Biology MCQs

Question 1

The basic unit of the nervous system is the

Accepted Answer

Neurons

Answer

Lymphs

Answer

Nephrons

Answer

Nerves

Question 2

The weight of the brain in the total weight of the body is about

Accepted Answer

2%

Answer

3%

Answer

4%

Answer

5%

Question 3

Cerebrum is located in which part of brain?

Accepted Answer

Fore front

Answer

Lower side

Answer

Extension of brain

Answer

None of these

Question 4

The smallest structural and functional unit of nervous system is

Accepted Answer

Neuron

Answer

Centron

Answer

Dendron

Answer

Axon

Question 5

Which one of the following parts of human brain is the regulating centre for swallowing and vomiting?

Accepted Answer

Medulla oblongata

Answer

Cerebellum

Answer

Cerebrum

Answer

Cortex

Question 6

Compared to land, the open oceans

Accepted Answer

Are nutrient-poor environments

Answer

Are rich in silica and iron

Answer

Contain unlimited nitrogen

Answer

Are nutrient-rich environments

Question 7

Study of effect of radiation on plant and animal is

Accepted Answer

Radiobiology

Answer

Pathology

Answer

Etiology

Answer

Cosmology

Question 8

Melvin calvin got Noble Prize for his studies on

Accepted Answer

Carbon fixation

Answer

Light reaction

Answer

Plant hormones

Answer

Photons

Question 9

Kyoto Protocol is associated with

Accepted Answer

Climate change

Answer

Species conservation

Answer

Wetland Conservation

Answer

Medicinal plants