Biology

Q.

Write the ten things that are living and non-living

Q. If wheat is sown in the kharif season, what would happen? Discuss. [2 marks]

Q.

Write a short note on preparation of soil.

Q.

How would you describe a pond ecosystem?

Q. Write a short paragraph on the harms caused microorganism?

Q.

Give ten advantages of cleanliness

Q.

The intersection of a column and row in a spreadsheet is called a bon or

Q.

An abnormal human baby with ‘XXX’ sex chromosomes was born due to-

1. fusion of two sperms and one ovum

2. fusion of two ova and one sperm

3. formation of abnormal ova in the mother

4. formation of abnormal sperms in the father

Q.

How to conserve forest

Q.

Why are mitochondria called the powerhouse of cells?

Q.

What are the uses of the forest?

Q.

Write a paragraph in your own words on each of the following:

(a) Preparation of soil

(b) Sowing

(c) Weeding

(d) Threshing

Q.

What are the factors that determine soil formation?

Q.

What are the main problems of adolescence?

Q.

Write the ten crawling animal names?

Q. Why mitochondria is said to be power house of the cell?

Q.

Difference between mitosis and meiosis.

Q. Explain the structure and functioning of an ecosystem.

Q.

What are meristematic tissues? Explain its types.

Q.

What are the agents of pollination?

Q.

What is irrigation? Describe two methods of irrigation that conserve water.

Q.

What is the difference between sprinkler system and drip irrigation ?

Q.

What are the objectives of the Environment Protection Act, 1986?

Q.

Why is blood group AB is called universal recipient???

three point

Q.

Explain how soil gets affected by the continuous plantation of crops?

Q.

Question 6
Where do the lipids and proteins constituting the cell membrane gets synthesized?

Q.

Why is blood group. O called the universal donor??.

Three points

Q.

Why should we conserve forests and wildlife?

Q.

Explain the structure of chloroplast.

Q.

What is the collective noun of cattle?