DAV Class 4 Science Chapter 4 Question Answer Plants Around Us

If you are looking for DAV Class 4 Science Chapter 4 Question Answer Plants Around Us of My Living World science book, then you are at the right place. Here at NCERTBooksPDF, Class 4 Science Chapter 4 exercises are solved with accurate, child-friendly explanations, clear classification tables, and complete solutions to help DAV students score top marks in their exams.

Table of Contents

• DAV Class 4 Science Chapter 4 Plants Around Us Solutions
• A. Fill in the Blanks
• B. Match the Following
• C. Tick the Correct Option
• D. Answer the Following Questions in Brief
• E. Answer the Following Questions (Detailed Explanations)
• Value-Based Questions
• Something to Do

DAV Class 4 Science Chapter 4 Plants Around Us Solutions

DAV Class 4 Science Chapter 4 Plants Around Us covers terrestrial plant habitats (hills, plains, deserts, marshy areas), aquatic plant adaptations (floating, fixed, submerged), cultivated crops, and weeding. Below are the complete textbook solutions.

A. Fill in the blanks.

1. Plants, growing on hills, are tall, straight and have a conical shape.
2. Neem and banyan are two of the trees that grow on plains.
3. Breathing roots are also called aerial roots.
4. Hydrilla is an underwater plant.
5. Lotus stem is eaten as a vegetable (kamal kakri).

Answer: (1) conical  |  (2) Neem, banyan  |  (3) aerial  |  (4) Hydrilla  |  (5) vegetable

B. Match the following:

Answer: (1) e, (2) f, (3) b, (4) c, (5) d, (6) a

C. Tick (✓) the correct option.

1. It is a free floating plant—
(a) water hyacinth
(b) hydrilla
(c) coconut
(d) lotus

Answer: (a) water hyacinth
Explanation: Water hyacinth has spongy, air-filled swollen stems that keep it light and freely floating on water surfaces.

2. These are unwanted plants—
(a) cactus
(b) grass
(c) mangroves
(d) weeds

Answer: (d) weeds
Explanation: Weeds are undesirable, wild plants that grow naturally alongside cultivated crops and rob them of essential nutrients.

3. It can survive in soil with very little water—
(a) banyan
(b) teak
(c) pine
(d) cactus

Answer: (d) cactus
Explanation: Cactus is adapted to desert climates with fleshy water-storing green stems and spines that prevent transpiration.

D. Answer the following questions in brief.

1. What are terrestrial plants?
Answer: Plants that grow on land (such as in plains, hills, deserts, and marshy coasts) are called terrestrial plants (e.g., mango, pine, cactus).

2. How does the conical shape help the plants of hills?
Answer: The conical shape and downward sloping branches allow snow, frost, and heavy rainwater to easily slide off without breaking the branches or freezing the leaves.

3. Name two trees growing in hot and wet regions.
Answer: Teak and Rubber (or coconut).

4. Name an underwater plant. What kind of leaves does it have?
Answer: Hydrilla is an underwater plant. It has narrow, pointed, and strap-like leaves that can flex easily with water currents without tearing.

5. What is ploughing?
Answer: The agricultural process of digging, loosening, and turning the soil to make it soft and well-aerated before sowing seeds is called ploughing.

E. Answer the following questions.

1. List the different habitats of terrestrial plants.
Answer: The main habitats of terrestrial plants are:

1. Hills and Mountains (Cold Climates): Pine, Deodar, Cedar, Fir.
2. Plains (Moderate Climates): Neem, Peepal, Banyan, Mango, Sheesham.
3. Hot and Wet Regions (Humid Climates): Rubber, Teak, Coconut.
4. Deserts (Hot and Dry Climates): Cactus, Babool, Date Palm.
5. Marshy Areas (Swampy Wetland): Mangroves.

2. How is cactus plant able to grow in desert conditions?
Answer: Cactus survives in harsh, dry desert conditions due to the following special adaptations:

1. Leaves Modified into Spines: Spines minimize water loss through transpiration and defend the plant against grazing animals.
2. Fleshy Green Stem: Its thick, green stem performs photosynthesis and stores large reserves of water.
3. Deep and Spreading Roots: Its root network spreads wide and deep beneath the sand to rapidly absorb moisture from rare showers.

3. What are aquatic plants? State their types and give two examples of each type.
Answer: Plants that live and grow in water are called aquatic plants. They are divided into three types:

4. What are cultivated plants?
Answer: Plants that are grown deliberately by humans on a large scale in agricultural fields or gardens for food, fiber, or commerce are called cultivated plants (e.g., wheat, rice, maize, cotton, sugarcane).

5. Why should weeds be removed from the fields?
Answer: Weeds are undesirable wild plants that compete fiercely with crop plants for water, soil nutrients, fertilizers, space, and sunlight. If not weeded out, they stifle the growth of the cultivated crops and significantly reduce harvest yields.

Value-Based Questions

During his vacation, Ramesh went to his grandparents’ village. He saw his old and weak grandfather ploughing the fields with the help of bullocks. Ramesh felt very sad. In the evening he rang up his father and told him about it. After a few days, his father came to the village with a person from the bank. The bank offered easy loans to farmers to buy tractors. After a month, Ramesh’s grandfather bought a new tractor. He was very happy.

1. How do we know that Ramesh is a very caring boy?
Answer: Ramesh showed empathy and deep concern when he noticed his elderly grandfather straining under harsh physical labor. Instead of ignoring it, he immediately contacted his father to find a practical and modern solution.

2. What kind of man is Ramesh’s father?
Answer: Ramesh’s father is a dutiful, caring, and practical person who respects his elders. He utilized modern banking facilities to ease his father’s hard work in the fields.

3. How can you help your grandparents?
Answer:

1. Spend quality time with them, listening to their life stories and reading books or news to them.
2. Assist them with daily tasks such as serving water, fetching their glasses, or organizing their medicines.
3. Accompany them on walks and assist them patiently with mobile phones and technology.

Something to Do

1. Tree Identification: Observe trees growing in your school playground. Classify them into trees of plains (like neem, banyan, gulmohar) or ornamental shrubs.

2. Habitat Chart: Create a chart classifying plants into Terrestrial (Hills, Plains, Deserts, Marshes) and Aquatic (Floating, Fixed, Submerged) with neat sketches or pictures.

Related Chapters:

• DAV Class 4 Science Solutions (All Chapters)
• DAV Class 4 Science Chapter 3 Flowers and Fruits
• DAV Class 4 Science Chapter 5 Birds—Beaks and Claws