	Reproductive structures
  Bean plant X Onion	Seeds Spores

  What should be at X and Y?
  A)
  X - Fern, Y - Spores done clear
  B)
  X - Pineapple, Y ? Corms done clear
  C)
   X - Moss, Y ? Bulbs done clear
  D)
   X - Moss, Y ? Leaves done clear
  View Solution play_arrow

• question_answer12)
  Read the given passage.

  The flowers of X plant contain either stamen or pistil while flowers of plant Y contain both stamens as well as pistil.

  Select the correct statement regarding X and Y.

  A)
  In X, seed setting is assured even in the absence of pollinating agent. done clear
  B)
  X could be mustard while Y could be papaya. done clear
  C)
  In normal conditions, all the plants of V changes into seeds after fertilization. done clear
  D)
  The flowers of X prevents cross pollination. done clear
  View Solution play_arrow

• question_answer13)
  Refer to the given flow chart and select the option which correctly identifies X, Y and Z.                            
  A)

  X	Y	Z
  Moss	Bryophyllum	Maize

              done clear
  B)

  X	Y	Z
  Moss	Pineapple	Begonia

              done clear
  C)

  X	Y	Z
  Bryophyllum	Begonia	Moss

              done clear
  D)

  X	Y	Z
  Moss	Papaya	Pineapple

              done clear
  View Solution play_arrow

• question_answer14)
    Read the given statements (i-iv) with one or two blanks and select the option that correctly fills any two of the statements.

  (i) In grafting, a cutting having buds from one plant called the ____ is kept over the stem with roots of another plant called the ____.

  (ii) Unorganized mass of the cells in the tissue culture is called___.

  (iii) The shoot forming part of embryo is called ___ while the root forming part of embryo is called__.

  (iv) The process of fusion of male gamete with female gamete to form a zygote is called__.

   
  A)
  (i) Scion, Stock; (iv) Pollination      done clear
  B)
  (ii) Callus; (iii) Plumule, Radicle done clear
  C)
  (ii) Explant; (iii) Radicle, Plumule    done clear
  D)
  (i) Stock, Scion; (ii) Reproduction    done clear
  View Solution play_arrow

• question_answer15)
  Study the given diagrams showing the cross-section of two flowers. Which of the following statements is/are incorrect regarding them?

  (i) These plants have developed from seeds.

  (ii) Flower X is a female flower and flower Y is a bisexual flower.

  (iii) Fertilization can take place in both flowers.

  A)
  (i) only           done clear
  B)
  (ii) only done clear
  C)
   (i) and (iii) only done clear
  D)
   (ii) and (iii) only done clear
  View Solution play_arrow

• question_answer16)
  Refer to the given dichotomous key and select the correct statement.

  (i) (a) Single parent is involved - Go to (ii)

  (b) Two parents are involved - Go to (v)

  (ii) (a) New plants are produced by natural method - Go to (iii)

  (b) New plants are produced by artificial method - Go to (iv)

  (iii) (a) Plant produced through stem – P

  (b) Plant produced through root – Q

  (iv) (a) Plant produced from unorganized cell mass – R

  (b) Plant produced by bending young branch towards the ground and covered with moist soil – S

  (v) (a) Plant produced when pollen grains are transferred to the stigma of same flower of the same plant – T

  (b) Plant produced on transferring pollen grains to the stigma of different flower - U

   
  A)
  P could be sweet potato while S could be Asparagus. done clear
  B)
  R could be Asparagus which grows in suitable nutrient medium. done clear
  C)
  T could be papaya while U could be Hibiscus. done clear
  D)
  Q could be potato which possesses scars or depressions called eyes. done clear
  View Solution play_arrow

• question_answer17)
  Ruchi collected four different kinds of seeds (W, X, Y and Z). The characteristic of each seed is given below. Identify the seeds and the agent of their dispersal and select the correct option.

  W  Surrounded by tiny hair

  X  Thick coat of fibres

  Y  Presence of hooks or spines

  Z  Enclosed in a fruit that bursts open when mature

   
  A)

  Seed	Agent of dispersal
  W - Dandelion	Water

                  done clear
  B)

  Seed	Agent of dispersal
  X - Coconut	Explosion

                  done clear
  C)

  Seed	Agent of dispersal
  Y - Xanthium	Air

                  done clear
  D)

  Seed	Agent of dispersal
  Z - Cotton	Explosion

    done clear
  View Solution play_arrow

• question_answer18)

  Refer to the given figure showing three parent species, X, Y and Z (in plot I) and their respective seedlings after dispersal (in plot II).

  Select the incorrect statement regarding species X, Y and Z.                          

  (i) X could be pea plant in which fruits burst open forcibly after drying.

  (ii) Y could be Xanthium in which seeds are hooked i.e., have spines.

  (iii) Z could be Acer in which fruits and seeds have wings or hair like structure.

  (iv) X could be coconut, Y could be lotus and Z could be Calotropis.

   
  A)
  (iii) and (iv) only done clear
  B)
  (i) and (ii) only done clear
  C)
  (iii) only          done clear
  D)
  (iv) only       done clear
  View Solution play_arrow

• question_answer19)
  The following investigation was carried out using flower buds growing on three plants of the same species :                 

  Plant 1 The anthers were carefully removed and the buds left open to the air.

  Plant 2 The anthers were left untouched and a paper bag was tied tightly around each bud.

  Plant 3 The anthers were carefully removed and a paper bag was tied tightly around each bud.

  All flowers were opened normally but only those on plant 1 produced seeds. What can be inferred from it?
  A)
  Only cross-pollination can take place in this plant species. done clear
  B)
  Only wind-pollination can take place in this plant species. done clear
  C)
   Only insect-pollination can take place in this plant species. done clear
  D)
   Both self and cross-pollination can take place in this plant species. done clear
  View Solution play_arrow

• question_answer20)
  Refer to the given figure and select the correct statement(s).      

  (i) The part labelled as P gives rise to fruit.

  (ii) The part labelled as R is responsible for    transfer of female gamete.

  (iii) The part labelled as Q transforms into endosperm,

  (iv) The part labelled as Q is ferns -gamete.

  (v) The part labelled as R carries pollen.

  A)
  (i) only          done clear
  B)
  (i) and (iii) done clear
  C)
   (iii) and (iv) only done clear
  D)
   (ii) and (v) only done clear
  View Solution play_arrow