Biology Test 357

Question 1
4 / -1

In photosynthesis, the light-independent reactions take place at

A
photosystem II

B
stromal matrix

C
thylakoid lumen

D
photosystem I.

Question 2
4 / -1

Assertion : On plotting the length of the organ against time, a linear curve is obtained in arithmetic growth.

Reason : In arithmetic growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures.

A
Assertion and reason both are true and the reason is correct explanation of assertion.

B
Assertion and reason both are true but reason is not correct explanation of assertion.

C
Assertion is true but reason is wrong.

D
Assertion and reason both are wrong.

Question 3
4 / -1

The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for

A
Interaction with the environment and rogessive evolution

B
Reproduction

C
Growth and movement

D
Responsiveness to touch.

Question 4
4 / -1

In kranz anatomy, the bundle sheath cells have

A
thin walls, many intercellular spaces and no chloroplasts

B
thick walls, no intercellular spaces and large number of chloroplasts

C
thin walls, no intercellular spaces and several chloroplasts

D
thick walls, many intercellular spaces and few chloroplasts

Question 5
4 / -1

PGA as the first CO₂ fixation product was discovered in photosynthesis of

A
bryophyte

B
gymnosperm

C
angiosperm

D
alga

Question 6
4 / -1

Read the following four statements, (i), (ii), (Mains 2010)(iii) and (iv) and select the right option having both correct statements.

Statements :

(i) Z scheme of light reaction takes place in presence of PSI only.

(ii) Only PSI is functional in cyclic photophosphorylation.

(iii) Cyclic photophosphorylation results into synthesis of ATP and NADPH₂.

(iv) Stroma lamellae lack PSII as well as NADP.

A
(ii) and (iv)

B
(i) and (ii)

C
(ii) and (iii)

D
(iii) and (iv)

Question 7
4 / -1

Kranz anatomy is one of the characteristics of the leaves of

A
potato

B
wheat

C
sugarcane

D
mustard

Question 8
4 / -1

Stroma in the chloroplasts of higher plant contains

A
light-dependent reaction enzymes

B
ribosomes

C
chlorophyll

D
light-independent reaction enzymes

Question 9
4 / -1

The C₄ plants are photosynthetically more efficient than C₃ plants because

A
the CO₂ efflux is not prevented

B
they have more chloroplasts

C
the CO₂ compensation point is more

D
CO₂ generated during photorespiration is trapped and recycled through PEP carboxylase

Question 10
4 / -1

In the leaves of C₄ plants, malic acid formation during CO₂ fixation occurs in the cells of

A
bundle sheath

B
phloem

C
epidermis

D
mesophyll

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Biology Test 35...

Question 1

photosystem II

stromal matrix

thylakoid lumen

photosystem I.

Question 2

Assertion and reason both are true and the reason is correct explanation of assertion.

Assertion and reason both are true but reason is not correct explanation of assertion.

Assertion is true but reason is wrong.

Assertion and reason both are wrong.

Question 3

Interaction with the environment and rogessive evolution

Reproduction

Growth and movement

Responsiveness to touch.

Question 4

thin walls, many intercellular spaces and no chloroplasts

thick walls, no intercellular spaces and large number of chloroplasts

thin walls, no intercellular spaces and several chloroplasts

thick walls, many intercellular spaces and few chloroplasts

Question 5

bryophyte

gymnosperm

angiosperm

alga

Question 6

(ii) and (iv)

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

Question 7

potato

wheat

sugarcane

mustard

Question 8

light-dependent reaction enzymes

ribosomes

chlorophyll

light-independent reaction enzymes

Question 9

the CO2 efflux is not prevented

they have more chloroplasts

the CO2 compensation point is more

CO2 generated during photorespiration is trapped and recycled through PEP carboxylase

Question 10

bundle sheath

phloem

epidermis

mesophyll

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Question Analysis

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the CO₂ efflux is not prevented

the CO₂ compensation point is more

CO₂ generated during photorespiration is trapped and recycled through PEP carboxylase