Biological catalysts in living organisms are known as

• hormones

• vitamins

• steroids

• enzymes

Which among the following is not a true fruit?

• Apple

• Date

• Grape

• Plum

Food wrapped in newspaper is likely to get contaminated with

• lead

• aluminium

• iron

• magnesium

Among the following elements, which one is essential for the transmission of impulses in the nerve fiber?

• Calcium

• Iron

• Sodium

• Zinc

To which one of the following types of organisms do mushrooms belong?

• Algae

• Ferns

• Fungi

• Lichens

Which one among the following produces seeds but not flowers?

• Cashew nut

• Coffee

• Groundnut

• Pine

The cure to spinal injury is likely to emerge from

• gene therapy

• steam cell therapy

• xenograft

• transfusion

A man with dark skin, in comparison with a man with white skin, will experience

• less heat and less cold.

• less heat and more cold

• more heat and less cold.

• more heat and more cold.

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

• J.C. Bose

• Birbal Sahrii

• P. Maheshwari

• N.S. Parihar

Which one among the following statements regarding cell is not correct?

• Shape and size of cells are related to specific function

• Some cells have changing shapes

• Each cell has its own capacity to perform

• Same type of cells are present in all body tissues