Free Printable UNIT III Photosynthesis Retake

1.

Dark reactions of photosynthesis occur in

a)

a) Granal thylakoid membranes

b)

(b) Stromal lamella membranes

c)

(c) Stroma outside photosynthetic lamellae

d)

(d) Periplastidial space

2.

Oxygen containing carotenoids are

a)

(a) Carotenes

b)

(b) Xanthophylls

c)

(c) Anthocyanins

d)

(d) Phycobilins

3.

Which of the following plant shows chloroplast dimorphism?

a)

(a) Wheat

b)

(b) Rice

c)

(c) Sugar beet

d)

(d) Sugarcane

4.

First product of photorespiration is

a)

(a) Phosphoglycolate

b)

(b) Glycolate

c)

(c) Glycerine

d)

(d) None of these

5.

Core metal of chlorophyll is

a)

(a) Cu

b)

(b) Mg

c)

(c) Fe

d)

(d) Ni

6.

Chlorophylls absorb visible light of wavelengths

a)

(a) 400-500 nm only

b)

(b) 300-400 nm only

c)

(c) 600-800 nm only

d)

(d) 400-500 nm and 600-700 nm

7.

Condition favouring cyclic photophosphorylation is

a)

(a) Anaerobic environment

b)

(b) Aerobic and low light intensity

c)

(c) Aerobic and optimum light

d)

(d) Anaerobic and low light intensity

8.

What is true for photosynthesis ?

a)

(a) Both carbon dioxide and water are oxidised

b)

(b) Both carbon dioxide and water are reduced

c)

(c) Carbon dioxide is oxidised and water reduced

d)

(d) Carbon dioxide is reduced and water oxidised

9.

Which element is required photosynthetic evolution of oxygen ?

a)

a) Cu

b)

(b) Fe

c)

(c) Zn

d)

(d) Mn

10.

Special feature of C4 plants is

a)

(a) Thin cuticle

b)

(b) Multilayered epidermis

c)

(c) Kranz anatomy

d)

(d) Both (a) and (b)

11.

In C4 plants synthesis of sugars/final CO2 fixation occurs in

a)

(a) Undifferentiated mesophyll cells

b)

(b) Bundle sheath cells

c)

(c) Epidermal cells

d)

(d) Spongy cells

12.

The law of limiting factors for photosynthesis was enunciated by

a)

(a) R. Hill

b)

(b) Calvin

c)

(c) Krebs

d)

(d) Blackman

13.

When a photon of light energy reaches a reaction center chlorophyll molecule, what becomes excited?

a)

(a) a molecule of water vapor

b)

(b) an electron

c)

(c) a carbon dioxide molecule

d)

(d)an atom of oxygen

14.

The enzyme responsible for carbon fixation in C4 Photosynthesis is

a)

RuBisCo

b)

PEP Carboxylase

c)

Hexokinase

d)

Pyruvate DeHydrogenase

15.

In CAM Photosynthesis CO₂ is stored as:

a)

Malate

b)

RuBP

c)

Pyruvate

d)

G3P

UNIT III Photosynthesis Retake

Total questions: 15

Worksheet time: 8mins

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