Biology MCQs

Question 1

Plant bends towards the source of light on account of the movement of curvature known as

Accepted Answer

phototropism

Answer

geotropism

Answer

thigmotropism

Answer

chemotropism

Question 2

Plant have ____ while animals lack it.

Accepted Answer

cellulose

Answer

starch

Answer

protein

Answer

fat

Question 3

Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

Accepted Answer

The flow of solution is not possible through semi permeable membrane

Answer

Exact concentration of solution is not given

Answer

Character of semi permeable membrane is not given

Answer

All are incorrect

Question 4

Photosynthesis is a process

Accepted Answer

reductive, endergonic and anabolic

Answer

reductive and exergonic

Answer

reductive and catabolic

Answer

reductive, endergonic and catabolic

Question 5

On which of the following plants did Gregor Mendal perform his classical experiment?

Accepted Answer

Pea

Answer

Gram

Answer

Maize

Answer

Wheat

Question 6

Pigmentation of skin is due to

Accepted Answer

melanocytes

Answer

lymphocytes

Answer

monocytes

Answer

leucocytes

Question 7

Norepinephrine increases

Accepted Answer

blood pressure

Answer

respiration

Answer

urine production

Answer

saliva production

Question 8

Night blindness is cause by lack of which vitamin?

Accepted Answer

Vitamin A

Answer

Vitamin B

Answer

Vitamin C

Answer

Vitamin D

Question 9

Monocot root differs from dicot root in having

Accepted Answer

well developed pith

Answer

open vascular bundles

Answer

scattered vascular bundles

Answer

radially arranged vascular bundles