The DAV Class 3 Science Book Solutions and DAV Class 3 Science Chapter 3 Question Answer – Leaf are essential study tools for DAV public school students in Class 3.
DAV Class 3 Science Chapter 3 Question Answer – Leaf
DAV Class 3 Science Ch 3 Question Answer – Leaf
Something To Know
A. Fill in the blanks.
Question 1.
______ is the common, green part of the plant.
Answer:
Leaf
Question 2.
Leaves of different plants differ in their shape, size and ______
Answer:
texture
Question 3.
Neem and ______ leaves are often used for medicinal purposes.
Answer:
tulsi
Question 4.
The leaves of spinach and methi are used as ______
Answer:
vegetable.
B. Write True or False for the following statements.
1. Neem leaf is often used to protect clothes from insects.
2. Leaves of plant help them to make their own food.
3. Curry leaves are used to garnish food.
4. New leaves take place of old leaves.
Answer:
1. Neem leaf is often used to protect clothes from insects. (True)
2. Leaves of plant help them to make their own food. (True)
3. Curry leaves are used to garnish food. (True)
4. New leaves take place of old leaves. (True)
C. Tick (✓) the correct option.
1. The leaf of this plant is used as a plate.
(a) Banana
(b) Mango
(c) Basil
(d) Spinach.
Answer:
(a) Banana
2. These should be used to make compost.
(a) Fallen leaves
(b) Burnt leaves
(c) Flowers
(d) Roots.
Answer:
(a) Fallen leaves
3. This leaf is often used to add aroma to the food.
(a) Peepal
(b) Coriander
(c) Mango
(d) Neem.
Answer:
(b) Coriander.
D. Answer the following Questions in brief.
Question 1.
What does a leaf do for the plant?
Answer:
A leaf plays an important role in making food for the plant.
Question 2.
To what use were some leaves put by saints in olden days?
Answer:
In olden days, the saints used to write on leaves.
Question 3.
State two uses of leaves in our food.
Answer:
Spinach leaves are used as vegetable and coriander leaves are used to garnish food.
Question 4.
Name any two articles where one can find leaf designs.
Answer:
Two articles where one can find leaf designs are; curtain and bedsheet.
Question 5.
How is compost useful for plants and crops?
Answer:
Compost helps in better growth of plants and so it is useful for plants and crops.
E. Answer the following Questions.
1. State any three uses of leaves.
Answer:
Three uses of leaves are as follows:
(a) Leaves of spinach are used as vegetable.
(b) Leaves of coriander are used to garnish food.
(c) Leaves of neem are used for medicinal purpose.
2. Why do plants shed their leaves?
Answer:
Plants shed their leaves when the leaves become old and worn out. By shedding the leaves, plants also get rid of some harmful substances.
3. How can compost be made?
Answer:
Fallen leaves can be turned into compost. For this, fallen leaves and kitchen waste are dumped in a pit and covered. After about one to two months, all the waste turns into compost.
Value Based Questions
Question 1.
State the values or qualities displayed by Rahul.
Answer:
Rahul showed concern for environment.
Question 2.
Why should leaves not be burnt?
Answer:
When leaves are burnt, they produce harmful smoke. The smoke damages the environment. So, leaves should not be burnt.
Question 3.
Have you ever helped any of “our helpers”? How?
Answer:
Once I helped the sweeper in my school in cleaning the classroom. I felt very happy on doing this.
DAV Class 3 Science Chapter 3 Solutions – Leaf
I. Multiple Choice Questions (MCQs)
1. Food is prepared by which part of a plant?
(a) Root
(b) Stem
(c) Leaf.
Answer:
(c) Leaf
2. What is the usual colour of leaf?
(a) Green
(b) Blue
(c) Yellow.
Answer:
(a) Green
3. Leaf of which plant protects clothes from insects?
(a) Coriander
(b) Neem
(c) Basil.
Answer:
(b) Neem
4. Leaf of which plant has medicinal properties?
(a) Coriander
(b) Mint
(c) Basil.
Answer:
(c) Basil
5. Leaves of which plants are used as ‘plates’ for eating food?
(a) Banana
(b) Mango
(c) Peepal
Answer:
(a) Banana.
II. Fill in The Blanks:
Question 1.
The flat portion of leaf is called ______
Answer:
leaf blade
Question 2.
Leaf makes ______ for the plant.
Answer:
food
Question 3.
Leaves of spinach are used for making ______
Answer:
vegetable
Question 4.
Leaf of banana is very ______ in size.
Answer:
big.
III. Write True/False:
1. In olden times, books were written on leaves.
2. Banana leaves are used for making vegetable.
3. Spinach leaves are used for serving food.
4. Mint leaves are used for garnishing the food.
5. Neem leaves are used for garnishing the food.
Answer:
1. In olden times, books were written on leaves. (True)
2. Banana leaves are used for making vegetable. (False)
3. Spinach leaves are used for serving food. (False)
4. Mint leaves are used for garnishing the food. (True)
5. Neem leaves are used for garnishing the food. (False)
IV. Very Short Answer Questions.
Answer the following in one word:
Question 1.
Name a plant with oval leaf.
Answer:
Lotus
Question 2.
Name a plant with very large and long leaf.
Answer:
Banana
Question 3.
Neem leaves are used for protecting clothes from what?
Answer:
Insects
Question 4.
People in India generally grow which plant in their courtyard?
Answer:
Tulsi
Question 5.
Leaf of coriander is used for which purpose?
Answer:
Garnishing food
V. Short Answer Questions.
Question 1.
Why are leaves important for plants?
Answer:
Leaves play an important role in making food for plants. So, leaves are important for plants.
Question 2.
Why do plants shed their leaves?
Answer:
Plants shed their leaves when leaves are unable to perform their function. Plants also get rid of waste by shedding leaves.
Question 3.
Why do farmers make compost?
Answer:
Compost is very good for crops. So, farmers make compost.
VI. Picture Based Question
Question 1.
Label the following picture correctly
Answer:
1. Leaf blade
2. Vein
3. Midrib
4. Leaf stalk.
DAV Class 3 Science Chapter 3 Notes – Leaf
→ Leaf: The green coloured parts which are attached to the branches in a plant are called leaves. Leaf plays an important role in making food for the plant.
→ Parts of Leaf: The main parts of a leaf are: leaf blade, stalk, main vein and side vein.
→ Shapes of Leaf: Leaves come in different shapes, sizes, texture and aroma. Some leaves are oval, some are round and some are long. Some leaves are very big and some others are very small.
→ Uses of Leaf:
- In olden days, people used to write on leaves.
- In south India, banana leaves are used as plates for eating food.
- Neem leaves help to protect clothes and other items from insects.
- Leaves of Basil (Tulsi) are used for medicinal purposes.
- Leaves of coriander (dhania) and mint (pudina) are used for garnishing and adding flavour to the food.
- Leaves of mustard, spinach and methi are used for making vegetables.
→ Shedding of Leaves: Plants shed their leaves when the leaves become old and worn out. By shedding the leaves, plants also get rid of some harmful substances.
→ Compost: Fallen leaves can be turned into compost. For this, fallen leaves and kitchen waste are dumped in a pit and covered. After about one to two months, all the waste turns into compost. Compost is very useful for farmers. Compost helps the plants to grow better.