CLASS 8 REVISION CELL STRUCTURE AND FUNCTIONS.

CELL  STRUCTURE AND FUNCTIONS.

REVISION

VERY SHORT ANSWER QUESTIONS

1. In leaves, name the cell organelle and pigment that is responsible
for green colour.
2. The instrument used to observe cells is ________
3. We do not sense any pain when we clip our nails or cut our hair.
Why?
4. In a cell, where are the genes located?

5. Amoeba and Paramecium belong to which category of organisms?
6. What are the functions of cell wall in plant cells?

7.Read the following statements and write the appropriate term
against each statement.
A. I control the functions of a cell. Who am I? . .................
B. I am like a policeman. I do not allow anything and everything
to get in and out of the cell. Who am I? . .................
C. I transfer characters from parents to offsprings. Who am I?

..................

8.Fill in the blanks with the terms given in the box below:
Nucleus, chromosomes, cell wall, cell membrane, protoplasm,
cytoplasm, ribosome, cell organelles
The outermost layer of plant cells is the________________ (a) beneath which
is the______________ (b) . The term ____________(c) refers to the jelly-like substance
containing all the ___________(d) . The ________________(e) contains thread-like

structures called _________________(f) .

9.The size of the cells of an organism has no relation with the size

of its body. Do you agree? Give reason for your answer.
10. Identify the type of cell and write their functions.