Photosynthesis Test

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Photosynthesis Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is the major pigment responsible for trapping light for photosynthesis?

A
Chlorophyll b

B
Xanthophylls

C
Chlorophyll a

D
Carotenoid

Solution

Chlorophyll a is the major pigment responsible for trapping light for photosynthesis.
Question 2
1 / -0

Which of the following is not included in light reactions or in the 'photochemical' phase?

A
Water splitting

B
Formation of high-energy NADPH

C
Light absorption

D
Release of ATP

Solution

This is the correct option as release of ATP is not included in light reactions.
Question 3
1 / -0

In which of the following parts of a cell is ATP synthesised?

a. Ribosome
b. Mitochondria
c. Chloroplast
d. Nucleus

A
Only a and b

B
Only a and c

C
Only a and d

D
Only b and c

Solution

This is the correct option. ATP is synthesised by the cell in mitochondria and chloroplast.
Question 4
1 / -0

In photosynthesis, the proton accumulation is in the

A
lumen

B
ribosome

C
mitochondria

D
vacuole

Solution

In photosynthesis, the proton accumulation is in the lumen.
Question 5
1 / -0

Which of the following products of light reaction is/are used to drive the processes leading to the synthesis of sugars?

a. Oxygen
b. ATP
c. NADPH

A
Only a

B
Only a and b

C
Only b

D
Only b and c

Solution

This is the correct option. ATP and NADPH are used to drive the processes leading to the synthesis of sugars.

Question 6

1 / -0

Match the following:

a. Carboxylation phase	1. During this phase, carbohydrate is formed at the expense of the photochemically made ATP and NADPH.
b. Reduction phase	2. During this phase, CO₂ combines with ribulose-1,5-bisphosphate.
c. Regeneration phase	3. During this phase, the CO₂ acceptor ribulose-1,5-bisphosphate is formed again, so that the cycle continues.

a - 3, b - 1, c - 2

a - 2, b - 1, c - 3

a - 1, b - 2, c - 3

a - 3, b - 2, c - 1

Solution

During carboxylation phase, CO₂ combines with ribulose-1,5-bisphosphate. During reduction phase, carbohydrate is formed at the expense of the photochemically made ATP and NADPH. During regeneration phase, the CO₂ acceptor ribulose-1,5-bisphosphate is formed again, so that the cycle continues.

Question 7
1 / -0

Which of the following is not a characteristic of C4 plants?

A
C4 plants show a response to high light intensities.

B
C4 plants lack a process called photorespiration.

C
C4 plants have a special type of leaf anatomy.

D
C4 plants cannot tolerate higher temperatures.

Solution

This is the correct option as this is not a characteristic of C4 plants. They can tolerate higher temperatures.
Question 8
1 / -0

All of the following are internal factors that affect photosynthesis, except

A
orientation of leaves

B
mesophyll cells and chloroplast

C
amount of chlorophyll

D
carbon dioxide concentration

Solution

This is the correct option as carbon dioxide concentration is not an internal factor that affects photosynthesis. It is an external factor.
Question 9
1 / -0

Which of the following statements is/are false?

a. In carbon fixation cycle, carbon dioxide is added by ATPase enzyme to a 5-carbon compound RuBP.
b. Light harvesting complexes are made up of hundreds of pigment molecules bound to proteins.
c. The enzyme NADP reductase is located on the stroma side of the membrane.

A
Only a

B
Only a and b

C
Only b

D
Only b and c

Solution

Carbon fixation is the process by which inorganic carbon is added to an organic molecule. Carbon fixation occurs during the light independent reaction of photosynthesis and is the first step in the C3 or Calvin Cycle. The key enzyme of the cycle is called RuBisCO.It is a carboxylase/oxygenase enzyme.
Question 10
1 / -0

The large cells around the vascular bundles of the C₄ pathway plants are called bundle sheath cells. Which of the following is/are not characteristic(s) of bundle sheath cells?

a. No intercellular spaces
b. Thick walls impervious to gaseous exchange
c. Very less number of chloroplasts

A
Only a

B
Only a and b

C
Only b

D
Only c

Solution

This is the correct option as this is not a characteristic of bundle sheath cells. They have large number of chloroplasts.

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Photosynthesis Test - 6

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Photosynthesis Test - 6

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SHARING IS CARING

Question 1

Chlorophyll b

Xanthophylls

Chlorophyll a

Carotenoid

Solution

Question 2

Water splitting

Formation of high-energy NADPH

Light absorption

Release of ATP

Solution

Question 3

Only a and b

Only a and c

Only a and d

Only b and c

Solution

Question 4

lumen

ribosome

mitochondria

vacuole

Solution

Question 5

Only a

Only a and b

Only b

Only b and c

Solution

Question 6

a - 3, b - 1, c - 2

a - 2, b - 1, c - 3

a - 1, b - 2, c - 3

a - 3, b - 2, c - 1

Solution

Question 7

C4 plants show a response to high light intensities.

C4 plants lack a process called photorespiration.

C4 plants have a special type of leaf anatomy.

C4 plants cannot tolerate higher temperatures.

Solution

Question 8

orientation of leaves

mesophyll cells and chloroplast

amount of chlorophyll

carbon dioxide concentration

Solution

Question 9

Only a

Only a and b

Only b

Only b and c

Solution

Question 10

Only a

Only a and b

Only b

Only c

Solution

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