set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the following statements :

1. Sickle cell anaemia is a genetic disease common in tropical and sub-tropical countries.
2. Sickle-cell anaemia is due to mutation in β-globulin gene.
3. Due to the sickle-shaped RBCS oxygen carrying capacity of the haemoglobin decreases.

a) 2 and 3

b) 1, 2 and 3

c) 1 only

d) 3 only

Question : 2

Which is not a stem modification ?

a) Pitcher of Nepenthes

b) Rhizome of ginger

c) Corm of Colocasia

d) Tuber of potato

Question : 3

All producers are

a) All autotrophs

b) Food making organisms

c) Make food in the presence of sunlight with chlorophyll

d) All the above

Question : 4

The famous botanical garden ‘Kew’ is located in

a) Berlin

b) England

c) Lucknow

d) Australia

Question : 5

Consider the following statements :

1. Polytene chromosomes found in salivary gland of larva of Drosophila and Chironomus larva.
2. They were Discovered by Balbiani.
3. They were characterized by presence of puffs and Balbiani rings
4. These chromosomes are attached by chromocentre.

a) 2 only

b) 2 and 3

c) 1 and 2

d) 1, 2, 3 and 4

Question : 6

Insects have

a) 4 pairs of legs

b) 2 pairs of legs

c) 3 pairs of legs

d) 1 pair of legs