Photosynthesis in Higher Plants Test

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Photosynthesis in Higher Plants Test - 61

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Question 1
1 / -0

Photorespiration occurs in

A
Mitochondria

B
Chloroplast

C
Peroxisome

D
Cytoplasm

Solution

Photorespiration is the light-dependent process of oxygenation of ribulose biphosphate and release of carbon dioxide by the photosynthetic organs of a plant. It occurs in Chloroplast but mitochondria and peroxisome are required for completing the process.
So, the correct option is 'Chloroplast'.
Question 2
1 / -0

The first $$CO_2$$ acceptor in $$C_4$$ cycle is

A
RUBP

B
PGA

C
OAA

D
PEP

Solution

The first $$CO_2$$ acceptor in $$C_4$$ cycle is phosphoenolpyruvate (PEP) which is a 3-carbon molecule. It is present in mesophyll cells of $$C_4$$ plants. The enzyme that catalyses this $$CO_2$$ fixation is PEP carboxylase or PEPcase. The mesophyll cells of $$C_4$$ plants lack the enzyme RuBisCO. The 4-carbon oxaloacetic acid (OAA) is formed in the mesophyll cells. It is then converted to other 4-carbon compounds like malic acid or aspartic acid in the mesophyll cells itself, these are then transported to the bundle sheath cells. In the bundle sheath cells, these $$C_4$$ acids are broken down to release $$CO_2$$ and a 3-carbon molecule. The $$CO_2$$ released in the bundle sheath cells enters the $$C_3$$ pathway. The 3-carbon molecule is transported back to the mesophyll cells where it is converted to PEP again, thus completing the cycle.
Question 3
1 / -0

If a pure chlorophyll solution is illuminated with ultraviolet light, the solution appears

A
Green.

B
Violet.

C
Red.

D
Black.

Solution

If a pure chlorophyll solution is illuminated with ultraviolet light, the solution appears red. This happens due to the phenomenon called as fluorescence. In this, absorption of a photon causes a transition of the chlorophyll molecule from its ground state to its excited state. Chlorophyll absorbs red and blue light. Hence, when kept under white light, it appears green in colour. However, if chlorophyll solution is illuminated with ultraviolet light, the solution appears red because red colour is absorbed by it. This is the excited state of chlorophyll solution.
Thus, the correct answer is option C.
Question 4
1 / -0

When the separation of photosynthetic pigments is carried out using a strip of chromatographic paper, then the dried strip shows four distinct bands P, Q, R and S as shown in the given figure. Identify them and select the correct option.

A
P-Chl. a, Q-Chl b, R-Carotene, S-Xanthophyll

B
P-Xanthophyll, Q-Carotene, R-Chl. b, S-Chl. a

C
P-Carotene, Q-Xanthophyll, R-Chl. a, S-Chl. b

D
P-Chl. b, Q-Chl. a, R-Xanthophyll, S-Carotene
Question 5
1 / -0

Chlorophyll $$a$$ is found in _________________.

A
All $${O}_{2}$$ releasing photosynthetic forms

B
Only higher plants

C
Higher plants that photosynthesis

D
All photosynthetic eukaryotes
Question 6
1 / -0

If $$8$$ carbon atoms are deviated from the Calvin cycle in photorespiration, then what is the total carbon loss that occurs at the end of the reaction?

A
$$100$$%

B
$$75$$%

C
$$25$$%

D
$$0$$%

Solution

Photorespiration is a process that certain plants undergo and it involves the loss of carbon. It wastes oxygen and results in a loss of carbon in form of CO2 production.
Hence, the correct answer is option A.
Question 7
1 / -0

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to $$CO_{2}$$ and $$H_{2}O$$ yields $$686\ kcal$$ and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is $$12\ kcal$$?

A
Two

B
Thirty

C
Fifty seven

D
One
Question 8
1 / -0

How many ATP molecules could maximally be generated from on molecule of glucose, if the complete oxidation of one mole of glucose to $$C{ O }_{ 2 }$$ and $$H_{ 2 }O$$ yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal ?

A
$$\displaystyle Two$$

B
$$\displaystyle Thirty$$

C
$$\displaystyle Fifty \ seven$$

D
$$\displaystyle One$$
Question 9
1 / -0

Which of the following is coenzyme - II ?

A
NAD

B
NADP

C
FAD

D
None of the above

Solution

Nicotinamide adenine dinucleotide phosphate, abbreviated NADP⁺ or, in older notation, TPN, is a cofactor used in anabolic reactions, such as lipid and nucleic acid synthesis, which require NADPH as a reducing agent. It is the coenzyme - II.
So the correct answer is NADP.
Question 10
1 / -0

Which of the following is not a waste product produced by plants?

A
Water vapour

B
Oxygen

C
Gum Arabic

D
Carbon dioxide

Solution

Water vapor, oxygen, carbon dioxide are produced during respiration and photosynthesis respectively while gum arabic is a natural gum, it is made up of hardened sap of two trees of acacia tree species, hence also called as acacia gum.
So, the correct option is ' Gum Arabic'.

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Re-Attempt Weekly Quiz Competition

Photosynthesis in Higher Plants Test - 61

Result

Photosynthesis in Higher Plants Test - 61

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SHARING IS CARING

Question 1

Mitochondria

Chloroplast

Peroxisome

Cytoplasm

Solution

Question 2

RUBP

PGA

OAA

PEP

Solution

Question 3

Green.

Violet.

Red.

Black.

Solution

Question 4

P-Chl. a, Q-Chl b, R-Carotene, S-Xanthophyll

P-Xanthophyll, Q-Carotene, R-Chl. b, S-Chl. a

P-Carotene, Q-Xanthophyll, R-Chl. a, S-Chl. b

P-Chl. b, Q-Chl. a, R-Xanthophyll, S-Carotene

Question 5

All $${O}_{2}$$ releasing photosynthetic forms

Only higher plants

Higher plants that photosynthesis

All photosynthetic eukaryotes

Question 6

$$100$$%

$$75$$%

$$25$$%

$$0$$%

Solution

Question 7

Two

Thirty

Fifty seven

One

Question 8

$$\displaystyle Two$$

$$\displaystyle Thirty$$

$$\displaystyle Fifty \ seven$$

$$\displaystyle One$$

Question 9

NAD

NADP

FAD

None of the above

Solution

Question 10

Water vapour

Oxygen

Gum Arabic

Carbon dioxide

Solution

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