1.

Mention two advantages for preferring CNG over diesel as an automobile fuel.

What are transgenic animals? Given an example

Write the probable differences in eating habits of Homo habilis and Homo erectus.

Mention the role of 'genetic mother' in MOET.

A male honeybee has 16 chromosomes whereas its female has 32 chromosomes. Give one reason.

Name a free-living and a symbiotic bacterium that serve as bio-fertilizer. Why are they called so?

Name the calls HIV (Human Immunodeficiency Virus) gains entry into after infecting the human body. Explain the events that occur in these cells.

Explain the relationship between CFCs and Ozone in the stratosphere.

Why are sacred groves highly protected ?

Following are the features of genetic codes. What does each one indicate ? [2]
Stop codon; Unambiguous codon; Degenerate codon; Universal codon.