Question

3. Organelle present only in plant cells that provides mechanical support​

Answer 1

Explanation:

Endoplasmic reticulum organelle

is present only in plant cell that provides mechanical support

Answer 2

Answer: Large Vacuole

Explanation:

The large central vacuole is surrounded by its own membrane and contains water and dissolved substances.

Its main function is to give turgidity to the plant cells by  pressing against the inside of the cell wall, giving the cell shape and helping to support the plant.

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Note: Endoplasmic reticulum present in both animal and plant cell provides mechanical support.