NCERT Class VIII Science Solutions: Chapter 8-Cell Structure and Functions Part 5

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Question 29:

Amoeba and Paramecium belong to which category of organisms?

Answer:

Unicellular and Eukaryotic/Protozoa

Image of Eukaryotic/Protozoa

Image of Eukaryotic/Protozoa

Image of Eukaryotic/Protozoa

Question 30:

What are the functions of cell wall in plant cells?

Answer:

Cell wall protects the cell contents, gives shape to the cell.

Image of function of cell wall in plant cell

Image of Function of Cell Wall in Plant Cell

Image of function of cell wall in plant cell

SHORT ANSWER QUESTIONS

Question 31:

Is the following statement correct? If it is wrong, correct the statement

Statement: “Unicellular organisms do not respire, only multicellular organisms respire”

Answer:

No, the statement is wrong.

Both unicellular and multicellular organisms respire/all organisms respire.

Question 32:

Match the terms given in column I with their functions given in column II and fill the blanks given below the table:

Match the Column I and Column II. (Q)
Match the column I and column II. (Q)

Column I

Column II

Chloroplast

Carries hereditary characters

Cell membrane

Controls the activities of cells

Nucleus

Site of photosynthesis

Chromosome

Controls the movement of materials into and out of cells.

Answer:

Match the Column I and Column II. (A)
Match the column I and column II. (A)

Column I

Column II

Chloroplast

c Site of photosynthesis

Cell membrane

d Controls the movement of materials into and out of cells.

Nucleus

b Controls the activities of cells

Chromosome

a Carries hereditary characters

Question 33:

Observe the following diagram given as Fig.

Result for Observe the following diagram

Observe the Following Diagram

Result for Observe the following diagram

Answer the following questions.

  1. Does it represent a plant cell or an animal cell?

  2. Does it represent a prokaryotic cell or a eukaryotic cell?

Answer:

  1. It represents an animal cell

  2. It represents a eukaryotic cell