Cell Structure and Function Class 8 Worksheet with Solved in Pdf
Cell Structure and Function Class 8 Worksheet: In this page we have included Cell Structure and Function Chapter from Grade 8 Worksheet with solution.
Worksheet for chapter 8: – Cell Structure and Function
The following questions are important for your exams for 1 mark 2 mark or 5 marks. First solve the questions on your own and then saw the solution for understanding it better.
Practice worksheet for class 8
A.) Fill in the blanks.
- Organisms made up of more than one cell are called multicellular.
- The change in shape is due to formation of pseudopodia.
- The smallest cell is 0.1 to 0.5 micrometer in bacteria.
- Green colour plastids are called chloroplast.
- An organ is made up of group of tissues.
B.) Answer in one word.
1.) Discovery of cell.
Answer: – Robert Hooke in 1665.
2.) Jelly like substance present in cell membrane and nucleus.
Answer:- Cytoplasm.
3.) Single celled organism.
Answer: – Amoeba.
4.) Largest cell measuring size is
Answer: – 170 mm × 130 mm.
5.) Smallest living part of organism is
Answer: – Cell.
C.) Answer in one sentence.
1.) Define unicellular organisms with example.
Answer: – The single celled organism are called unicellular organisms. Example amoeba.
2.) What is nuclear membrane?
Answer: – Separation of cytoplasm by membrane is called nuclear membrane.
3.) Define prokaryotic cells with example.
Answer: – The cells have nuclear material without nuclear membrane is called prokaryotic cells. Example are blue green algae and bacteria.
4.) Define eukaryotic cells with example.
Answer: – Eukaryotic cells are cell which have nucleus and nuclear membrane. Example are plants, animals, fungi etc .
D.) Explain why there is change in shape of cells.
Answer:- The change in shape of cells is because of formation of pseudopodia which facilitates movement and help in capturing the food.
E.) Explain cytoplasm.
Answer:- 1. It is jelly like substance present between the cell membrane and nucleus.
- The cytoplasm is responsible for holding of the cell.
- It is responsible for giving the shape to the cell.
F.) Explain in brief about nucleus.
Answer:- 1. Nucleus is the important component in the living cell.
- It is generally spherical and located in the centre of the cell.
- Nucleus is separated from the cytoplasm by a membrane called nuclear membrane.
- Nucleus contains thread like structure called chromosomes.
- The chromosomes carries genes and inheritance or transfer of characters from parents to offspring.
- Nucleus acts as control centre of activities of the cell.
G.) True or false.
1.) Gene is a unit of inheritance in living organisms.
Answer:- True
2.) Prokaryotes have nuclear membrane.
Answer:- False
3.) The size of the cell have relation with the size of the body of plants and animals.
Answer:- False
4.) The smallest cell is 0.1 micrometer to 0.5 micrometer.
Answer:- True
5.) Chromosomes carry inheritance character.
Answer:- True
Cell structure and function Class 8 worksheet