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. ( no need to label it )​

Answer 1

1. Differentiate between unicellular and multicellular organisms.

Ans -

Multicellular Organisms -

• They are made up of more than one cell. For Example, Mango Tree and Frog.

• Multicellular organisms with billions of cells also start their life as a single cell. The fertilised egg (which is a single cell) multiplies to form more cells as the organism develops.

Unicellular Organisms -

• they are made up of a single cell. For Example, Amoeba and Paramecium.

• Single-celled organisms also perform all the necessary life functions like multicellular organisms, including ingestion, digestion of food, respiration, excretion, reproduction, and growth.

2. Define Tissue.

Ans -

• tissue is a collection of interconnecting cells that perform of similar function within an organism .

• In other words It is a group of cell working together mainly inside an organ.

3. Why few cells can change their shape?

Ans -

• There are few cells which can change their shape according to their requirement. For example: WBC(White blood count) and Amoeba.

• Immune cells are cells that respond when the body is infected (by a bacterium, for instance). To do their job, they need to be able to change shape.

• For instance, lymphocytes may need to move through body tissue to get to the site of infection, so they change their shape to squeeze past tightly packed tissue cells.

• Some immune cells (such as neutrophils) engulf bacteria and viruses, so they need to change their shape to 'swallow' them.

4. Why nerve cells are branched shape?

Ans -

• The nerve cell is branched-shape cell as Nerve cell receives and transfers messages for helping to control and coordinate the working of different parts of the body.

5. Draw muscle cells and nerve cell. ( no need to label it )

Ans -

• Your answer is in attachment !

Answer 2

Answer:

Q1- Differentiate between unicellular and multicellular organisms.

→Unicellular organisms

★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.

→Multicellular organisms

★Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions.

Q2-Define Tissue.

→Tissue, in physiology, a level of organization in multicellular organisms; it consists of a group of structurally and functionally similar cells and their intercellular material.

Q3-Why few cells can change their shape?

→Cells differ in their shape and size due to kind of the function they perform. ... WBC's changes its shape to reach out the infected cells and fight against infections.

Q4-Why nerve cells are branched shape?

→Nerve cells are long and have branches because they need more surface area to pass the signals to cell by cell. Their branches structure helps them to receive and transfer messages, thereby helping to control and coordinate the working of different parts of the body.

Q5-Draw muscle cells and nerve cell.

→Answer In Attachment

Please note:-

1st pic ☞ Nerve cells

2nd pic ☞ Muscles

Hope it helps!

please mark me as brainilest ✔️

please follow me permanently and take 10 thanks in return