Subject :- E.V.S Revision Question Answer and Give Reason

E.V.S   Q-1  Answer the following:-

Q1.In which direction do the leaves of cold region plants point?  Why?

Ans- The leaves of cold region plants slope downwards for the snow to slide off easily.

Q2.What is Chatri?

Ans: A shrub growing in the rain forest.

Q3.Why does the lotus remain fixed in the water?

Ans: As it has its roots planted in the soil under water.

Q4.What is Photosynthesis?

Ans: The process of making food in green plants using sunlight, carbon dioxide and water is called photosynthesis.

Q5. Name any three leaves of plants having special fragrance.

Ans: Tea, tulsi and lemon.

Q6. List some uses of leaves.

No. Name of the leaf Uses

1. Spinach Used as food

2. Coconut palm and date palm Used as Roof of the huts

3. Neem and Tulsi Medicines

4. Banana leaf Serving food

5. Mango Leaves Considered auspicious

6. Betel leaves Making paan

7. Mehndi leaves To colour hair

7. What is a Herbarium?

Ans: Herbarium is a collection of dried plants mounted, labelled, and systematically arranged for use in scientific study.

8.In which direction does the Earth rotate?

Ans: The Earth rotates from west to east.

 9.How does day and night occur on Earth?

Ans: The part that faces the Sun has day time and opposite side has night time.

10. How many days does the Earth take to complete one revolution?

Ans: About 365 days and 6 hours.

 11.Name the only living planet in our solar system.

Ans: The Earth is the only living planet.

 12. When does leap year come and at that time which month had more number of days? 

 Ans Every fourth year is a leap year and only February has one more day added. i.e 29 days.

 13. Name the main four seasons.

Ans: Spring, Summer, Autumn and Winter. 

 14.What are the two hemispheres formed on dividing the Earth horizontally? 

Ans: Northern Hemisphere and southern hemispheres. 

 15.  What is culture?

A. The beliefs, customs, arts, etc. of a particular society, group, place or time is called culture.

 16. Name the different religions followed in India.

A. Indians follow different religions in India. Some of them are Hinduism, Islam, Christianity, Sikhism, Jainism, Buddhism, Judaism and Zoroastrianism.

17. List the food items in different regions of India with examples.

A.

S.No.	Regions of India	Famous food items
1	North India	Lentils, dairy products
2	South India	Idli, medu vada, pongal,  dosa,payasam,sambhar,rasam.
3	West India	Dhokla, handva, undhiyu, dal-baati, churma.
4	East and Northeast of India	Rice, fish-curry, thupka , momos, rosogulla.

 18. Name the traditional clothes worn by Indian women.

A. Sarees, salwar kameez and ghagra choli are the traditional clothes worn by Indian women.

19. What is Saree?

A5. Saree is a six to nine meters of unstitched cloth, worn in various styles by Indian women.

 20. What is Angavastra?

A6. Angavastra is a long piece of cloth draped around the shoulders by the men.

 21. What is a Pagri?

0A7. A Pagri is a long plain unstitched cloth tied to the head and worn by men.

22.  Define:

a. Energy : The ability to do work.

b. Solar energy : The energy that we get from the sun in the form of sunlight(light and heat).

 23.  Why do we need energy?

Ans. We need energy to perform day to day activities.

 24.  List any 3 examples that uses energy.

Ans. Energy is required for playing, swimming, dancing etc.

 25.  How do the plants make their food?

Ans. Plants make their own food with the help of chlorophyll in leaves, air , water and in the presence of sunlight.

 26.  What happens when the wind blows?

Ans. When the wind blows it causes energy to move around and make objects move. e.g.: Trees swaying

27.  Where do the vehicles get their energy from?

Ans. The vehicles get their energy from the fuels such as petrol, diesel, gas etc.

 28.  Name the main sources of energy.

Ans. The sun, water, wind, food and fuels such as petrol, diesel, gas  are the main sources of energy.

 29.  How do we get energy?

Ans. We get energy from healthy and nutritious food.

 30.  Name the source of energy used in factories to produce goods.

Ans. Electricity is the source of energy used in factories to produce goods.

31. What are symbols?

A) Symbols are signs or indications used to represent an object, function or process.

 32. What is the importance of national symbols?

Ans) National symbols give us a feeling of respect and patriotism for our country.

 33. Which book has our National song ‘Vande Mataram’ as a part of it?

Ans: Our National song ‘Vande Mataram’ is a part of the book ‘Anand math’ written by Bankim Chandra Chatterji.

 34.Describe our National emblem.

Ans : Our National Emblem has three lions standing back to back. The lions are standing on a platform which has the Ashoka Chakra in the centre, a horse on the left and a bull on the right. Underneath the emblem the words “Satyameva Jayate” are written in Devnagri script.

 35. What is the meaning of ‘Satyamev Jayate’?

Ans: ‘Satyamev Jayate’ means Truth alone triumphs.

 36. Who composed our National Anthem “Jana Gana Mana” ?

Ans) The Original song of “Jana Gana Mana “ was composed in Bengali by Rabindranath Tagore.

 37. On which specific occasions do we sing the National Anthem and what time is taken to play the National Anthem?

Ans) The National Anthem is sung on specific occasions such as flag hoisting and parades. It is played for 52 seconds.

 38 Who was the first President of India?

Ans  Dr. Rajendra Prasad

 QII. Give reasons:-

1. When a leaf falls from a tree or a plant, it loses its color in a few days

Ans: A leaf that has fallen of a tree cannot make its own food. It loses its chlorophyll and hence it loses its color in a few days.

2.Plants such as cactus show no leaves or very less number of leaves.

Ans: Cactus have no leaves because the leaves have turned into spines which reduces the loss of water from its surface.

3. All types of plants are not found in all regions.

Ans:-All types of plants are not found in all regions because of:

a) Differences in climatic conditions

b) Soil types

4.The Earth stops its rotation as well as revolution.

Ans.   If   the Earth stops rotating and revolving, then one side of the Earth would heat up while the other side would be cold. Thus one side of the Earth will experience only day while the other side will experience only night throughout the year. There will be no change in the seasons too. Hence it will become difficult for the living being to survive.

5. India is a land of unity in diversity.

A1. . People of different religions, castes, languages, cultures, lifestyle, dressing sense, faith in God, rituals of worship, etc live together and respect each other and celebrate all festivals together with love and feeling of brotherhood.

6. Energy is very special.

Ans – Energy is special as it makes our lives easy and our world lively and unique. It helps us to do all our work. So we should use it effectively and conserve it. Energy should never be wasted.

 7. The sun is an important source of energy.

Ans. Life will not exist on the earth without the sun. We will not be able to see things around us, we will not feel warmth/heat . The sun is the important source of energy as it provides us energy in the form of light and heat.