Science Revision – 1
1. Which sense are these people using?
Ans.
i) Eyes
ii) Skin
iii) Smell
iv) Hear
2. Rewrite the following sentences correctly: –
a) I hear the birds chirping with my eyes.
View AnswerAns. I hear the birds chirping with my ears.
b) Flowers store seeds in it.
View AnswerAns. Fruit store seeds in it.
c) We can find out the colour of a flower by just touching it.
View AnswerAns. We can find out the colour of a flower by seeing it.
d) Grapes and money plant are example of herbs.
View AnswerAns. Grapes and money plant are example of climbers
3. Look at the figure and answer the following questions: –
a) Name the part marked with an arrow.
View AnswerAns. Roots
b) What does this part do for the plant?
View AnswerAns. It fixes the plant in the soil.
4. Answer the following questions: –
a) Why do some plants creep on the ground?
View AnswerAns. Some plants creep on the ground because their stem is thin and weak.
b) Why should we meditate and exercise regularly?
View AnswerAns. We should meditate regularly to keep ourself calm and peaceful.
We should exercise regularly to keep ourself healthy and fit.
c) Name the green substance present in leaves and also write its function.
View AnswerAns. The green substance present in leaves is called chlorophyll. It helps the plant to prepare its food.
d) Name the largest organ of our body.
View AnswerAns. Skin is the largest organ of our body.
e) What is the average length of human tongue?
View AnswerAns. The average length of the human tongue is 10 cm.
5. Write any three features of tree.
Ans. Features of trees are: –
i) Trees are big plants
ii) Trees stem is woody and strong. It is also known as Trunk
iii) Tree live for several years.
6. Differentiate between the following: –
1. Money plant and Strawberry
View AnswerAns.
2. Sense of touch and sense of taste
View AnswerAns.
Science Revision – 2
1. Read the passage and answer the following questions: –
Plants are a very important kind of life. Plants are very useful in many ways like it gives us food in the form of fruits, vegetables, pulses and grains. We get wood, paper, rubber, cotton, oil, spices and many other things. It gives us something very important for all living things that is oxygen gas we all need for breathing. Some plants like tulsi, neem, ginger and garlic are used to make medicine. Plants bind the soil with the help of their roots. We can now understand that plants are a very important gift of nature, we must take care of it. If we have to survive on earth, we must protect the plants.
a) Name two medicinal plants.
View AnswerAns. Neem and tulsi
b) In which form do we get food from the plants?
View AnswerAns. We get food from the plants in the form of fruits, vegetables, pulses and grains.
c) Name the gas that we need for breathing.
View AnswerAns. The gas we need for breathing is oxygen.
d) How do plants help the soil?
View AnswerAns. Plants bind the soil with the help their roots.
2. Tick the picture that belong to your compost bin and draw lines to connect them in the bin.
Ans. leaves, strawberry, apple, lemon, watermelon
3. Write in word: –
a) The leaf helps to protect clothes from insect__________________.
View AnswerAns. Neem leaves
b) The leaf helps to cure diarrhoea _____________________________.
View AnswerAns. Curry leaves
c) Planting of new trees in a large scale is called___________________
View AnswerAns. Afforestation
d) Cutting down of trees in a large number is called___________________.
View AnswerAns. Deforestation
e) The leaf helps to cure cough and cold____________________________.
View AnswerAns. Tulsi leaves
4. a) Which plant is considered herb?
View AnswerAns. Herbs have thin stems which are green in colour and are not woody. They are generally small in size. They live for one or two seasons only. Ex tomato, mint and ladyfinger.
b) What type of stem do herbs have?
View AnswerAns. Herbs have thin stems which are green in colour and are not woody.
5. Draw a) a leaf which is used as a plate for eating food.
b) any one article where one can find leaf design.
View AnswerAns.
Science Revision – 3
1. Fill in the space with the words from the tree below: –
A _________________ is a place where plants and animals live. Habitat are places like plains, water, forest and __________________. Animals and plants have adapted to their different habitats. Frogs need water for laying their ______________. Camels can go for a week without___________ making life in the desert easier. Polar bears have ________________________ to protect their bodies from cold. Turtles have _______________ for swimming.
View AnswerAns. A habitat is a place where plants and animals live. Habitat are places like plains, water, forest and desert. Animals and plants have adapted to their different habitats. Frogs need water for laying their eggs. Camels can go for a week without water making life in the desert easier. Polar bears have thick fur to protect their bodies from cold. Turtles have flippers for swimming.
2. Define the following: –
a) Terrestrial animals
View AnswerAns. Animals living on land are called terrestrial animals.
b) Flippers
View AnswerAns. Flippers are used by turtles for swimming.
c) Aquatic animals
View AnswerAns. Animals living in water are called aquatic animals. These animals have fins for swimming and gills for breathing.
d) Sense organs
View AnswerAns. Body organs which help to sense various things present around us are known as sense organs.
3. Difference between the following: –
Frog and Turtle
View AnswerAns.
4. Complete the web chart: –
Ans.
5. What is leaf?
View AnswerAns. The green coloured parts, attached to the branches, are seen in all the plants. Each of these green part is known as a leaf of the plant.