set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Generally plants absorbed N2 in the form of

a) $NO_3^{-}$

b) N ≡ N

c) $NO_2^{-}$

d) $HNO_2$

Question : 2

Roots develop from parts of the plant other than radicle are called

a) fibrous roots

b) tap roots

c) adventitious roots

d) nodular roots

Question : 3

Which of the following elements is not required by plants for their normal healthy growth?

a) Magnesium

b) Lead

c) Calcium

d) Iron

Question : 4

Consider the following statements:

1. Chlorella is component of sewage oxidation tank.
2. Chlorella produces food rich in vitamins, proteins, etc.
3. Chlorella uses prolonged space flight for food O₂ disposed of CO₂ .
4. Chlorella yields antibiotic chlorellin.

a) 1 and 3

b) 1, 2, 3 and 4

c) 1, 2 and 3

d) 1 and 2

Question : 5

Match List-I with List-II and select the correct answer using the code given below the lists.

a) 3 4 2 1

b) 2 1 3 4

c) 1 3 4 2

d) 4 2 1 3

Question : 6

Chlorophyll is present

a) on the surface of chloroplasts

b) dispersed through out the chloroplasts

c) in the grana of chloroplasts

d) in the stroma of chloroplasts