Forests And Soil Test

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Forests And Soil Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following groups of wild animals represents the inhabitants of only deeper areas of the forest?

A
Boar, bison, jackal, porcupine

B
Dog, snake, monkey, deer

C
Cat, kangaroo, lion, elephant

D
Rabbit, beer, tiger, donkey

Solution

Deeper areas of forests are the denser regions of forests.
Boar, a wild pig, is found in deeper areas of forests.
Bison, the largest animal in North America where it is called buffalo, is found in deeper areas of forests.
Jackal, a wild animal resembling a dog, is also found in deep forests.
Porcupine is a herbivorous rodent whose body is covered with large protective quills (spines) that it can erect in defence against predators (enemy). It is found in deep forests of southern Europe, Asia, Africa and Indonesia.
Question 2
1 / -0

An interlinked food chain is called

A
food order

B
food cycle

C
food web

D
food pyramids

Solution

Interlinked or interconnected food chains are called food web. Most organisms eat more than just one kind of organism. Food webs are more complex as compared to food chains, which are simple. For example, birds and rats both can eat insects. Both owls and eagles can eat rat.
Therefore, the correct answer is food web.
Question 3
1 / -0

What do plants give out during photosynthesis?

A
Oxygen

B
Carbon dioxide

C
Humus

D
Nutrients

Solution

Photosynthesis is a process by which green plants synthesise their own food (sugars) with the help of sunlight, water, carbon dioxide and chlorophyll. Thus, this process converts carbon dioxide from the atmosphere or dissolved in water into glucose (sugar) molecules with evolution (giving out) of oxygen.
6CO₂ + 12H₂O C₆H₁₂O₆ + 6H₂O + 6O₂
Therefore, option (1) is the correct answer.
Question 4
1 / -0

During a heavy rainfall, the raindrops do not hit the forest floor directly. This is because of

A
intense root system

B
closed canopy

C
thick shrubs and herbs

D
long grass

Solution

During a heavy rainfall, the raindrops do not hit the forest floor directly because the uppermost layer of the forest canopy intercepts the flow of raindrops.
Question 5
1 / -0

Which of the following are the major causes of deforestation?

A
Global warming, fire and drought

B
Erosion, agriculture and pollution

C
Construction, industrialisation and flooding

D
Population, agriculture and industrialisation

Solution

Over population, need of agriculture and industrialisation demand cutting of trees to fulfil their requirements, which leads to deforestation.
Question 6
1 / -0

Why is a forest called dynamic living entity?

A
As it regenerates and grows

B
As it is full of life and vitality

C
As it is home to varied flora and fauna

D
As it has decomposing activity

Solution

Forests provide home to a large number of plants and animals. Forests are the green lungs and serve as water purifying system of nature. So, they are known as dynamic living entity.
Question 7
1 / -0

Which of the following options defines the term 'afforestation'?

A
Decomposition of matter

B
Plantation of trees

C
Destroying forest

D
Over-grazing

Solution

Afforestation means the establishment of forest on land or planting new trees to form a new forest.
Question 8
1 / -0

Which of the following sentences is not correct in respect to soil formation?

A
It is a very slow process.

B
Tiny rock particles are mixed with humus.

C
Rocks are broken down by the action of heat, wind and water.

D
Plant roots do not play any role in the formation of soil.

Solution

Soil formation is influenced by organisms (such as plants), micro-organisms (such as bacteria or fungi), burrowing insects, animals and humans.
Question 9
1 / -0

Which of the following factors does not cause soil pollution?

A
Dumping of plastic and glass objects

B
Use of pesticides

C
Hybridisation

D
Spraying of insecticides

Solution

Hybridisation leads to new varieties of crops; it doesn't cause soil pollution.
Question 10
1 / -0

Which of the following options gives the best meaning of the water table?

A
Level of groundwater

B
Depth at which water can be found

C
Layers of water in the soil

D
The volume of water present on the earth

Solution

Water table refers to the level of groundwater. Here, the ground is saturated with water.
Question 11
1 / -0

Growth of which of the following crops would be best on loamy soil with more sand?

A
Wheat

B
Cabbage

C
Cotton

D
Gram

Solution

Cotton can grow best in loamy soil with more sand.
Question 12
1 / -0

Which of the following organisms is called farmer's friend as it increases porosity and fertility of the soil?

A
Lichen

B
Fungus

C
Centipede

D
Earthworm

Solution

Earthworm moves through the soil that loosens and aerate the soil and its excreta increases the fertility of the soil. It is also known as farmer's friend.
Question 13
1 / -0

If soil is put in a beaker filled with water, which part of soil occupies the second layer from the bottom?

A
Gravel

B
Sand

C
Silt

D
Clay

Solution

Sand occupies the second layer from the bottom when put in a beaker containing water. Sand contains a lesser proportion of big particles compared to the gravel, so it would occupy the second layer.
Question 14
1 / -0

In which of the following ways are the layers of soil arranged in the soil profile?

A
Horizontally

B
Vertically

C
Radially

D
Conically

Solution

The layers of soil are arranged in the soil profile in vertical manner.
Question 15
1 / -0

In which of the following soils is least percolation rate found?

A
Sandy soil

B
Clayey soil

C
Loamy soil

D
Gravel soil

Solution

Least percolation is found in clayey soil. It is 0.1 inch per hour.

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Re-Attempt Weekly Quiz Competition

Forests And Soil Test - 5

Result

Forests And Soil Test - 5

Score

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SHARING IS CARING

Question 1

Boar, bison, jackal, porcupine

Dog, snake, monkey, deer

Cat, kangaroo, lion, elephant

Rabbit, beer, tiger, donkey

Solution

Question 2

food order

food cycle

food web

food pyramids

Solution

Question 3

Oxygen

Carbon dioxide

Humus

Nutrients

Solution

Question 4

intense root system

closed canopy

thick shrubs and herbs

long grass

Solution

Question 5

Global warming, fire and drought

Erosion, agriculture and pollution

Construction, industrialisation and flooding

Population, agriculture and industrialisation

Solution

Question 6

As it regenerates and grows

As it is full of life and vitality

As it is home to varied flora and fauna

As it has decomposing activity

Solution

Question 7

Decomposition of matter

Plantation of trees

Destroying forest

Over-grazing

Solution

Question 8

It is a very slow process.

Tiny rock particles are mixed with humus.

Rocks are broken down by the action of heat, wind and water.

Plant roots do not play any role in the formation of soil.

Solution

Question 9

Dumping of plastic and glass objects

Use of pesticides

Hybridisation

Spraying of insecticides

Solution

Question 10

Level of groundwater

Depth at which water can be found

Layers of water in the soil

The volume of water present on the earth

Solution

Question 11

Wheat

Cabbage

Cotton

Gram

Solution

Question 12

Lichen

Fungus

Centipede

Earthworm

Solution