211.

Conversion of starch to sugar is essential for

• stomatal opening

• stomatal closing

• stomatal formation

• stomatal growth

Soil erosion can be prevented by

• increasing bird population

• afforestation

• removal of vegetation

• overgrasing

Natural sources of air pollution are

• forest fires

• volcanic eruptions

• dust storm

• smoke from burning dry leaves

Which of the following Genetically Modified vegetable is recently being made available in Indian Market?

• Carrot

• Radish

• Brinjal

• Potato

Vermicomposting is done by

• fungus

• bacteria

• worms

• animals

If waste materials contaminate the source of drinking water, which of the following diseases will spread?

• Scurvy

• Typhoid

• Malaria

• Anaemia

Which vein brings clean blood from the lungs into the heart?

• Renal Vein

• Pulmonary Vein

• Vena Cava

• Hepatic Vein

Kelp is

• sulphide mineral of iron

• partially decomposed vegetation

• sea weed rich in iodine content

• an aluminium silicate mineral

Name the branch of zoology that deals with the scientific study of animal behaviour.

• Ecology

• Physiology

• Ethology

• Anatomy

'Barr body' is found in

• sperm

• sertoli cells

• female somatic cells

• male somatic cells