Biology MCQs

Question 1

Neurospora is used as genetic material because

Accepted Answer

it has short life cycle of 10 days

Answer

the product of single meiosis can be easily analysed

Answer

meiotic products are linearly arranged in the form of ordered tetrads

Answer

is a diploid fungus

Question 2

Phloem is a tissue found in

Accepted Answer

plants

Answer

reproductive organs of animals

Answer

insects

Answer

mammals

Question 3

N2 content is kept constant in the biosphere due to

Accepted Answer

nitrogen cycle

Answer

N2 fixation

Answer

industrial pollution

Answer

absorption of N2

Question 4

Out of proteins, lipids and carbohydrates present in a cell membrane, what is true?

Accepted Answer

Carbohydrates are minimum

Answer

Lipids are maximum

Answer

Carbohydrates are maximum

Answer

All three are in equal proportion

Question 5

Potato is a modified form (outgrowth) of:

Accepted Answer

stem

Answer

root

Answer

fruit

Answer

leaf

Question 6

Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?

Accepted Answer

Class

Answer

Order

Answer

Subspecies

Answer

Genus

Question 7

Prothrombin which helps in clotting of blood is released by

Accepted Answer

blood platelets

Answer

lymphocytes

Answer

erythrocytes

Answer

monocytes

Question 8

Myopia is connected with

Accepted Answer

eyes

Answer

ears

Answer

lungs

Answer

None of these

Question 9

Most of the red, blue and purple colours of plants are due to a pigment called

Accepted Answer

anthocyanin

Answer

carotene

Answer

chlorophyll

Answer

xanthophylls