Question

B. Fill in the blanks:
1. Microorganisms can live in a_____ of habitat
2. Bacteria are
3. Dead algae becomes______and pollutes water
4. Algae help to_____ the environment
5. Mushrooms are______food
C. Match the columns:
Column I
1. Mildews
2. Bacteria
Column II
(a) Salmonella
(b) Bacteria eater
(c) Fungi
(d) Seaweeds
(e) Algae
3. Bacteriophage
4. Gelidium
5. Laminaria​

Answer 1

Answer:

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Answer 2

1. Microorganisms can live in soil, air and water of habitat.

• Microorganisms are tiny living things that cannot be seen with naked eyes. They are present everywhere in soil, water and air

2. Bacteria are single-cell organisms.

• Bacteria are living organisms made of only one cell. Few require oxygen and heat for survival, others don't.

3. Dead algae becomes decomposed and pollutes water.

• Dead algae decompose through bacteria which reduces oxygen in water and fish die. This leads to water pollution.

4. Algae help to reduce carbon dioxide in the environment.

• Algae is carbon neutral so it absorbs excess carbon dioxide from the environment.

5. Mushrooms are vitamin D food.

• Ergosterol present in mushrooms changes into vitamin D in the presence of ultraviolet rays.

1. Mildews Fungi (c)

2. Bacteria. Salmonella (a)

3. Bacteriophage Bacteria eater (b)

4. Gelidium. Algae (e)

5. Laminaria Seaweeds (d)

1. Mildews are produced by various fungi.
2. Salmonella belongs to the Enterobacteriaceae bacteria family.
3. Bacteriophage is a virus that infects bacteria.
4. Gelidium belongs to the algae family.
5. Laminaria is a type of seaweed.

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