sketch and describe in your own words, the plant cell and animal cell.
Answers
Answer:
plant cell
- have cell wall
- photosynthesis process
- large nd 1 vacules
- choloplast is present
Animal cell
- absence of cell wall
- no photosynthesis process takes place
- many vacules are present
- choloplast is absent
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☞ Cell membrane: A cell is composed of cell membrane, cytoplasm and nucleus. The cytoplasm and nucleus enclosed in the cell membrane together constitute the plasma membrane. It checks the transport of substances in the cell.
☞ Cell wall: In plants, an extra protective covering known as cellulose is present. It is called cell wall and protects the plant cell from environment variations.
☞ Cytoplasm: It is a jelly-like substance present between the cell membrane and nucleus. It contains various cell organelles such as mitochondria and Golgi body.
☞ Nucleus: It is a dense spherical body located at the centre of the cell. It is surrounded by a porous nuclear membrane. It contains a spherical body called nucleolus and thread-like structures called chromosomes. Chromosomes are the structures that carry genes and play an important role in inheritance. The entire living substance in a cell is known as protoplast.
☞ Vacuoles: Vacuoles are fluid-filled membrane-bound structures in the cell. In plant cells, a single large vacuole is present. In animal cells, numerous small vacuoles are present.
☞ Plastids: They are present only in plant cells. Chloroplast is a plastid containing the green pigment called chlorophyll, which is required for photosynthesis.
☞ Mitochondria: They are involved in cellular respiration, and hence, are called ‘power houses of the cell’.
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☞ All the cell organelles in plant and animal cells are same except that animal cells have plasma membrane in place of cell wall and it does not contain chloroplasts.
