Page 257 - New Medley 4 Semester 1

3. This disease is caused by a virus.

(a) Tetanus (b) Malaria

(c) Polio (d) Tuberculosis
4. Sealing foods in airtight cans for protection against microbes is called

(a) dehydration (b) salting

(c) canning (d) freezing

B. Fill in the blanks with the correct word from the box.

hot Fungi damp Viruses Protozoa

1. can reproduce only inside the body of a living organism.

2. are single-celled animals.

3. are nongreen plants.

4. Microbes grow faster in and places.

C. Answer these questions.
1. What are microbes? Name their different types.

2. What are the different shapes of bacteria?
3. Why are fungi not able to make their own food?

4. What is dehydration?
5. Why is milk boiled before use?

6. Why do pickles and jams stay fresh for a long time?

Think and Answer • Critical Thinking

Circle the odd one out and give reason for your choice.

1. Polio, Measles, Common cold, Cholera

2. Chickenpox, Typhoid, Pneumonia, Tetanus
3. Freezing, Boiling, Washing, Canning

4. Bacteria, Mushroom, Protozoa, Fungi

Let Us Do S E L Self-Management • Collaboration/Hands-on Learning

Collect some water from a pond and observe it under a hand lens. Draw the pictures

of organisms seen by you. Take the help of your teacher to identify the organism.

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