Biology - MOST IMPORTANT UPSC CSE Previous Year Questions

Gregor Johann Mendel

Thomas Hunt Morgan

Barbara McClintock

Watson and Crick

Storing water

Storing fat

Balancing the body during walking in desert sand

Temperature regulation

Electric organs of fishes

Stings of rays

Sebaceous glands of mammals

Salivary glands of vertebrates

Coriander seeds

Mustard seeds

Cumin seeds

Fenugreek seeds

Females and expressed by females

Females and expressed by males

Males and expressed by females

Males and expressed by males

Hybridisation

Genetic engineering

Mutation Breeding

Hormonal feeding

A-$\displaystyle 1$, B-$\displaystyle 3$, C-$\displaystyle 2$, D-$\displaystyle 5$

A-$\displaystyle 2$, B-$\displaystyle 1$, C-$\displaystyle 4$, D-$\displaystyle 5$

A-$\displaystyle 2$, B-$\displaystyle 1$, C-$\displaystyle 3$, D-$\displaystyle 4$

A-$\displaystyle 3$, B-$\displaystyle 1$, C-$\displaystyle 4$, D-$\displaystyle 2$

acutediarrhoea, cancer and gout

Malaria, acute diarrhea and schistosomiasis

onchocerciasis, leukaemia and arthritis

Rheumatism, malaria and AIDS

It removes the outer dust in the skin.

It kills the germs.

It stimulates certain nerves which direct the brain to increase the production of antihistaminic chemicals.

It suppresses the production of enzymes which cause itching.

Mrs. X

Mr. X

Mrs. Y

Mr. Y

Three

Four

Six to seven

Nine to ten

If high rainfall occurs during the period of growth of the plant.

If frost occurs during the period of ripening.

If there is fluctuation in temperature during the period of growth of the plant.

If there is high temperature during the time of ripening.

Two plant families

Three plant families

Four plant families

Five plant families

colour films used by biologists to photograph living organisms.

photomicrographs of microorganisms from various habitats.

accumulations of microorganisms at surfaces such as those of a rock, a tooth or an oil droplet.

photographic films made through fermentation processes of certain industrial microorganisms.

Use of living organisms or substances obtained from them in industrial processes.

Modernizing the commercial industrial to produce products for use in biological research.

Use of modern technology to investigate biological disorders

Use of industrial technology to increase the biosphere

Potato

Sorghum

Sunflower

Pea

in the first week of its development

in the third week of its development

in the fourth week of its development

in the sixth week of its development

B

AB

O

B, AB and O

$\displaystyle 1$, $\displaystyle 2$, $\displaystyle 3$, $\displaystyle 4$

$\displaystyle 2$, $\displaystyle 4$, $\displaystyle 1$, $\displaystyle 3$

$\displaystyle 2$, $\displaystyle 3$, $\displaystyle 1$, $\displaystyle 4$

$\displaystyle 4$, $\displaystyle 2$, $\displaystyle 1$, $\displaystyle 3$

fertilization takes place inside the test tube

development of the baby taken place inside the test tube

fertilization takes place outside the mother's body

unfertilized egg develops inside the test tube