Forests: Our Lifeline

Forests are called-

1. Terrestrial lungs
2. Mammalian lungs
3. Green lungs
4. Blue lungs

The temperature increases due to-

1. Decrease in the amount of CO2
2. Increase in the amount of CO2
3. Increase in the amount of O2
4. Increase in the amount of sunlight

In forests, __________ help in maintaining the supply of nutrients for growing plants.

1. producers
2. decomposers
3. animals
4. carnivores

What is the difference between canopy and understorey?

1. Understorey is present below the canopy
2. Canopy is present below the understorey
3. There is no difference. Both canopy and understorey lie at the same level
4. Canopy is the other name of understorey

Forests near villages are on the verge of disappearing due to

1. Over grazing of animals
2. Indiscriminate felling of trees
3. Construction of roads and building
4. Many other factors besides all these

Forest is a dynamic living entity as it keeps on growing

1. Animals disperse seeds of certain plants
2. Decaying animal dung also provide nutrients to seedlings to grow
3. Wide variety of animals help the forest to regenerate and grow
4. All of these

Water in liquid state evaporates to vapour state; Plants help to maintain the water cycle by

1. Retaining water
2. Not allowing water to evaporate
3. Absorb water from the soil through their roots and release water vapour into the air by evaporation through the leaves
4. All of these

Forests are called the green lungs because

1. Plants release oxygen through the process of photosynthesis
2. Plants help to provide oxygen for animal respiration
3. Maintain balance of oxygen and carbon dioxide in the atmosphere
4. All of these

Nutrients are received

1. By the humus from the dead plants and animals
2. By the soil from humus
3. By the roots of living plants from the soil
4. All of these

Decomposers are those organisms that

1. Feed on dead and decaying matter
2. Feed on living plants
3. Feed on living animals
4. Convert dead plants and animal tissues to humus

Plant, soil and decomposers in a forest are _________________.

1. Inter related
2. Dependant on each other
3. Inter related and dependant on each other
4. Sharing the same food

There are many food chains operating in forests. Each food chain tells

1. The eating habits of an organism
2. Which organism feeds on which organism
3. Habitat of an organism
4. None of these

The decaying matter is normally

1. Spongy
2. Warm
3. Moist
4. Warm and moist with a spongy feel to walk on

The forest floor is usually covered with a layer of

1. Dead animals
2. Dead and decaying leaves, fruits, seeds, twigs and small herbs
3. Water
4. Green grass

Different forests have different types of trees, plants and animals due to different climatic conditions. Do you agree with this statement?

1. It is not always true
2. Yes
3. No
4. It is not because of different climatic conditions

The under storeys have

1. Giant and tall trees constituting the top layer
2. Shrubs and tall grasses forming the middle layer
3. Herbs forming the lowest layer
4. All of these

Under storeys are the

1. Roots of the plants
2. Stems of the plants
3. Different horizontal layers formed by the crowns of different types and sizes
4. None of these

Branches of tall trees looking like a roof over the other plants in the forests are known as

1. Canopy
2. Root
3. Shoot
4. Crown

Branchy part above the stem of a tree is known as

1. Canopy
2. Crown
3. Shoot
4. Root

Plants and trees grow in forests because

1. The trees produce enough seeds
2. The forest floor provides favourable conditions for the seeds to germinate
3. Germination of seeds leads to development of seedlings and saplings
4. All of these in same sequence

Forests provide us many useful items like

1. Wood
2. Fodder for animals
3. Spices and medicines
4. All of these

There are large numbers of big trees in forests. But we can also find

1. Shrubs
2. Herbs
3. Grasses
4. All of these

Forests are habitat to many

1. Animals and plants
2. Birds
3. Humans
4. Pets

The land in forests is

1. Marshy
2. Plane
3. Uneven and covered with many trees
4. All of these

Animals warn their fellow animals of forests about the intruders

1. By visiting them personally
2. By making unusual sounds
3. By making unusual faces
4. By throwing fruits or other articles

We feel quite fresh and happy in forests because

1. The environment is peaceful
2. A cool breeze blows
3. There is darkness
4. Both (a) and (b)

One is not able to see land while viewing the forest from a height because

1. It is overcast
2. Land is not there
3. Different treetops have formed a green cover over the land
4. Mountains obstruct the view

Visitors are advised to keep quiet in forests because

1. Animals will come to know about them
2. Noise could disturb the animals living in the forest
3. Animals get scared
4. All of these

Forests serve as green lungs and water purifying systems in nature. Do you agree?

1. Yes
2. No
3. Can't say
4. May be