Thursday, October 5, 2017

CBSE Class 8 - Science - Ch 8 - Cell Structure and Functions (Worksheet) (#cbseNotes)


Cell Structure and Functions (Worksheet) 


CBSE Class 8 - Science - Ch 8 - Cell Structure and Functions (Worksheet) (#cbseNotes)


Fill in the blanks

1. ______ is the structural and functional unit of life.


2. All living organisms are made of ______.


3. Cells were first observed by ____________ in 1665.


4. Antonie van Leeuwen hook was the first to see __________ under microscope which he had constructed himself




5. The cell has 3 main parts - _______, _______ and  ________.


6. __________ discovered nucleus in orchid leaf.


7. Plant cells differ from those of animals in having an additional layer around the cell membrane termed _______.


8. _______ gives strength and rigidity to plants.


9. Single celled animals are called __________ organisms.


10. ________ is an single cell organism. It  has no definite shape. It keeps on changing its shape varying protruding out of its body called __________.


11. The largest cell, measuring nearly 17 cm X 18 cm, is the egg of a/an ________.


12. The boundary of a cheek cell is the ________.


13. The jelly like substance between the nucleus and the cell membrane is called ________.


14. The technique is based on the fact that there are a few coloured substances (e.g. Safaranin) that get attached to different parts of a cell, is called _________.


15. Boss of the cell is ________________.



Answers:
1. Cell
2. cells
3. Robert Hooke
4. living cell or living bodies
5. The cell membrane, Cytoplasm, Nucleus.
6. Robert Brown
7. cell wall
8. Cell wall
9. unicellular
10. Amoeba, pseudopodia
11. Ostrich
12. cell membrane
13. cytoplasm
14. Staining
15. Nucleus

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