set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Agar is commercially obtained from

a) brown algae

b) red algae

c) green algae

d) blue-green algae

Question : 2

Homologous organs are

a) gills of fish and lungs of rabbit

b) pectoral fins of fish and fore limbs of horse

c) wings of insects and bat

d) wings of grosshopper and crow

Question : 3

Gene for colour blindness is located on

a) X-chromosome

b) 13th chromosome

c) Y-chromosome

d) 21st chromosome

Question : 4

Leaves of dicotyledonous plants possess ________ venation, while ____________ venation is the characteristic of most monocotyledons.

a) reticulate and perpendicular respectively

b) reticulate and parallel respectively

c) parallel and reticulate respectively

d) obliquely and parallel respectively.

Question : 5

The last chain of food are

a) Parasites

b) Producers

c) Decomposers

d) None of the above

Question : 6

Cymose is

a) inflorescence

b) thalamus

c) fruit

d) ovary