CLASS - 3// SUBJECT - SCIENCE // LESSON - 5 // PLANTS- PARTS AND THEIR FUNCTIONS //

-

 

LESSON - 5

PLANTS- PARTS AND THEIR FUNCTIONS

 

1.    What are the two main parts of a plant?

A plant is divided into two main parts- the shoot and the root. The part of the plant which is above the soil is called the shoot. The part of the plant which remains under the soil is called the root.

 

2.    What are the main functions of a root?

a.     Roots fix plants firmly in the soil.

b.    They help the plants to stand straight

c.     They hold the soil and prevent it from being washed away by water or wind.

d.    They take in water and minerals from the soil and pass them, to the stem.

e.    Some roots store food.

 

3.    What are the main functions of leaves? Why are they called the kitchen of the plant?


Leaves prepare and store food for the plant, gives out the oxygen during the process of photosynthesis.  The process by which leaves make food in the presence of carbon dioxide, water and sunlight is called photosynthesis. Therefore, they are known as the kitchen of the plant.

 

4.    Explain the structure of a seed with the help of a well-labelled diagram.

 

The hard outer cover of the seed is called the seed coat. It protects the seed. There is an embryo that grows into a baby plant. The inner part of the seed that provides food to the baby plant is called seed leaves. The seed hole allows air and water to enter the seeds.

 

5.    What are edible and non-edible seeds?

We eat seeds of some plants. They are called edible seeds. And the seeds which are not to be eaten they are called non-edible seeds.

 

6.    What is germination? Describe the process of germination.

The process by which a seed starts growing into a new plant is called germination. When a seed is sown into the moist soil, it takes in water from the soil. Then a shoot grows upwards towards light. Soon a seedling with tiny leaves comes out of the ground and it grows into a new plant. Seeds need water, air and warmth to germinate.

 

7.    Write some ways by which we can take proper care of the plants.

a.     We should water the plants daily

b.    We should add manure to the soil

c.     Keep removing unwanted plants called weeds.

d.    Sufficient space should be left between two consecutive plants

e.    Keep it in sunlight.

Comments

Post a Comment

Popular posts from this blog

CLASS - 3|| SUBJECT - SCIENCE|| LESSON - 4|| INSECTS||

-
Image
  LESSON – 4 INSECTS   QUESTIONS & ANSWERS :-   1.   What are insects? Name some common insects found in our surroundings. Insects are small creatures that are found almost everywhere. They are different in size, colour and features. Some common insects like ants, bees, butterflies, beetles, mosquitoes, flies, honeybees and grasshoppers can be seen in our surroundings.   2.   What are the main parts of an insect’s body? Draw a labelled diagram of an insect’s body. An insect’s body is divided into three main parts – head, thorax and abdomen. 3.   What do you mean by life cycle? Draw a labelled diagram of the life cycle of a butterfly. Life cycle is the series of changes that happen to a living creature over the course of its lifetime.   4.   Name three insects which are useful to us and how? There are some insects which are very useful to us. a.   Honeybees give us honey and beeswax. Candles, soaps and cr...
Read more

CLASS 6 / GEOGRAPHY / LESSON 1 (Q/A)

-
Chapter 1 The Earth in the Solar System I.              Answer the following questions briefly. 1.      How does a planet differ from a star?   Differences between a planet and a star: PLANET STAR A planet does not have its own light and heat. It derives its light from a star A star possesses its own heat and light. A planet is usually smaller than stars. Stars are very huge objects compared to a planet in general. 2.     What is meant by the ‘Solar System’? The term Solar System refers to the “family” of the Sun. The Sun is a star around which eight planets, among other celestial objects, revolve in orbits. This whole system of bodies is called the Solar System. The Sun is the “head” of this system.   3.     Name all the planets according to their distance from the sun. The list...
Read more