Q.5 Which group of algae can provide nitrogenous nutrients to paddy cultivation under natural field conditions ?

A) Blue-Green Algae

B) Brown Algae

C) Green Algae

D) Red Algae

Ans. A

Q.6 Tissue culture technique can be used for :

1) developing virus free plants

2) Multiplication of elite genotypes of useful trees

3) production of secondary metabolites of plants

Codes :

A) 1 & 3

B) 2 & 3

C) 1 b& 2

D) 1,2,3

Ans. D

Q.7 What is the naturally occurring form of Vitamin D in the human skin ?

A) 1, 25 dihydroxy cholecalciferol

B)  25 hydroxy cholecalciferol

C) 7 hydrocholesterol

D) Calciferol

Ans. D

Q.8 The chemical substance Taxol is said to have curative value for malignant tumours. It is obtained from :

A) Shoots of taxodium sp.

B) Roots & fruits of Taxodium sp.

C) bark from stem of Taxus sp.

D) roots of taxus sp.

Ans. C

Q.9 Spirogyra is classified into which of the following class ?

A) Algae

B) Fungi

C) Bacteria

D) None of the above

Ans. A

Q.10 Which among the following are present in Plant Cell but not in the Animal cell ?

1) Cell wall

2) Cell membrane

3) Plastids

Codes:

A) 1 & 3

B) 2 & 3

C) 1 & 2

D) 1,2,3

Ans. D

Q.11 Which among the following are the decomposers ?

1) Algae

2) Fungi

3) Bacteria

Codes :

A) 1 & 3

B) 2 & 3

C) 1 & 2

D) 1,2,3

Ans. B