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Class VI T1U5 The World of Animals Textbook Solutions
5 The World of Animals
Evaluation
I. Choose the correct answer.
1. The study of living beings or organisms is called
a. Psychology
b. Biology
c. Zoology
d. Botany
Ans: b. Biology
2. Which of the following are the characteristics of living beings?
(i) Respiration (ii) Reproduction (iii) Adaptation (iv) Excretion
Choose the correct one
a. (i), (ii), and iv only
b. (i), (ii) only
c. (ii) and (iv)only
d. (i), (iv), (ii) and (iii)
Ans: d. (i), (iv), (ii) and (iii)
3. Lizards breathe through their
a. skin
b. gills
c. lungs
d. trachea
Ans: c. lungs
4. All animals need
a. food and water only
b. water only
c. air, food and water
d. food only
Ans: c. air, food and water
5. Which animal has the special organs of breathing called gills?
a. Earthworm
b. Fox
c. Fish
d. Frog
Ans: c. Fish
6. Choose the set that represents only biotic components of a habitat.
a. Tiger, Deer, Grass, Soil
b. Rocks, Soil, Plants, Air
c. Sand, Turtle, Crab, Rocks
d. Aquatic plant, Fish, Frog, Insects
Ans: d. Aquatic plant, Fish, Frog, Insects
7. Which of the following cannot be called as a habitat?
a. A desert with camels
b. A pond with fish and snails
c. Cultivated land with grazing cattle
d. A jungle with wild animals
Ans: c. Cultivated land with grazing cattle
8. Birds fly in the air with the help of
a. heavy and strong bones
b. soft and thick bones
c. hollow and light bones
d. flat and thick bones
Ans: c. hollow and light bones
9. Paramecium moves from one place to other with the help of ___________.
a. pseudopodia
b. flagella
c. foot
d. Cilia
Ans: d. Cilia
10. Kangaroo rat lives in
a. aquatic habitat
b. desert habitat
c. grass land habitat
d. mountain habitat
Ans: b. desert habitat
II. Fill in the blanks.
1. Water bodies, deserts, mountains are called ___________.
Ans: ecosystem
2. Based on the number of cells present animals are classified into ___________and ___________.
Ans: unicellular, multicellular
3. Tail of a bird acts as a rudder which helps to ___________.
Ans: change the direction
4. Amoeba moves with the help of ___________.
Ans: pseudopodia
III. State True or False. If false, write the correct statement.
1. Habitat is a living or dwelling place of an organism.
Ans: True
2. The geographical features and environmental conditions on earth remain same from one place to other.
Ans: False
The geographical features and environmental conditions on earth differ from one place to another.
3. Amoeba is a unicellular organism and it moves with pseudopodia.
Ans: True
4. Birds can see only one object at a time.
Ans: False
Birds have binocular vision, so they can see one object with one eye and another object with another eye.
5. Paramecium is a multicelluar organism.
Ans: False
Paramecium is a unicellular organism.
IV. Complete the following.
1. Tropical rain forests, grasslands and deserts are known as ___________.
Ans: Terrestrial ecosystem
2. Some living things are made of a single cell, called ___________organism.
Ans: unicellular
3. The breathing organ of a fish is known as ___________.
Ans: gills
4. The lizard ___________on the ground with its claw on its feet.
Ans: walks
5. Camel stores ___________ in its hump.
Ans: fat
V. Answer very briefly.
1. How do birds catch their prey?
BIrds catch their prey with their sharp claws and powerful beaks.
2. Where can we see camels in India?
We can see camels in Thar desert, Rajasthan .
3. Name the locomotory organ of Amoeba.
The locomotory organ of Amoeba is pseudopodia.
4. What are the body parts of a snake?
Head, body and tail.
5. Which structure helps the bird to change its direction while flying in air?
The tail of the bird helps to change the direction while flying in air.
VI. Answer briefly.
1. Differentiate between unicellular and multicellular organisms.
2. Write the adaptive features of polar bear and penguin.
Polar Bear:
Habitat: Polar region
Adaptive features: Thick skin for protection, white fur
Penguin:
Habit: Polar region
Adaptive features: Paddle to swim, walk with two legs
3. Mention the features that help a bird to fly is the air?
They have streamlined body shape which provides minimum resistance to air.
The tail of the bird helps it to control the direction of the movements.
They have strong chest muscles which help them withstand the pressure of the air while flapping their wings during flight.
4. What are the adaptations seen in different types of vertebrates?
Mountain goat:
Habitat: Mountains
Adaptive features: Strong hooves for running , long hair to protect from cold
Lion:
Habitat: Forest
Adaptive features: Strong and fast runner has sharp claws to catch prey.
Fish:
Habitat: Water
Adaptive features: Gills, fins, streamlined body
Camel:
Habitat: Desert
Adaptive features: Long leg and flat padded feet to walk in desert sand,humb, thick skin, it does not sweat, long eyelashes to protect from dust.
VII. Answer in detail.
1. Describe the various features which help camel dwell well in the desert.
The camel has long legs which help it to keep its body away from the hot sand in the desert.
A camel can drink large amounts of water (when it is available) and store it in the body.
A camel’s body is adapted to save water in the dry desert in the following ways: (i) A Camel passes small amount of urine (ii) Its dung is dry and it does not sweat. (iii) Since a camel loses very little water from its body, it can live for many days without drinking water.
A camel’s hump has fat stored in it. In case of energy requirement a camel can break down stored fat for nourishment.
A camel has large and flat padded feet which help it to walk easily on soft sand. Thus it is called 'Ship of the desert'.
Camels have long eyelashes and hairs to protect their eyes and ears from the blowing dust.
It can keep its nostrils closed to avoid dust during sand storms in the deserts.
