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Food: 2 Marks
Microorganisms feed upon dead plants and animal tissues and convert them into a dark coloured substance called humus.

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Products: 3Marks
We obtain a lot of products from trees, including:
1. Latex, gum, and resins.
2. Paper.
3. Wood.
4. Fruits and vegetables.
5. Medicinal products.
6. Lac products from lac insects that live on trees.

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Entire explanation: 5Marks
In forests, plants produce food. All animals, whether herbivores or carnivores, depend ultimately on plants for food.
Organisms which feed on plants often get eaten by other organisms, and so on.
For example, grass is eaten by insects, which in turn, areeatenby the frogs. Frogs areconsumed by snakes and snakes are eaten up by eagles.This is said to form a food chain:
Grass→ insects→ frogs→ snakes→ eagles.
Decomposers also play an important role in the forest. They feed upon dead plants and animal tissues and convert them into a dark coloured substancecalled humus.
For example: Fungi grow on decaying fruits and vegetables and convert them into humus.
By harbouring greater variety of plants, the forests providegood opportunities for food and habitat for the herbivores and carnivores. The wide variety of animals helps the forest to regenerate and grow. Thus forest is the dynamic living entity that is full of life and vitality.

Answer: Option B. -> False
:
B
Water cycledepends on the number of trees.Forests helpin bringing a good amount of rainfall. Theyact as natural absorbers of rainwater and allowit to seep through the groundwhichhelps in maintaining the water table.

Answer: Option D. -> Plastic
:
D
Aforest productis any material derived fromforests which is usedfor direct consumption or commercial use.Henna dye, rubber and spicesare all forest products. Whereas, plastic is processed from chemicals and is not a forest product.

Answer: Option A. -> True
:
A
Plants take up carbon dioxide exhaled by animals and release oxygen inhaled by animals. Thus, forests maintain a balance between the two gases in atmosphere. Deforestation disturbs this balance and increases the amount of carbon dioxide in atmosphere.

Answer: Option D. -> Forests degrades the land.
:
D
Forests keep the surrounding air cool and help in bringing rain. Roots of trees hold the soil strongly. This prevents the soil from getting eroded by wind or water. Due to the presence of forest, the overall quality of land improves.

Answer: Option B. -> soil
:
B
The decayed leaves and animal droppings in a forest act as manure for soil and thus improves its quality.

Answer: Option D. -> Diesel
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D
Forests are a source of livelihood for humans and animals. They provide us with timber, medicinal plants, and also fruits and vegetables. Diesel on the other hand, is not obtained from the forests. It is extracted from petroleum or crude oil which is found deep under the surface of the Earth.

Answer: Option B. -> Mushroom
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B
Fungi like mushrooms, mildew, mold, etc., release enzymes that decompose dead plants and animals. They feed on these organisms and absorb nutrients from them.