Are you looking for DAV Books Solutions then you are in right place, we have discussed the detailed solution of Science class 4 book Chapter 4 Plants Around Us which is followed in all DAV School Solutions are given below with proper explanation. Solutions will help students in their examination preparation. Please bookmark our website for further updates!! All the Best !!
DAV CLASS 4 Science plants Around Us Question and Answer
A. Fill in the blanks.
1. Plants, growing on hills, are tall, straight and have a ____Conical_____shape.
2.Banyan and Mango are two of the trees that grows on plains.
3. Breathing roots are also called aerials roots.
4 Hydrilla is an underwater plant.
- Lotus stem is eaten as a Vegetable.
B. Match the following: (Answer)
1. evergreen trees- (e)Rubber and Teak
2. needle-like leaves:- (f) pine and cedar
3. no leaves (b)Cactus
4. breathing roots (c) mangrove
5. air filled cavities (d) aquatic plant
6. a cultivated crop (e) rubber and teak .._
C. Tick (V) the correct option.
- It is a, free-floating plant—(a) water hyacinth (b) hydrilla (c) coconut (d) lotus
- These are unwanted plants—(a) cactus (b) grass (c) mangroves (d)weeds
- It can survive in soil with very little water—(a) banyan (b) teak (c) rubber (d)Cactus
Answer the following in brief
1. What are terrestrial Plants?
Answer: Plant which grow on land are called terrestrial plants. Eg. Neem Bamboo,Ashok tree, pine tree etc.
2.How does the conical shape help the plants of hills?
The conical shape hilly trees does not allow snow to get deposited on them.
3.Name two trees growing in hot and wet regions.
Rubber and Teek tree
4.Name an underwater plant. What kind of leaves does it have?
Hydrilla is a plant that grows under water. It has pointed and strap kinds of leaves.
5.What is ploughing?
Ploughing is the process of breaking, loosening the soil, and turning it over for uprooting weeds and aerating the soil.
E. Answer the following questions.
1.List the different habitats of terrestrial plants.
Hills, Plains, Hot and Wet regions, marshy and desert
2.How is cactus plant able to grow in desert conditions?
Cactus plants can grow in desert conditions because it has no leaves, as a result, it doesn’t give up its water through evaporation also the roots of cactus are well developed so that it can take water from the deep ground.
3.What are aquatic plants? State their types and give two examples of each type.
Aquatic plants are plants that grow in water.
- Floating aquatic types
- Free Floating Plants Example Water Lettuce and Water Hyacinth
- Fixed aquatic plants Examples : Lotus and Water Lily
- Underwater Plants Example: Hydrilla and seaweed
4.What are cultivated plants?
Cultivated plants are those which are planted and grown. Example Sugarcane, Maize, Wheat, and rice cultivation can be done by sowing seeds.
5.Why should weeds be removed from the fields?
Weeds are removed from the soil because it is unwanted plants that take the nutrients of soil and make the soil nutrients low.
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