Question

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E. Answer the following.
1. Why are cells called the structural and functional units of living organisms?
2. What is an organelle? Name some organelles.
3. Why are mitochondria called the 'powerhouse of the cell??
4. What does a nucleus contain?
5. What causes the colour of ripe fruits?
F. Explain in brief.
1. How do multicellular organisms grow?
2. Draw a plant cell and an animal cell. Distinguish between them.​

Answer 1

Answer:

1) cell are called the basic structural and functional unit of life because cells make tissues and tissues make organ and organ make organism

2)organelle means tiny organ e. g mitochondria, e. r. ,Golgi body. 3) mitochondria is called the power house of the cell because it makes a. t. p. energy currency of cell. 4) nucleus contains genes and chromosome. 5) chrmoplast causes ripening of fruit. 6) multicellular organism grow because of cell division. 7)plant cell : has plastids and big vacuoles animals cell does not have