Question

2. Distinguish between unicellular and multicellular organisms. Give two examples
of each
3
Give reasons for the following:
(a) The cell is called the structural and functional unit of life.
(b) Plant cells are more rigid than the animal cells.
Which cell organelle is known as the 'Powerhouse of the cell? Why is its
called?
4.
5.
Name the cell organelles responsible for imparting colour to the leaves an​

Answer 1

Answer:

Unicellular organisms are organisms which are made up of single cell

Multicellular organisms are organisms which are made up of more than one cell

Explanation:

it may help u

Answer 2

2. Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. 

Ex - Unicellular - Amoeba and Euglena.

Multicellular - Humans and Animals.

3. (a) The cell is called the structural and functional unit of life because certain basic functions like respiration, growth, reproduction etc are performed by the cell and these functions are essential for the survival of living organisms.

(b) Plant cells are more rigid than the animal cells because they have definite shape due to a rigid cell wall around them. In comparison of animal cell, have a cell membrane as their outer cover.

4. Mitochondria is known as the 'Powerhouse of the cell'. It is so called because they are responsible for cellular respiration and for generation of energy.

5. Chromoplasts are responsible for imparting colour to the leaves and fruits of a plant.