Living Organisms & Their Surroundings Test

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Living Organisms & Their Surroundings Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is the correct sequence of organisms in a food chain?

A
^{_Grass_Deer_Eagle_Snake}

B
^{_Grass_Rabbit_Deer_Tiger}

C
^{_Grass_Deer_Elephant_Tiger}

D
^{_Grass_Rat_Snake_Peacock}

Solution

The correct sequence is:

Grass Rat Snake Peacock
Question 2
1 / -0

Which of the following organisms feed on dead and decaying matter?

A
Autotrophs

B
Decomposers

C
Chemotrophs

D
Consumers

Solution

The organisms that feed on dead and decaying matter are called decomposers.
Question 3
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What of the following is the best example of a mini ecosystem?

A
Water bottle

B
Kitchen

C
Pond

D
Aquarium

Solution

Aquarium is the best example of a mini ecosystem.
Question 4
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The amount of moisture in the air is called

A
humidity

B
rancidity

C
climate

D
rain

Solution

The amount of moisture in the air is called humidity.
Question 5
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Which of the following organisms suck human blood?

A
Leeches

B
Earthworms

C
Hydras

D
Roundworms

Solution

Leeches suck human blood.
Question 6
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Which of the following features belongs to invertebrates?

A
They lack a backbone.

B
They possess vertebral column.

C
They lack tail and bones.

D
They possess scaly skin.

Solution

Organisms which lack a backbone are called invertebrates.
Question 7
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Which of the following organisms has an aerial habitat?

A
Bat

B
Fish

C
Lion

D
Camel

Solution

An aerial habitat is the living space above the ground. A bat has an aerial habitat.
Question 8
1 / -0

Which of the following reptiles has a four-chambered heart?

A
Snake

B
Lizard

C
Crocodile

D
Turtle

Solution

Crocodile has a four-chambered heart.
Question 9
1 / -0

Which of the following animals is/are found on the beaches?

A
Yak

B
Crabs

C
Ants

D
Sharks

Solution

Habitat of animals and plants in different regions depends upon their body structure and their adaptability. For example, animals like Yak, lions and ants live on ground and are known as terrestrial animals. Animals like fish, whales, sharks live in water and are known as aquatic animals. Crab is an animal which is generally found on the sea shores or beaches as it is neither completely terrestrial nor aquatic.
Question 10
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The change in the body of an organism, over a short period, due to environmental changes is called

A
adaptation

B
stimuli

C
sensitivity

D
acclimatisation

Solution

Acclimatisation is a gradual change in the environment (such as change in temperature or humidity) in which the organism adjusts, allowing it to maintain performance across a range of environmental conditions. It occurs in a short period of time and within the organism's lifetime.
Question 11
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Which of the following is a peculiar feature of animals living in mountainous regions?

A
Thick fur on skin

B
Long legs

C
Scaly body

D
Webbed feet

Solution

Generally, the temperature in the mountain regions is low. So, the organisms inhabiting mountainous regions are adapted to survive well in the cold climate as they have thick fur or thick skin on the body so as to conserve the body heat and avoid heat loss to the surroundings.
Question 12
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Which of the following characteristics of a lion mimics dry grasslands and helps it to catch prey without being caught by the eyes of its prey?

A
Long legs

B
Body colour

C
Front eyes

D
Strong looks

Solution

Dry grasses turn brown and also body colour of the lion is muddy brown. This adaptation helps the lion to survive well in dry grasslands as it can easily catch its prey without being identified by its prey.
Question 13
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What kind of roots are observed in hydrilla?

A
Poorly developed roots

B
Deep roots

C
Fibrous roots

D
Well developed root system

Solution

Hydrilla is an aquatic plant, i.e. it lives in water. It has poorly developed roots because its body is in direct contact with water which acts as absorptive surface to absorb water and minerals.
Question 14
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In which of the following habitats does lotus grow?

A
Ponds

B
Seas

C
Oceans

D
Groundwater

Solution

Lotus is generally seen growing on the surface of ponds which do not have fast water current.
Question 15
1 / -0

Which of the following groups contains organisms that give birth to young ones?

A
Fish, frog, crocodile

B
Snake, ostrich, hen

C
Eagle, crow, pigeon

D
Dog, lion, deer

Solution

The animals which lay eggs, for example, snakes, ostriches, frogs, crows, etc. are known as oviparous animals. On the other hand, the animals which directly give birth to young ones, for example, dogs, lions, deers and humans are known as viviparous animals.