HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Zoology

Mention any two ways in which single nucleotide polymorphism (SNPs) identified in human genome can bring revolutionary change in biological and medical science.

Differentiate between

Primary and secondary immune responses

Autoimmunity is a misdirected immune response. Justify.

The purpose of biological treatment of waste water is to ______.

All populations in a given physical area are defined as ________.

Give the diagnostic characters features of a Biome?

Classify the aquatic biomes of Earth.

Differentiate between Tundra and Taiga Biomes.

List the adaptations seen in terrestrial animals.

Alien species invasion is a threat to endemic species - substantiate this statement.

Mention the major threats to biodiversity caused by human activities. Explain.

In north eastern states, the jhum cultivation is a major threat to biodiversity - substantiate the statement.

Haemophilia is more common in males because it is a ____________.

Father of a child is colourblind and mother is carrier for colourblindness, the probability of the child being colourblind is ____________.

A marriage between a colourblind man and a normal woman produces ____________.

What is criss-cross inheritance?

Why are sex linked recessive characters more common in the male human beings?

What are holandric genes?

Explain the inheritance of sex-linked characters in human being.

Write short notes on the following:

Ideonella sakaiensis