Q: Make a comparison and write down ways in which plant cells are different from animal cells.

PLANT CELL ANIMAL CELL A. Have a cell wall. A. Have no cell Have wall. B. Nucleus is on side of cell. B. Nucleus is in center on cell. C. Have large vacuoles. C. Have only small vacuoles. D. Have regular in shape. D. Often irregular in shape. E. Has plasmodesmata. E. Has no plasmodesmata.

Q: Different cells have different sizes. Arrange the following cells in ascending order of their size and select the correct option:(i) Mycoplasma (ii) Ostrich egg(iii) Human RBCs (iv) Bacteria

The smallest cell is Mycoplasma (0.1-0.5\$\mu m\$). The bacterial cell measures 3-5\$\mu m\$ in length. Erythrocytes (RBCs) are 6-8\$\mu m\$ in diameter. The largest cell is the egg of an ostrich.So, the correct answer is option "(i) \$\rightarrow\$ (iv) \$\rightarrow\$ (iii) \$\rightarrow\$ (ii)".

Question 1

Make a comparison and write down ways in which plant cells are different from animal cells.

Accepted Answer

&#10; &#10;  &#10;                                       &#10;  PLANT CELL&#10;  &#10;  &#10;                                    &#10;  ANIMAL CELL&#10;  &#10; &#10; &#10;  &#10;  A.     &#10;  Have a cell wall.&#10;  &#10;  &#10;  A. Have no cell Have wall.&#10;  &#10; &#10; &#10;  &#10;  B.     &#10;  Nucleus is on side of cell.&#10;  &#10;  &#10;  B. Nucleus is in center on cell.&#10;  &#10; &#10; &#10;  &#10;  C.     &#10;  Have large vacuoles.&#10;  &#10;  &#10;  C. Have only small vacuoles.&#10;  &#10; &#10; &#10;  &#10;  D.     &#10;  Have regular in shape.&#10;  &#10;  &#10;  D. Often irregular in shape.&#10;  &#10; &#10; &#10;  &#10;  E.      &#10;  Has plasmodesmata.&#10;  &#10;  &#10;  E. Has no plasmodesmata.&#10;  &#10; &#10;

Question 2

Define structure and function of a cell.

Accepted Answer

A cell is a fundamental structural and functional unit of life. Thus a cell is capable of existing independently and performing all the vital functions. The structure of cell consists of following structures, namely-1) Cell wall - In plant cells only, outermost layer.2) Cell membrane - outermost layer in the animal cell.3) Endo-membrane system consisting of -The endoplasmic reticulum (ER){having smooth ER and rough ER}, Golgi apparatus, Lysosomes and Vacuoles.4) Mitochondria: as energy-producing organelle in the cell.5) Plastids: In plant cells only.6) Ribosomes7) Cytoskeleton of cell8) Cilia and Flagella 9) Centrosome and centrioles.10) Nucleus.All of these structures work under influence of one another causing functioning of the cell for vital processes.

Question 3

Why is the cell called the structural and functional unit of life?

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Question 4

Different cells have different sizes. Arrange the following cells in ascending order of their size and select the correct option:(i) Mycoplasma                  (ii) Ostrich egg(iii) Human RBCs              (iv) Bacteria

Accepted Answer

The smallest cell is Mycoplasma (0.1-0.5$\mu m$). The bacterial cell measures 3-5$\mu m$ in length. Erythrocytes (RBCs) are 6-8$\mu m$ in diameter. The largest cell is the egg of an ostrich.So, the correct answer is option &#34;(i) $\rightarrow$ (iv) $\rightarrow$ (iii) $\rightarrow$ (ii)&#34;.

Question 5

Explain &#34;cells are the basic structural units of living organisms&#34;.

Accepted Answer

Each living organism is made up of cells. All the life processes take place inside the cell. A group of cells form a tissue to perform specific functions, these tissues combine together to form organs. Different organs together make up an organism.

Question 6

The jelly like substance present in the cell is called as

Accepted Answer

The jelly-like substance inside the cell is called as cytoplasm. Cell organelles are suspended in the cytoplasm. Hence the correct option is D.

Question 7

How are plant cells different from animal cells?

Accepted Answer

Plant cells have cell wall, plastids, and a large central vacuole, which are not found in animal cells. The cell wall is a rigid covering that protects the cell, provides structural support and gives shape to the cell. The chloroplasts, found in plant cells, contain a green pigment called as chlorophyll, which captures the light energy that drives the reactions of plant photosynthesis. Thus, the correct answer is option C.

Question 8

Cell is the basic unit of life. Discuss it in brief.

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Question 9

The cell is the basic structural unit of living organisms. What does the statement mean?

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Question 10

Why is a cell called the building block of life?

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