Question

important mcq question on class 9 ch 1 of bio the fundamental unit of life ncert​

Answer 1

Answer:

good morning dear

Explanation:

1.difference between plant cell and animal cell

2. draw the labelled diagram of plant cell or animal cell

3. What prokaryotic cell.

4. what are the function of mitochondria.

5. why mitochondria is also called energy store house?

6 What are the function of cell wall.

7. write down the parts of animal cell and their functions.

Answer 2

Cells type the structure of an associate degree entity.

• a gaggle of cells form a tissue, more an organ and ultimately an organ system. They perform basic functions and life processes adore respiration, digestion, excretion etc in each animate thing and cellular entity.
• They perform all the activities severally. therefore, cells are observed as structural and fundamental units of life
• the tiniest purposeful unit of life is a cell, discovered by a man of science in 1665. A cell will independently perform all necessary activities to sustain life.
• Hence cell is the basic unit of life. There are 2 styles of cells plant cell and animal cell. the various cell organelles and their functions are as follows:

1. Plasma/Cell membrane:

• this can be the utmost covering of the cell that separates the contents of the cell from its external environment.
• The cell wall permits or permits the entry and exit of some materials in and out of the cell therefore the cell membrane is termed a by-selection pervious membrane

2. plasma membrane (Protective wall):

• Plants cells, additionally to the plasma membrane have another rigid outer covering called the cell wall

3. Nucleus (Brain of a cell):

• The nucleus incorporates a double-layered covering referred to as a nuclear membrane.
• The nuclear membrane has pores which permit the transfer of fabric from within the nucleus to its outside, i.e., to the protoplasm.

4. Cytoplasm:

• The cytoplasm is the fluid content inside the plasma membrane.
• It additionally contains several specialised cell organelles. every one of those organelles performs a selected performance for the cell.

5. Cell Organelles:

• each cell has a membrane around it to stay its content and break away from the external environment.
• the various elements of a cell perform different functions and these components are called cell organelles

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