Question 1
Choose the correct statement with respect to unicellular organisms:

(a) in unicellular organisms, tissues work in co-ordination to perform different functions.
(b) unicellular organisms do not require food.
(c) unicellular organisms respire and reproduce.
(d) all unicellular organisms move by cilia.

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Solution

(c) unicellular organisms respire and reproduce

A single-celled (unicellular) organism performs all the necessary functions that multicellular organisms perform. A single-celled organism, like amoeba, captures and digests food, respires, excretes, grows and reproduces.

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Statement : Unicellular organisms do not respire, only multicellular organisms respire.

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Question 31
Is the following statement correct? If it is wrong, correct the statement
Statement : “Unicellular organisms do not respire, only multicellular organisms respire.”

(a) What are unicellular organisms? Name two unicellular organisms.
(b) What are multicellular organisms? Name two multicellular organisms.

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(c) unicellular organisms respire and reproduce A single-celled (unicellular) organism performs all the necessary functions that multicellular organisms perform. A single-celled organism, like amoeba, captures and digests food, respires, excretes, grows and reproduces.

(c) unicellular organisms respire and reproduce

A single-celled (unicellular) organism performs all the necessary functions that multicellular organisms perform. A single-celled organism, like amoeba, captures and digests food, respires, excretes, grows and reproduces.