Question

define the term cell for plants and animals name the different organelles that make a cell explain why none of these is called the structural and functional unit of life​

Answer 1

What is a cell? Why is it the structural and functional into of life?

• Cell is the basic structural and functional unit of life.
• It is like bricks in a building.
• All organisms are made up of cells.
• Cells constitute basic functional unit.

Cell

⇓

Tissues

⇓

Organs

⇓

Organ system

⇓

Human

Kinds of cell

• There are two kinds of cell.

1. Plant cell:

• It has an outer rigid cell wall which is made up of cellulose.
• It has plastids.
• It has large vacuoles which occupies more space in the cell.

2. Animal cell:

• It lacks cell wall.
• It lacks plastids.
• It usually lacks vacuoles. Even if they are present, the occur in minute sizes.

What are cell organelles? What are the different cell organlles that make a cell?

Cell organlles are organised structures of cytoplasm capable of growth and multiplication. Each organlle is responsible for specific function.

The different cell organelles which make up cell are:

• Lysosomes
• Endoplasmic Reticulum
• Ribosomes
• Mitochondria
• Plastids
• Golgi Apparatus
• Vacuoles
• Per-oxisome
• Centrosome
• Cilia & Flagella (Cilium and Hagellum)