1.
An example of a non-living tissue used in osmosis experiment is
cellophane
filter paper
potato
polythene
2.
Cockroaches in a cupboard were killed after an insecticide had been sprayed. The insecticide reached the cockroaches by the process of
osmosis.
absorption.
diffusion.
radiation.
3.
An example of the process of osmosis is
Selective reabsorption
Absorption of digested food
The spread of petrol scent
Gaseous exchange in living things
4.
Dissolved mineral salts from the soil enter the plant by the process of
phototropism
transpiration
diffusion
osmosis
5.
The scent of a perfume sprayed at one corner of a room fills the entire room through
conduction.
diffusion.
osmosis.
radiation.
6.
Oxygen from the air is able to get into the blood by
capillarity.
diffusion.
osmosis.
suction.
7.
Movement of the particles of a gas from a region of higher concentration to a region of lower concentration is known as
capillarity.
diffusion.
osmosis.
viscosity.
8.
An example of a non-living tissue used in osmosis experiment is
cellophane
filter paper
potato
polythene
9.
Which of the following statements about diffusion is/are correct?
I. It involves the movement of water molecules only
II. It occurs in both gases and liquids
III. It involves a semi-permeable membrane
I only
II only
I and II only
I, II and III
10.
Which of the following processes is an example of osmosis?
Spreading of perfume in a room.
Absorption of food nutrients into the small intestines.
Spreading of potassium permanganate in water.
Absorption of water into the root hairs.
11.
Kidneys absorbs water from the blood stream of humans through the processes of
diffusion.
egestion.
osmosis.
assimilation.
12.
Absorption of water by plant roots is an example of ......
transpiration
guttation
osmosis
diffusion