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

Where are B-cells and T-cells produced in the human body? How do they differ from each other? Mention any two differences.

Which of the following microorganism is used for production of citric acid in industries?

Which of the following pair is correctly matched for the product produced by them?

How is milk converted into curd? Explain the process of curd formation.

Write short notes on the following:

Brewer's yeast

List the advantages of biogas plants in rural areas.

Which of the following region has maximum biodiversity.

Who introduced the term biodiversity?

What are the three levels of biodiversity?

Compare and Contrast the insitu and exsitu conservation.

Why do we find a decrease in biodiversity distribution, if we move from the tropics towards the poles?

Right to Clean Water is a fundamental right, under the Indian Constitution.

With which of the following, the Agenda 21’ of Rio Summit, 1992 is related to?

What are the strategies to be implemented in India to attain total reproductive health?

The following is the illustration of the sequence of ovarian events (a-i) in a human female.

Write the difference between C and H.

What effect can fertilizer runoff have on an aquatic ecosystem?

What is amniocentesis? Why a statutory ban is imposed on this technique?

Amniocentesis, the foetal sex determination test, is banned in our country, Is it necessary? Comment.

The golden age of reptiles was ____________.

Which period was called “Age of fishes”?