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Question Bank Solutions for CBSE (English Medium) Class 8 - CBSE - Science

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Fill in the blanks:

Microorganisms can be seen with the help of a _________

[2] Microorganisms: Friend and Foe
Chapter: [2] Microorganisms: Friend and Foe
Concept: Microorganisms (Microbes) and Microbiology

Fill in the blanks:

Alcohol is produced with the help of _________

[2] Microorganisms: Friend and Foe
Chapter: [2] Microorganisms: Friend and Foe
Concept: Microorganisms (Microbes) and Microbiology

Tick the correct answer:

Carrier of malaria-causing protozoan is

[2] Microorganisms: Friend and Foe
Chapter: [2] Microorganisms: Friend and Foe
Concept: Microorganisms (Microbes) and Microbiology

Tick the correct answer:

The most common carrier of communicable diseases is

[2] Microorganisms: Friend and Foe
Chapter: [2] Microorganisms: Friend and Foe
Concept: Microorganisms (Microbes) and Microbiology

Match the organisms in Column I with their action in Column II.

  Column I   Column II
1 Bacteria a Fixing Nitrogen
2 Rhizobium b Setting of curd
3 Lactobacillus c Baking of bread
4 Yeast d Causing Malaria
5 A protozoan e Causing Cholera
6 A Virus f Causing AIDS
    g Producing antibodies
[2] Microorganisms: Friend and Foe
Chapter: [2] Microorganisms: Friend and Foe
Concept: Microorganisms (Microbes) and Microbiology

Can microorganisms be seen with the naked eye? If not, how can they be seen?

[2] Microorganisms: Friend and Foe
Chapter: [2] Microorganisms: Friend and Foe
Concept: Microorganisms (Microbes) and Microbiology

What are the major groups of microorganisms?

[2] Microorganisms: Friend and Foe
Chapter: [2] Microorganisms: Friend and Foe
Concept: Microorganisms (Microbes) and Microbiology

List conditions under which combustion can take place.

[6] Combustion and Flame
Chapter: [6] Combustion and Flame
Concept: Combustion

Give reasons.

Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.

[6] Combustion and Flame
Chapter: [6] Combustion and Flame
Concept: Combustion

In order to meet the ever-increasing demand in factories and for shelter, trees are being continually cut. Is it justified to cut trees for such projects? Discuss and prepare a brief report.

[7] Conservation of Plants and Animals
Chapter: [7] Conservation of Plants and Animals
Concept: Deforestation and Its Causes

Indicate whether the following statements are True (T) or False (F).

Unicellular organisms have one-celled body. (T / F)

[8] Cell - Structure and Functions
Chapter: [8] Cell - Structure and Functions
Concept: Cell: the Fundamental Unit of Life

Indicate whether the following statements are True (T) or False (F).

Muscle cells are branched. (T / F)

[8] Cell - Structure and Functions
Chapter: [8] Cell - Structure and Functions
Concept: Cell: the Fundamental Unit of Life

Indicate whether the following statements are True (T) or False (F).

The basic living unit of an organism is an organ. (T / F)

[8] Cell - Structure and Functions
Chapter: [8] Cell - Structure and Functions
Concept: Cell: the Fundamental Unit of Life

Indicate whether the following statements are True (T) or False (F).

Amoeba has irregular shape. (T / F)

[8] Cell - Structure and Functions
Chapter: [8] Cell - Structure and Functions
Concept: Cell: the Fundamental Unit of Life

Make a sketch of the human nerve cell. What function do nerve cells perform?

[8] Cell - Structure and Functions
Chapter: [8] Cell - Structure and Functions
Concept: Cell: the Fundamental Unit of Life

Explain the importance of reproduction in organisms.

[9] Reproduction in Animal
Chapter: [9] Reproduction in Animal
Concept: Reproduction in Plant

Indicate whether the following statement is True (T) or False (F).
Egg laid after fertilization is made up of a single cell. ( )

[9] Reproduction in Animal
Chapter: [9] Reproduction in Animal
Concept: Reproduction in Plant

Indicate whether the following statement is True (T) or False (F).

Amoeba reproduces by budding. ( )

[9] Reproduction in Animal
Chapter: [9] Reproduction in Animal
Concept: Reproduction in Plant

Define adolescence.

[10] Reaching the Age of Adolescence
Chapter: [10] Reaching the Age of Adolescence
Concept: Adolescence and Puberty

Choose the correct option.

Adolescents should be careful about what they eat, because

[10] Reaching the Age of Adolescence
Chapter: [10] Reaching the Age of Adolescence
Concept: Adolescence and Puberty
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Question Bank Solutions for CBSE (English Medium) Class 8 CBSE Science. You can further filter Question Bank Solutions by subjects and topics. Solutions for most of the questions for CBSE can be found here on Shaalaa.com. You can use these solutions to prepare for your studies and ace in exams. Solving questions is a great way to practice and with Shaalaa.com, you can answer a question and then also check your answer with the solutions provided.
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