Rafi and Vasu want to make a list of things that are directly or indirectly related to soil. Help them with their list. Si.No. Things directly related to soil Things indirectly related to soil 1 Pot Wooden chair 2 3 4 5

Si.No. Things directly related to soil Things indirectly related to soil 1 Pot Wooden chair 2 Minerals: Minerals like gold, silver Humans: They depend, on cereals, fruits, vegetables, etc. that are obtained from the soil. 3 Water: The presence of water in soil supports for survival of living things Photosynthesis : Plants prepare their food using water from the soil. 4 Microorganisms: Decomposers present in the soil decompose dead and decaying plant and animal matter. Birds: They depend on fruits, seeds, etc. from soil. 5 Nitrogen: Nitrates required for plant growth are prepared in the soil. Animals: For grazing, they depend on grass.

Match the following. There are no roots. Yellow leaves Presence of small plants. Mosses Sign of plant diseases. Aloe Vera

1. There are no roots: Mosses. Bryophytes have no roots, leaves, and stems. They are flowerless plants. 2. Presence of small plants: Aloe Vera. They enjoy the sun and prefer that soil is dry inbetween watering. 3. Sign of plant diseases: Yellow leaves. A sign of plant disease is physical evidence of pathogen. Most plant diseases are caused due to fungus or fungal-like diseases There are no roots. Mosses Presence of small plants. Aloe Vera Signs of plant disease. Yellow leaves

Match the following. 1. Worms that have no legs. Spiders 2. Larvae of insects. Hardshell 3. Snails Arthropods 4. Insects with three pairs of jointed legs. Earthworms 5. Insects with four pairs of legs. Caterpillar

1. Worms that have no legs: Earthworms. They are found in the upper layer of the soil and improve soil fertility. They feed on the dead and decaying matter present in the soil. 2. Larvae of insects: Caterpillar. The larvae are also known as caterpillar hatches out from the egg and grows in size. It secretes fibre made of protein that hardens on exposure to air and becomes silk fibre. 3.Snails: shell. Their shells are used as decorative objects and are incorporated in jewellery. 4. Insects with three pairs of jointed legs: Arthropods. Insects are arthropods that have three body segments, three pairs of legs, one pair of antennae, and many have one or two pairs of wings. 5. Insects with four pairs of legs: Spiders. They are air breathing arthropods that have eight legs. 1. Worms that have no legs. Earthworms 2. Larvae of insects. Caterpillar 3.Snails Shell 4. Insects with three pairs of jointed legs. Arthropods 5. Insects with four pairs of legs. Spiders

E M B I B E

Science Class VII>Chapter 15 - Soil - Our Life>EXERCISE>Q ●

EASY

7th Andhra Pradesh Board

IMPORTANT

Earn 100

Can we say soil is one of the most important resources like water and air? Why?

Important Questions on Soil - Our Life

EASY

7th Andhra Pradesh Board

IMPORTANT

Science Class VII>Chapter 15 - Soil - Our Life>EXERCISE>Q 1

Rafi and Vasu want to make a list of things that are directly or indirectly related to soil. Help them with their list.

Si.No.	Things directly related to soil	Things indirectly related to soil
1	Pot	Wooden chair
2
3
4
5

EASY

7th Andhra Pradesh Board

IMPORTANT

Science Class VII>Chapter 15 - Soil - Our Life>EXERCISE>Q 2

Match the following.

There are no roots.	Yellow leaves
Presence of small plants.	Mosses
Sign of plant diseases.	Aloe Vera

MEDIUM

7th Andhra Pradesh Board

IMPORTANT

Science Class VII>Chapter 15 - Soil - Our Life>EXERCISE>Q 3

Match the following.

1. Worms that have no legs.	Spiders
2. Larvae of insects.	Hardshell
3. Snails	Arthropods
4. Insects with three pairs of jointed legs.	Earthworms
5. Insects with four pairs of legs.	Caterpillar