Prelims

“Athlete’s Foot” is a disease caused by

Consider the following statements : I. Tapeworm is a hermaphrodite. II. Round-worm has separate sexes. III. Filaria is caused by a nematode. IV. Guinea-worm is an annelid. Which of these are correct ?

Which of the following features of DNA makes in uniquely suited to store and transmit genetic information from generation to generation ?

The American multinational company, Monsanto has produced an insect-resistant cotton variety that is undergoing field- trails in India. A toxin gene from which ONE of the following bacteria has been transferred to this transgenic cotton ?

Antigen is a substance which

Which organelle in the cell, other than nucleus, contains DNA ?

Epiphytes are plants which depend on other plants for

Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules. Reason (R): DNA fragments can be manipulated using restriction endonucleases and DNA ligases.

The cellular and molecular control of programmed cell death is known as

Consider the following statements with reference to the Periodic Table of chemical elements : I. lonisation potential gradually decreases along a period. II. In a group of elements, electron affinity decreases as the atomic weight increases. III. In a given period, electronegativity decreases as the atomic number increases. Which of these statement(s) is/are correct ?