set 5 MCQ Questions & Answers Detailed Explanation

Question : 1

Two pigment system theory of photosynthesis was proposed by or Concept of evidence for existence of two photosystems in photosynthesis was given by

a) Blackman

b) Emerson

c) Hill

d) Arnon

Question : 2

Study the following statements :

1. Control room of the cell is Nucleus
2. Nucleus was discovered by Robert Brown.
3. Nuclear envelope is absent in bacteria.

a) 1 and 2

b) 1 only

c) 2 only

d) 1, 2 and 3

Question : 3

Which mineral nutrients are called critical element for crops?

a) C, H, O

b) N, S, Mg

c) N, P, K

d) K, Ca, Fe

Question : 4

Consider the following statements :

1. Food prepared by plant is transported to different parts of plant through phloem.
2. Water and minerals in plants are transported through xylem.
3. The cell wall of xylem cell is rich in lignin.

a) 1 and 3

b) 1 and 2

c) 2 and 3

d) 1, 2 and 3

Question : 5

Alternate type of phyllotaxy is found in

a) mustard

b) china rose

c) sunflower

d) all of these

Question : 6

Meristematic tissues are found in

a) both roots and stems

b) only stems of the plants

c) in all growing tips of the plant body

d) only roots of the plants