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
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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