Question

1. Differentiate between unicellular and multicellular organisms.

2. Define Tissue.

3. Why few cells can change their shape?

4. Why nerve cells are branched shape?

5. Draw muscle cells and nerve cell.​

Answer 1

Answer:

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Answer 2

Answer:

5. b) Muscle cells c) Nerve cells

1. Organisms made of more than one cell are called multicellular. The single celled organisms are called unicellular. Unicellular: A single celled organism performs all neccessary function that a multicellular organism do. Multicellular: The no. of cells being less in smaller organisms does not, in any way, affect the functioning of the organisms. Multicellular ex: human, dog, cat, etc. Unicellular ex: amoeba , etc.

Explanation:

2. A group of similar or dissimilar cells which carry out a common function and have a common origin.

3. The change in the shape is due to formation of pseudopodia which facilitates movement and help in capturing food.

4. The nerve cells receives and transfers messages, thereby helping to control and coordinate the working of different parts of the body.