Lesson: Forests: Our Lifeline
Which of the following serve as green lungs?
(a) Green pigment of the plants
(c) Kitchen gardens
(d) Green house gases
Boojho visited a forest near his town with his classmates and his teacher. As they were entering the forest, their class teacher told them not to make noise in the forest as noise could disturb the
(c) Both birds and animals
Which among the following forest animals is the smallest?
Which of the following has the strongest stem?
(a) A tree
(b) A creeper
(c) A climber
(d) A bush
Which of the following is not prepared from the wood obtained from forest?
Which of the following is not the name of a tree?
Pick the option which gives the names of a tree and an animal, respectively from the following.
(a) Semal, hornbill
(b) Sal, khair
(c) Chinkara, blue bull
(d) Neem, palash
Which of the products is not obtained from a forest?
The branchy part of a tree above the stem is known as:
Forests are not responsible for:
(a) Providing medicinal plants.
(b) Maintaining the flow of water into the streams.
(c) Creating flood conditions.
(d) Absorbing rainwater and maintaining water table.
Paheli while moving in a forest observed that there was no noise pollution, though lots of heavy vehicles were passing from the nearby highway. Explain why?
The dense vegetation in the forest absorbed the sound.
State whether the following statements are true or false. If false, give the correct statement.
(a) Forests influence climate, water cycle and air quality.
(b) In a forest, trees form the uppermost layer, followed by herbs. The shrubs form the lowest layer of vegetation.
(c) The forest keeps on growing and changing and can regenerate.
(d) Forests protect the soil from erosion.
(b) False. The uppermost layer is formed by the trees, followed by shrubs, and lastly come the herbs.
Paheli wrote a food chain in the following way:
Frog → eagle → insects → grass → snake
The chain is not in the correct order. Help her to write the food chain correctly.
grass → insects → frog → snake → eagle
Give names of any four birds which you expect to see in a forest.
Myna, jungle crow, kingfisher, and dove
Two friends shared their experiences of their vacation trip to two different forests. Do you think they would have seen the same type of plants and animals during their respective trips? Give reason.
They would have seen different types of plants and animals in two different forests. This is because the two forests owing to different locations would have different climatic conditions resulting in different types of plants and animals.
“A bunch of seedlings were seen sprouting on a heap of animal dropping in a forest.” How do you think is the seedling benefited from the animal dung?
The animal dung acted as manure and provided nutrients to the seedlings, thus helping in their growth and development.
Match Column I with Column II.
Deforestation may lead to floods. Why?
Deforestation is cutting down of trees, which results in lesser number of trees in the environment. The roots of the trees penetrate deep into the soil and make space between the space particles. This allows the rainwater to get in instead of running along the surface.
In the absence of trees, there will be no absorption of water into the soil which will lead to floods.
Name any four useful products other than wood, which we get from forests.
Resins, oils, honey, and medicinal plants.
The figure below shows a part of a forest.
Write any three activities going on in the forest on the basis of this figure.
i. Oxygen is released by leaves during photosynthesis.
ii. Carbon dioxide is absorbed by the plants in order to prepare their food by photosynthesis.
iii. Roots of plants absorb water from the soil which reaches the leaves and is necessary for photosynthesis
iv. Decomposers in the soil play an important role in decomposing the dead plants and animals and providing nutrients for plants.
People say that nothing goes waste in a forest. Can you explain, how?
Dead plant and animal remains are converted by decomposers into humus, which in turn acts as manure and provides nutrients to the plants. Dead animals also act as food for the scavengers. Broken or dead branches are used by people living near forests as fuel. So, nothing of a forest product goes waste in a forest.
Give any four factors which are responsible for the destruction of forests.
(i) Building roads inside a forest.
(ii) Constructing buildings inside a forest.
(iii) Rapid and unplanned industrial development in and around forested areas.
(iv) The rise in demand of wood as cheap fuel for the poor.
Draw a figure showing two animals, two birds and a few trees as a part of a forest.
All the needs of animals living in a forest are fulfilled. Justify this statement in a few sentences.
The needs of animals living in a forest are all fulfilled, as a forest provides food, shelter, and water to all the animals living inside it.
“Forests are our lifeline.” Write five sentences on this topic.
Forests are the lifelines for all living beings. The reasons are:
i. Forests serve as a habitat for a large number of animals as well as different human settlements.
ii. Around 2 billion people across the world depend upon forests for shelter, livelihoods, water and food.
iii. Forests provide us with oxygen and absorb carbon dioxide to keep the environment cool.
iv. Forests help in bringing good rainfall in neighbouring areas and also protect the soil.
v. Forests are source of medicinal plants, timber and many other useful products.