4 science assignment.docx · web viewleaves that contain stored food which you eat. _____ 2-plants...

NEW HORIZON SCHOOL

SESSION 2017-18

Worksheets Term - 1

CLASS IV

Subject: Science

Name : ………………………………………………….

Roll no. : ………………………………………………….

Class & Sec. : ………………………………………………….

Worksheet 1 Ch:1 (Green plants – Thefood producers)

Q.1. Write the functions of the following:

1- Chlorophyll

_________________________________________________________________________________________________________________________________________________________________________________________________________

2- Stomata

_________________________________________________________________________________________________________________________________________________________________________________________________________

Q.2. Answer the following in one word:

1- Food factory of a plant:_________________________________

2- Food prepared by a leaf:_________________________________

3- Plants that obtain their nutrition from dead and decaying plants and animals:________________________________

4- Tiny openings on the surface of the leaves:_________________________

Q.3. Define the following terms:

1- Saprophytic plants:

______________________________________________________________________________________________________________________________________

2- Photosynthesis:

_________________________________________________________________________________________________________________________________________________________________________________________________________

Q.4. Unscramble the given words.

(a) CHARTS:_____________________(b) LUDMOS:________________________(c) STORO:___________________________(d) RHPYSAPICTO:______________________

Q.5. Why mushrooms and moulds are known as saprophytic plants?

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Q.6. Give two examples of the following:

1- Leaves that contain stored food which you eat.

___________________________________________________________________

2- Plants having variegated leaves.

___________________________________________________________________

3- Plants lacking chlorophyll.

___________________________________________________________________

Q.7. Give an activity to test the presence of starch.

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Q.8. Draw the diagram of a leaf and label its parts:

Q.9. Fill in the blanks:

1- The green colour of leaves is due to the presence of _________________.

2- _________________ is the stored form of sugar.

3- Stomata help plants in _____________________________.

4- __________________ and ________________ do not contain chlorophyll.

5- The leaves of cactus are reduced to _______________ and cannot perform photosynthesis. The food is prepared by _____________________________.

Q.10. Identify the parts of a plant:

Worksheet 2Ch:2 (Adaptations for survival in plants)

Q.1. Define the following:

1- Adaptation

______________________________________________________________________________________________________________________________________

2- Habitat

______________________________________________________________________________________________________________________________________

Q.2. Differentiate between Deciduous and evergreen trees.

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Q.3. Give two examples of the following:

1- Plants that grow in plains:_______________________________________

2- Plants that grow in deserts:_______________________________________

3- Plants that grow on hills:_________________________________________

4- Plants that grow in marshy places:_________________________________

5- Plants that grow in coastal areas:__________________________________

6- Insectivorous plants:____________________________________________

7- Plants that do not contain chlorophyll:_____________________________

Q.4. Name the factors which influence the adaptations developed by plants.

____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Q.5. What are aquatic plants?

_________________________________________________________________________________________________________________________________________________________________________________________________________

Q.6. Complete the following web chart:

Q.7. Identify the following:

Worksheet 3Ch:3 (Reproduction in Animals)

Q.1. Define:

1- Reproduction:

______________________________________________________________________________________________________________________________________

2- Warm blooded animals:

______________________________________________________________________________________________________________________________________

3- Flippers:

______________________________________________________________________________________________________________________________________

4- Metamorphosis:

______________________________________________________________________________________________________________________________________

5- Amphibians:

______________________________________________________________________________________________________________________________________

Q.2. Answer the following in one word:

1- Frogs lay their eggs in large clusters:________________________

2- An organism at any time before hatching or birth:___________________

3- Animals that give birth to their young ones:_____________________

4- Process of change of a tadpole into an adult:_______________________

5- An egg of a frog develops into a fish like structure:____________________

Q.3. Give two examples of the following:

1- Mammals which give birth to their young ones:

______________________________ _______________________________

2- Animals that lay eggs:

______________________________ _______________________________

3- Amphibians:

______________________________ _______________________________

4- Reptiles:

______________________________ _______________________________

5- Mammals which do not give birth to their young ones:

______________________________ _______________________________

6- Aquatic animals:

______________________________ _______________________________

Q.4. Draw the structure of an egg and label its parts:

Q.5. Complete the given table:

S.No. Animals Young Ones

1. Cow

2. Horse

3. Sheep

4. Lion

Q.6. Label the following life cycle:

Worksheet 4 Ch:4 (Adaptations for survival in animals)

Q.1. Give three adaptations of the following:

1- Terrestrial animals:

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2- Amphibians:

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

3- Arboreal animals:

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Q.2. How are aerial animals adapted to their habitat?

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Q.3. Complete the web chart.

Q.4. Define the following:

1- Extinct animals:

_________________________________________________________________________________________________________________________________________________________________________________________________________

2- Blubber:

_________________________________________________________________________________________________________________________________________________________________________________________________________3- Hibernation:

_________________________________________________________________________________________________________________________________________________________________________________________________________

Classification of animals on the basis of food

Carnivores

____________________________________________________________________________________________

_______________________________________________________________________________________________________________________

_______________________________________________________________________________________________________________________

They have sucking tubes to suck blood from their host. Eg:Fleas, lice and mosquitoes.

4- Camouflaging:

_________________________________________________________________________________________________________________________________________________________________________________________________________

Q.5. Fill in the blanks:

1. Habitat provides food , ________________ and________________ which

an animal needs to survive.

2. Terrestrial animals have well-developed nervous system and __________

____________ which enable them to sense changes in their surroundings.

3. A snake has _____________ which help it to crawl.

4. A camel stores fat in its ____________ to survive scarcity of ___________

and water.

5. Moth caterpillar defends itself by ________________________ a snake.

Q.6. Complete the table:

S.No. Animals Breathing organs

1. Lion

2. Whale

3. Fish

4. Frog on land

5. Frog in water

6. Insects

Worksheet 5Ch:5 (More about Insects)

Q.1. Answer in one word:

1- Hard outer covering of insects:___________________________

2- Chest of an insect:_______________________________

3- A wingless insect:_______________________

4- Chemicals used to destroy pests:_________________________

5- Insects breathe through small openings in the exoskeleton:____________

6- Head of the insect’s colonies:______________________

Q.2. Fill in the blanks:

1- Insects have ____________________ eyes that have thousands of lenses.

2- ___________________ Provides necessary support and flexibility to the body of insects.

3- Insects use their antennae to detect ________________ , ______________ and sounds.

4- __________________ of an insect contains the heart , respiratory system, excretory system , digestive system and reproductive system.

5- The caterpillar spin cocoon around themselves called _______________.

Q.3. Label the body parts of an insect:

Q.4. Define Life cycle:

______________________________________________________________________________________________________________________________________

Q.5. Who am I?

_________________ __________________ _______________

Q.6. Label the stages of life cycle of a butterfly.

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Interesting books

Worksheet 6Ch:6 (Food and Nutrition)

Q.1. Define the following:

1- Nutrition:

_________________________________________________________________________________________________________________________________________________________________________________________________________

2- Balanced Diet:

_________________________________________________________________________________________________________________________________________________________________________________________________________

3- Nutrients:

_________________________________________________________________________________________________________________________________________________________________________________________________________

Q.2. Complete the table:

S.No. Nutrients Their sources Functions

1. Carbohydrates

2. Fats

3. Proteins

4. Vitamins and Minerals

5. Roughage

Q.3. Identify the type of nutrient in the given food items ad classify them as Energy-Giving food , Body-Building food and Protective food.

1. 2. 3.

____________________ ___________________ ___________________

____________________ ___________________ ___________________

4. 5. 6.

____________________ ___________________ ___________________

____________________ ___________________ ___________________

7. 8. 9.

____________________ ___________________ ___________________

____________________ ___________________ ___________________