Question

Answer questions 6 to 12 whoever will answe i will mark him as brainliest

Answer 1

Hyy Dude

Ans6. Endocytosis refers to imagination of a small region of plasma membrane, forming an intercellular membrane-bound vesicle. ... Endocytosis is not shown by plant cells because a rigid cell wall is present over the plasma membrane in them. Thus, this process is found in animals only.

Ans 7. Division of labour exists even at intracellular level and this is evidenced by the fact that cells have different organelles within them that perform different functions. Explanation: ... The cell is endowed with various organelles in them that perform various functions.

Ans 8. The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.

Ans 9. All cells in living beings have three common things—cytoplasm, DNA, and a plasma membrane. ... All cells consist of DNA even if they lack nucleus.

Ans 10. It is a false statement as Mitochondria is the power house of the cell. It releases energy in the form of ATP. Answer: the given statement is false as plant cells provide both chloroplasts and mitochondria.

Ans 11. Plants contain meristematic tissue located at certain regions where growth takes place by division of cells. They are present only at the growing regions such as root tip, shoot tip and cambium. Cells of other regions of plant, do not divide and the growth is restricted in those regions.

Ans 12. The identification of animal tissue with their description is: Tissue A: Adipose tissue, located below the epithelium. Tissue B: cardiac muscle, located at the heart.

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Answer 2

Answer:

6. Endocytosis refers to imagination of a small region of plasma membrane, forming an intercellular membrane-bound vesicle. It has been observed in many kinds of animal cells, where the plasma membrane is in direct contact with external medium. Endocytosis is not shown by plant cells because a rigid cell wall is present over the plasma membrane in them. Thus, this process is found in animals only.

7.

• Each cell has got certain specific. components within it known as cell organelles.
• Because of these cell organelles, a cell is able to perform all its function perfectly and exist(live).
• All cells are found to have the same cell organelles, no matter what their function is or in which organism they are found.
• Each cell organelle performs its unique/special function and constitute to the basic unit of life – cell. Therefore a division of labour exists even at intra cellular level.

Example:

1) Nucleus: this is the nerve centre of the cell where all cellular activities are controlled.

2) Ribosomes: These organelles form the site where proteins are synthesised.

3)Cytoplasm: This is the fluid part of the cell that acts as the medium by which nutrients are transported to all the cell organelles.

4) Golgi bodies: These organelles package and transport lipids within the cell

5) Mitochondria: The structure in which energy in the cell is produced.

6) Endoplasmic reticulum: Organelle that regulates protein and other molecular production.

8. The significane of plasma membrane is that ithi protects the cell from its external environment, mediates cellular transport, and transmits cellular signals.