Question

1. For plant cells, which organelle produces most energy that may later be used by the entire cell?

a) chloroplast

b) vacuole

c) mitochondrion

2. What cell type that performs photosynthesis in plants are:

a) fiber cells

b) parenchyma cells

c) collenchyma cells

Answer 1

Question 1.
Option (c) Mitochondrion is correct answer.
Mitochondria -
• This cell organelle is called as "power house of cell".
• Almost of energy for cellular functions is generated in this organelle.
• Mitochondria is site for major steps of cellular respiration like Krebs cycle and electron transport chain which are highly energy producing steps of cellular respiration.

Others -
Chloroplast -
• This is site for photosynthesis process.
• By this process, light energy is converted to carbohydrates using water and carbon dioxide gas.
• Hence, chloroplast produces food for plant.

Vacuole -
• This is a membrane bound sac which is involved in storage and waste disposal of cell.

Question 2.
Option (C) Parenchyma cells, is correct answer.

Parenchyma -
• This tissue is found in soft part of plant and involved in photosynthesis, storage and transport.
• Parenchymal cells which have chloroplast and involved in photosynthesis called, chlorenchyma cells. These cells found in leaves.

Other options -
Fiber cells - these are dead cells and provide support to stem and roots.
Collenchyma - these are elongated cells with thickened wall and provide support in primary growth region of plant.