Forests : Our Lifeline

Reason- Forests serve as green lungs because they release oxygen, which is used by us for respiration.

Reason- Because the birds and animals make noises to alert other animals in the forests.

Reason- Fox, Boar and Bison are comparatively larger in size than porcupine.

This is a picture of porcupine.

Reason- A tree has the most thick and strongest stem in comparison to a creeper, a climber and a bush.

Reason- Thermocol is prepared from plastic.

Reason- Porcupine is the name of a forest animal.

Reason- Semal is a plant and Hornbill is a bird (animal). Sal and khair is both tree. Chinkara and blue bull are both animals. Neem and palash are both trees.

This is a picture of semal tree. This is a picture showing

Hornbill bird.

Reason- Ginger is actually a type of a root, rhizome.

This is a photograph showing ginger as a type of root.

Reason- Canopy is the arrangement when branch of one tree fells over the other tree. Sapling is the earliest stage of plant growth, short in height. Dead plants and plants and animal tissue is converted into a dark coloured substance called humus by the micro-organisms.

Reason- Trees help in getting rid of flood as they absorb all the rainwater.

This is because the noise from the vehicles is absorbed by the trees. This is how the trees help in overcoming the noise pollution.

(a) True

Reason- Forests keep a check on climate, water cycle and air quality. Forests maintain the climate and water cycle through rain and air quality by maintaining the carbon dioxide and oxygen level in the environment.

(b) False.

In a forest, trees form the uppermost layer, followed by shrubs. The herbs form the lowest layer of vegetation.

Reason- Herbs are smaller than shrubs.

This is a picture showing difference in the height of herbs, shrubs and trees.

(c) True

Reason- The forest keeps on changing as the climate conditions changes. New plants are grown by the seed dispersed by animals or air.

(d) True

Reason- The forest helps in prevention of soil erosion as the roots bind to the soil and hence does not allow the removal of the top layer of soil.

Grass → insects → frog → snake → eagle.

Owl, woodpecker, Eagle, Peacock are the birds that we can expect to see in a forest.

No, they would have not seen the same type of plants and animals during their respective trips because different climatic conditions give rise to different plants. Animals are habited to environment conditions that suit them. For example- A camel is only found in the desert.

But if two forests are not very far from each other than the plant species may have been same.

The animal dung provides nutrients to the seedlings. The essential nutrients required for the growth of plant is readily absorbed from the animal dung. Animal dung is rich in elements like nitrogen.

(a) Decomposers- (iii) micro-organisms

Reason- Micro- organisms are known as decomposers because they decompose on the dead and decay matter.

(b) Canopy- (v) branches of tall trees

Reason- Branches of tall tree over the other tree is known as canopy.

(c) Porcupine- (iv) wild animal

Reason- Porcupine is a wild animal found in the forests

(d)Humus- (i) dead plants and animal tissue

Reason- Dead plants and animal tissue is decomposed by the micro-organism into a dark- coloured substance called as Humus.

(e) Forest- Habitats for wild life

Reason- Forest is a home for wild animals as well as trees

Continuous cutting of trees is known as deforestation. The roots of the trees help in binding the soil together. Trees absorb the rainwater and allow it to enter the soil, thus maintaining the water table also. In the absence of tree, rainwater leads to flood. And, as no trees are present, therefore, they easily remove the top layer of the soil causing soil erosion.

four useful products which we get from forests are:

1. Gums

2. Oils

3. Matchsticks

4. Medicinal plants

Three activities going on in the forest are:

1. Carbon dioxide in the air is used by the absorbed by the trees.

2. Oxygen is being released by the trees in the air, which is used by the animals for respiration.

3. Decomposers act on the dead plant and animal tissues and convert it into rich humus content.

The dead plants and animal tissue is converted into humus, a black coloured substance, by the micro-organism. This humus is rich in the nutrients. The humus ensures that it gets readily mixed with the soil, so that it could be absorbed by the roots of the plants. The dead animals are eaten by the eagles, hawks and vultures.

That is why, it is said that nothing goes waste in a forest.

Four factors which are responsible for the destruction of forests are:

1. For agricultural purposes.

2. For the construction of roads and buildings.

3. To make items such as paper, plywood, etc.

4. To make factories or companies at the place of forests

1. Forests provide animals with food to eat.

2. Forests provide animals with water to drink.

3. Forest serve as a home to a large number of animals, thus providing them with shelter.

All the basic needs of the animal living is fulfilled by the forest.

1. They provide us with oxygen to breathe.

2. They provide us with food to eat.

3. They provide us with wood to make paper, matchsticks, etc.

4. They provide us with medicinal plants.

5. They provide us with gums, oils and spices.