Class 3 Science: Unit 1 - All Exercise with Answer [Page No. 10 and 11]

THINGS TO DO PROJECT WORK

Make a list of twelve things found in your house. Classify them into man made, natural, living and non-living things.

Ans: Lists: House, Tree, Stone, Bike, Goat, Bird, Mobile, Pen, Book, Water, Flower, Cow, etc.

1. Man Made Things: House, Bike, Mobile, Pen, Book.
2. Natural Things: Tree, Stone, Goat, Bird, Water, Flowwr, Cow.
3. Living Beings: Tree, Goat, Bird, Flower, Cow.
4. Non-living things: House, Tree, Stone, Bike, Mobile, Pen, Book, Water.

Exercise

1. Complete the following words with the help of the clues:

- A young cat = kitten

- A fruit has inside it = seed

- Pores in leaves = stomata

2. Fill in the spaces using the words given below.

energy, fins, life, baby plants, live

(a) Living beings have life.

(b) Fish have fins to swim.

(c)Seeds contain baby plants

(d) Living beings eat food to live.

(e) Food provides energy to living beings.

3. Match the following:

snakes = crawl

seeds = grow into baby plants

closes leaves = touch-me-not plant

a stone = cannot grow

4. Write [T] for the true statements and [F] for the false ones.

(a) Living beings need food to grow. [T]

(b) Fish breathe through the gills. [T]

(c) The sun, rivers and mountains are man-made things. [F]

(d) Plants cannot prepare their own food. [F]

(e) Animals can feel. [T]

5. Answer the following questions.

(a) Define living beings and non-living things.

Ans: The things which have life in them are called living beings and the things which do not have life in them are called non-living beings.

(b) What are man-made things?

Ans: The things which are made by humans are called man-made things.

(c) Why do you react when you touch ice?

Ans: I do react when I touch the ice because I feel cold.

(d) How can you say that a fish is a living being?

Ans: Fish is a living beings because it has various features of living beings.

(e) How do animals get food?

Ans: Animals get food from plants and other animals.

(f) Why do living beings need food?

Ans: Living beings need food to alive and get energy.

(g) How do plants breathe?

Ans: Plants breathe through very small pores of their leaves called stomata.

(h) Write any three differences between living beings and

non-living things.

Ans: Non-living things differ from living beings in the following ways: 

Living beings	Non-living things
1. Move from place to place.	1. Do not move themselves.
2. Need food to live.	2. Do not need food.
3. Grow from small to big.	3. Do not grow.
4. Breathe and get energy.	4. Do not breathe.
5. Can feel.	5. Cannot feel.
6. Reproduce.	6. Do not reproduce.
7. Have life and die.	7. Are lifeless.
8. Excretel useless things.	8. Donot excrete.

(i) A car is a non-living thing. Why?

Ans: A car is a non-living thing because it doesn't have life and other features of living beings.

6. Draw the picture of a hen in your notebook and colour it.

[अभिभावकलाई निर्देशन: विद्यार्थीहरुलाई माथिको सबै अभ्यासहरु नोट कपिमा सार्न लगाएर पढ्ने र त्यसलाई नहेरि लेख्ने अभ्यास गराउनुहोला ।]