Biology MCQs

Question 1

Rain water helps to increase the ____ to some extent.

Accepted Answer

calcium contents

Answer

phosphorous contents

Answer

nitrogen contents

Answer

potash contents

Question 2

Number of chromosomes in down's syndrome is

Accepted Answer

47

Answer

46

Answer

48

Answer

49

Question 3

Plants are killed in winter by frost

Accepted Answer

because of desiccation and mechanical damage to the tissues

Answer

because no photosynthesis takes place at such low temperature

Answer

because respiration ceases at such low temperature

Answer

because there is no transpiration

Question 4

One of the following is most suitable for study of mutations

Accepted Answer

Haploids

Answer

Diploids

Answer

Tetraploids

Answer

Polyploid

Question 5

Pulses are a good source of

Accepted Answer

proteins

Answer

carbohydrates

Answer

fats

Answer

vitamins

Question 6

Oxygen in our blood is transported by a protein named

Accepted Answer

haemoglobin

Answer

keratin

Answer

collagen

Answer

myoglobin

Question 7

Nymph is the name of young one of

Accepted Answer

cockroach

Answer

butterfly

Answer

beetle

Answer

housefly

Question 8

One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?

Accepted Answer

You are infected by a virus

Answer

Having waited a day, it is too late to take an antibiotic

Answer

You need an antiseptic, not an antibiotic

Answer

You need to be vaccinated instead of taking an antibiotic

Question 9

Plants that grow under average temperature and moisture are called:

Accepted Answer

mesophytes

Answer

halophytes

Answer

hydrophytes

Answer

xerophytes