CBSE Class 8 Science Biology Assignment Set A

CBSE Class 8 Science - Biology

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Q A Fill in the blanks using suitable words.

1 ______ is a structural and functional unit of life.

2 Amoeba is a ________ organism.

3 _________ is a smallest cell.

4 _________ is a central yellow mass of a cell.

5 _________ is said to be a power house of a cell.

Q B Answer the following questions in brief:

1 Which branch of biology deals with microorganism?

2 Name the bacteria that help in converting milk to curd.

3 What do you mean by Bioaugmentation?

4 Name any one biological nitrogen fixer.

Q C Give scientific reasons for the following:

1 Virus is said to be a connecting link between living being and non living

things.

2 Afforestation helps to overcome flood.

3 Overgrazing and deforestation contribute towards soil infertility.

Q D Answer the following questions in detail with the help of diagram.

1 Differentiate between plant cell and animal cell giving four points.

Draw a well labeled diagram of a Plant cell.

 

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