All living things are made up of cells. The cell is the basic structural and functional unit of life. They were discovered by Robert Hooke in the year 1665. Cells consist of cytoplasm, organelles and nucleus enclosed within a plasma membrane. The membrane contains biomolecules such as proteins and lipids.

Match the following: Column A Column B (a)Unicellular (i)Green Plants (b)Multicellular (ii) Amoeba (c)Phototropism (iii)Plants and Animals (d)Autotrophs (iv)Animals (e)Heterotrophs (v)Growth towards light

(a)- (ii) Unicellular organisms are made up of only one cell that carries out all the functions needed by the organism. Unicellular organisms include bacteria, protists like Amoeba , and yeast. (b) - (iii) Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialised functions. Animals (Example: earthworm) and plants (Example: Mango) are multicellular organisms. (c) - (v) The movement of plant parts in response to light is called phototropism. The roots of the plant grow away from light while stem grows towards the light. Roots are negatively phototropic and stem is positively phototropic. (d) - (i) Green plants produce their own food by a process called photosynthesis. Therefore, plants are called autotrophs. (e) - (iv) Animals do not contain chlorophyll (a green coloured pigment), therefore cannot prepare their food. All animals depend on plants and other animals for their food. Therefore, they are called heterotroph. Column A Column B (a) Unicellular (ii) Amoeba (b) Multicellular (iii) Plants and animals (c) Phototropism (v) Growth towards light (d) Autotrophs (i) Green plants (e) Heterotroph (iv) Animals

Cell is the structural and functional unit of life. It is discovered by the scientist called Robert Hooke in 1665. The components of cell are cell membrane, nucleus, and cytoplasm. It contains a jelly-like structure which contains many organelles such as, mitochondria, chloroplast, nucleus, Golgi complex, ribosomes etc.

EASY

Earn 100

Name two organisms made up of single cell.

Important Questions on Cell - Structure and Functions

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

Why diffusion process is not suitable for transportation in multicellular organisms ?

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

The shell of an egg is removed by dissolving it in :

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

What is a cell?

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

What are the basic parts of all the cells?

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

The basic unit of living things is called :

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

What is the basic similarity among all the living organisms (plants and animals)?

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

Which living thing is compared with the bricks of a wall?

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Science>Biology>Cell - Structure and Functions>Discovery of the Cell

What is the basic structural and functional unit of life?

EASY

Science>Biology>Cell - Structure and Functions>Discovery of the Cell

_____ is the smallest entity of our body.

MEDIUM

Science>Biology>Cell - Structure and Functions>Discovery of the Cell

Match the following:

Column A	Column B
(a)Unicellular	(i)Green Plants
(b)Multicellular	(ii)Amoeba
(c)Phototropism	(iii)Plants and Animals
(d)Autotrophs	(iv)Animals
(e)Heterotrophs	(v)Growth towards light