WORK SHEET FOR FUNDAMENTAL UNIT OF LIFE
I Solve the puzzle:
1R
2
M
3
P
4
L
5
V
6
P
8
O
9
N
10
C
7
C
 Across:
5. Large fluid filled space found in plant cell. (7)
6. Cells lack a nuclear membrane. (11)
8. Structures in cell with particular function. (9)
10. Protoplasmic mass of the cell inner to the plasma membrane. (9)
 Down:
1. Site of protein manufacture. (8)
2 Power- house of the cell. (12)
3 Organelle present only in plant cell. (7)
4 Suicidal bag of a cell. (8)
7 Substance that make up cell wall. (9)
9 Organelle which contains hereditary information for controlling cell
activities. (7)
II Answer the following:
1. If you are provided with some vegetable to cook, generally add salt to the
vegetables during cooking process. After adding salt, vegetables releases
water. What mechanism is responsible for this? Explain.
2. What are different types of Endoplasmic Reticulum? Write their function.
3. If cell of onion peel and RBC are separately placed in hypotonic solution,
what among the following will take place? Explain the reason.
(a) Both the cells will swell
(b) RBC will burst early while cells of onion peel will resist bursting to some
extent
(c) Both a and b are correct
(d) RBC and onion peel cells will behave similarly
4. Which organelle is called ‘Digestive bag’ and why?