Biology MCQs

Question 1

Salts and sugars works to preserve foods by creating a

Accepted Answer

Hypertonic environment

Answer

Lower pH

Answer

Depletion of nutrients

Answer

Lower osmotic pressure

Question 2

Movement of cell against concentration gradient is called

Accepted Answer

Active transport

Answer

Diffusion

Answer

Osmosis

Answer

Passive transport

Question 3

Which one among the following Indian scientist proposed a theory for long distance transport of water in plants?

Accepted Answer

N.S. Parihar

Answer

J.C. Bose

Answer

Birbal Sahni

Answer

P. Maheshwari

Question 4

The movement of materials across the cell membrane with the help of biological energy provided by ATP is called

Accepted Answer

Active Transport

Answer

Passive Transport

Answer

Endocytosis

Answer

Fractionation

Question 5

Which process requires no energy from the cell?

Accepted Answer

Both A & B

Answer

Osmosis

Answer

Diffusion

Answer

None of the above

Question 6

Oxygen crosses a plasma membrane by

Accepted Answer

Diffusion

Answer

Osmosis

Answer

Evaporation

Answer

Concatenation

Question 7

Which of the following is true of osmosis?

Accepted Answer

It is a type of diffusion

Answer

Movement is against water's concentration gradient

Answer

Requires energy

Answer

All of the above

Question 8

The water readily available to plants for absorption by roots is

Accepted Answer

Capillary water

Answer

Gravitational water

Answer

Rain water

Answer

Hygroscopic water

Question 9

The process of evaporation occurs from

Accepted Answer

Leaf

Answer

Root

Answer

Stem

Answer

Entire 'plants' surface