Cell A and cell B are adjacent plant cells. In cell A, \[{{\psi }_{s}}=-20\] bars and \[{{\psi }_{p}}=8\] bars. In cell\[{{\psi }_{s}}=-12\]bars and \[{{\psi }_{p}}=2\] bars. Then,
A)
Water moves from cell A to cell B
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B)
There is no movement of water between cell A and cell B
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C)
Water moves from cell B to cell A
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D)
Equal amount of water is simultaneously exchanged between cell A and cell B.
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Arrange the steps of catalytic action of an enzyme in right order and select the correct option. (i) The enzyme releases the products of the reaction and the enzyme is free to bind to another substrate. (ii) The active site of enzyme is in close proximity of the substrate and breaks the chemical bonds of the substrate. (iii) The binding of substrate induces the enzyme to alter its shape fitting more tightly around the substrate. (iv) The substrate binds to the active site of the enzyme fitting into the active site.
A)
(iv), (iii), (ii), (i)
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B)
(iii), (ii), (i), (iv)
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C)
(iv), (ii), (i), (iii)
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D)
(ii), (i), (iv), (iii)
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Which of the following is an incorrect match?
A)
Family Floral diagram Liliaceae
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B)
Family Floral diagram Asteraceae
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C)
Family Floral diagram Solanaceae
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D)
Family Floral diagram Fabaceae
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How many carbon atoms are there in substances labelled as P, Q, R and S respectively in the given representation of Krebs' cycle? Krebs-cycle
A)
P-4 Q-3 R-6 S-4
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B)
P-3 Q-4 R-4 S-6
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C)
P-4 Q-3 R-4 S-6
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D)
P-3 Q-4 R-6 S-4
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Select the correct statements among the following (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebactria which produce methane in marshy areas. (ii) Nostoc is a filamentous blue ?green alga which fixes atmospheric nitrogen. (iii) Mycoplasma lack a cell wall and can survive without oxgen
A)
(ii) and (iii)
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B)
(i) and (ii)
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C)
(ii), (iii) and (iv)
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D)
(i), (ii) and (iv)
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The diagram below shows two germinating corn seeds that have been placed in identical bottles and kept in dark. Bottle A will be rotated 90 degrees each day for the next 6 days. Bottle B will not be rotated.
Which hypothesis is most likely being tested in this experiment?
A)
The amount of light received affects chlorophyll production.
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B)
Water is needed for proper plant growth.
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C)
Gravity affects plant growth.
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D)
Enzymes promote seed development.
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Observe the classification table given below. Fill in the boxes (i), (ii), (iii) and (iv) with appropriate words and select the correct option.
A)
(i) (ii) (iii) (iv) Ascomy-cetes Basidiom-ycetes Zygomycetes Deutermycetes
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B)
(i) (ii) (iii) (iv) Zygomcetes Oomycet-es Basidiomy-cetes Ascomycetes
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C)
(i) (ii) (iii) (iv) Deuterom-ycetes Zygomcet-es Ascomycetes Basidiomy-cetes
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D)
(i) (ii) (iii) (iv) Zygom-ycetes Basidiom-ycetes Ascomycetes Deuteromy-cetes
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Identify the types of vascular bundles given in the figures (i) and (ii), and select the correct option.
A)
(i) (ii) Conjoint collateral Conjoint biconllateral
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B)
(i) (ii) Conjoint bicollateral Conjoint collateral
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C)
(i) (ii) Conjoint collateral closed Conjoint collateral open
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D)
(i) (ii) Conjoint collateral open Conjoint collateral closed
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Refer to the given diagram showing cell cycle and select the correct answers for the questions that follow.
(i) If the chromosome number at X is 2n, what will be the number of chromosomes at Y? (ii) Which phase is the longest phase of M phase?
A)
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B)
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C)
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D)
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Read the given statements and select the correct option. Statement 1: Chloroplasts and mitochondria are semi-autonomous bodies. Statement 2: Chloroplasts and mitochondria have their own DNA and protein synthesizing machinery.
A)
Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
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B)
Both statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
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C)
Statement 1 is correct and statement 2 is incorrect.
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D)
Both statements 1 and 2 are incorrect.
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What is the function of ATP in skeletal muscle contraction?
A)
Hydrolysis of ATP by myosin energizes the cross-bridges, providing the energy for force generation.
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B)
Binding of ATP to myosin dissociates cross-bridges bound to actin, allowing the bridges to repeat their cycle of activity.
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C)
Hydrolysis of ATP by the \[C{{a}^{2+}}\]-ATPase in the sarcoplasmic reticulum provides the energy for the active transport of \[C{{a}^{2+}}\] into the reticulum, lowering cytosolic \[C{{a}^{2+}}\] to pre-release levels, ending the contraction and allowing the muscle fiber to relax.
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D)
All of the above.
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Select the incorrect option regarding the given figure.
A)
Q is parietal lobe which registers sensory perceptions.
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B)
P is occipital lobe which decodes and interprets visual information.
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C)
R is temporal lobe which is associated with memory and emotion.
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D)
S is cerebellum which controls muscular activities.
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Direction: Refer the given graph and select the correct options.
Which of these is correct regarding D, E and F areas in the graph?
A)
D shows venous blood during exercise
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B)
E shows normal venous blood
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C)
F shows normal arterial blood
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D)
All of these
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Direction: Refer the given graph and select the correct options.
How much oxygen will be released to the tissues by blood on passing from lungs to tissues?
A)
15 mL of \[{{O}_{2}}/100\]mL of blood
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B)
70 mL of \[{{O}_{2}}/100\] mL of blood
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C)
5 mL of \[{{O}_{2}}/100\] mL of blood
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D)
20 mL of \[{{O}_{2}}/100\] mL of blood
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Which of the following animals shows the given type of heart and circulation?
A)
Periplaneta
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B)
Hemidactylus
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C)
Ornithorhynchus
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D)
Scoliodon
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Which one is correct regarding electrocardiogram (ECG)?
A)
P-wave represents the electrical excitation of the ventricles.
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B)
QRS complex represents repolarisation of the ventricles.
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C)
T-wave represents repolarisation of the atria.
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D)
By counting the time between two QRS complexes one can determine the pulse rate.
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In the given Venn diagram where would you place Ornithorhynchus and Struthio?
A)
Ornithorhynchus-Y, Struthio-Z
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B)
Ornithorhynchus-Y, Struthio-W
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C)
Ornithorhynchus-X, Struthio-Z
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D)
Ornithorhynchus-W, Struthio-Y
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In the given figure of a joint, which part secretes a fluid and which part nourishes the structures of joint, respectively?
A)
P and Q
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B)
Q and R
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C)
Q and S
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D)
R and S
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The given figure shows main endocrine glands in human body. Identify X, Y and Z and select the correct option.
A)
Y is the largest endocrine gland which secretes thyroxine and triido-thyronine hormones.
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B)
Gland Z is found in pair and works in coordination with sympathetic nervous system.
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C)
Gland X is located between the cerebral hemispheres and secretes MSH which maintains biologicsssal clock.
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D)
All of these.
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Which of the following labelled parts in the given figure is/are involved in the pH and ionic balance of the body fluids?
A)
P and
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B)
P, Q and S
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C)
Q only
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D)
P, R and S
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