Chapter 9: The Living Organisms and their Surroundings

Science

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  Chapter 9: The Living Organisms and their Surroundings

  Class: VI

  Exemplar Solutions

Multiple Choice Questions

Question 1

Which of the following cannot be called a habitat?

(a) A desert with camels.

(b) A pond with fishes.

(c) A jungle with wild animals.

(d) Cultivated land with grazing cattle.

Answer

(d)

Question 2

Following are some features of plants

 

(i) They lose a lot of water through transpiration.

(ii) Their leaves are always broad and flat.

(iii) They lose very little water through transpiration.

(iv) Their roots grow very deep into the soil.

 

Which of the combination of above features are typical of desert plants?

 

(a) (i) and (ii) (b) (ii) and (iv)

(c) (ii) and (iii) (d) (iii) and (iv)

Answer

(d)

Question 3

Boojho comes across an animal having a stream-lined and slippery body. What is the habitat of the animal?

 

(a) Water

(b) Desert

(c) Grassland

(d) Mountain

Answer

(a)

Question 4

Which of the following are characteristics of living beings ?

 

(i) Respiration

(ii) Reproduction

(iii) Adaptation

(iv) Excretion

 

Choose the correct answer from the options below:

 

(a) (i), (ii) and (iv) only  (b) (i) and (ii) only

(c) (ii) and (iv) only  (d) (i), (ii), (iii) and (iv)

Answer

(d)

 

Question 5

Earthworms breathe through their

 

(a) skin

(b) gills

(c) lungs

(d) stomata

Answer

(a)

Question 6

Which of the following is not an example of response to stimulus?

 

(a) Watering in mouth when we see delicious food items.

(b) Closing of leaves of mimosa plant when touched.

(c) Shutting our eyes when an object is suddenly thrown in

our direction.

(d) A chick hatching out of an egg.

Answer

(d)

Question 7

Which of the following is correct for respiration in plants?

 

(a) Respiration takes place only during day time.

(b) Respiration takes place only during night.

(c) Respiration takes place both during day and night.

(d) Respiration takes place only when plants are not making

food.

Answer

(c)

Question 8

Which of the following is an incorrect statement about excretion?

 

(a) Excretion takes place in plants.

(b) Excretion takes place both in plants and animals.

(c) Excretion is the process of getting rid of excess water

only.

(d) Secretion is one method of excretion.

Answer

(c)

Question 9

Choose the set that represents only the 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, Insect

Answer

(d)

Question 10

Which one of the following is not associated with reproduction?

 

(a) A new leaf coming out of a tree branch.

(b) A dog giving birth to puppy.

(c) A seed growing into a plant.

(d) Chick hatching from an egg.

Answer

(a)

Question 11

Choose the odd one out from below with respect to reproduction.

 

(a) Eggs of hen

(b) Seeds of plants

(c) Buds of potato

(d) Roots of mango tree

Answer

(d)

Question 12

Although organisms die, their kind continue to live on earth. Which characteristic of living organisms makes this possible?

 

(a) Respiration.

(b) Reproduction.

(c) Excretion.

(d) Movement.

Answer

(b)

Question 13

If you happen to go to a desert, what changes do you expect to observe in the urine you excrete? You would

 

(i) excrete small amount of urine.

(ii) excrete large amount of urine.

(iii) excrete concentrated urine.

(iv) excrete very dilute urine.

 

Which of the above would hold true?

 

(a) (i) and (iii)  (b) (ii) and (iv)

(c) (i) and (iv)  (d) (i) and (ii)

Answer

(a)

Very Short Answer Questions

 

Question 14

Unscramble the given words below to get the correct word using the clues given against them.

 

(a) SATPADAOINT    specific features or certain habits which enable a living     being to live in its surrounding 

(b) RETECOXNI  Waste products are removed by this process

(c) LUMISIT  All living things respond to these

(d) ROUCDPRENTOI  Because of this we find organisms of the same kind

 

Answer

(a) ADAPTATIONS

(b) EXCRETION

(c) STIMULI

(d) REPRODUCTION

 

Question 15

Using the following words, write the habitat of each animal given in Fig. 9.1 (a to d).

 

  Grassland, Mountain, Desert, Pond, River

 

Answer

(a) Grassland   (b) Pond

(c) Mountain   (d) Desert

 

Question 16

 

Classify the following habitats into terrestrial and aquatic types.

 

  Grassland, Pond, Ocean, Ricefield

 

Answer

 

Terrestrial habitats  –   grassland, rice field

Aquatic habitats  –  pond, ocean

 

Question 17

 

Why is reproduction important for organisms?

 

 

 

Answer

 

Reproduction leads to the production of more individuals of an organism.

 

Question 18

 

Fill in the blanks:

(a) Saline water, hot air and sand are .................components of a habitat.

(b) The habitat of plants and animals that live in ............... is called the aquatic habitat.

(c) ................ enable a plant or an animal to live in its surroundings.

(d) Plants and animals that live on land are said to live in ............... habitats.

 

Answer

 

(a) abiotic  (b) water  (c) adaptations    (d) terrestrial

 

 

Short Answer Questions

 

Question 19

Paheli has a rose plant in her garden. How can she increase the number of rose plants in the garden?

 

Answer

 

By planting stem-cutting of the rose plant.

 

Question 20

 

Why do desert snakes burrow deep into the sand during the day?

 

Answer

 

As the deeper layers of sand are cooler, they burrow deep into the sand to stay away from heat of the desert during day time.

 

Question 21

 

Write the adaptation in aquatic plants due to which

 

(a) submerged leaves can bend in the flowing water.

(b) leaves can float on the surface of water.

 

Answer

 

(a) Leaves are narrow and ribbon like.

 

(b) Stems/stalks of leaves are long, hollow and light.

Question 22

Mention one adaptation present in the following animals:

 

(a) In camels to keep their bodies away from the heat of sand.

(b) In frogs to enable them to swim.

(c) In dolphins and whales to breathe in air when they swim near the surface of water.

 

Answer

 

(a) Long legs

(b) Webbed feet

(c) Blow holes

 

Question 23

 

Some desert plants have very small leaves whereas some others have only spines. How does this benefit the plants?

 

Answer

 

These are adaptations to dry conditions. As a result of these modifications the surface of lamina is reduced thereby reducing water loss by transpiration.

 

Question 24

 

What are the specific features present in a deer that helps it to detect the presence of predators like lion?

 

Answer

 

The specific features are as follows:

 

(a) Long ears to hear movement of predators.

(b) Eyes on the sides of its head which allow it to look in all directions.

 

Question 25

 

Read the features of plants given below:

 

(a) Thick waxy stem

(b) Short roots

(c) Cone shaped plants

(d) Sloping branches

(e) Small or spine-like leaves

(f) Hollow stem

 

Choose the type of plant for every feature given in a, b, c, d, e and f from the list given below:

 

Aquatic plant, Desert plant, Mountainous plant

 

Answer

 

(a) Desert plant

(b) Aquatic plant

(c) Mountainous plants

(d) Mountainous plant

(e) Desert plant

(f) Aquatic plant

 

 

Long Answer Questions

 

Question 26

 

Like many animals although a car also moves it is not considered as a living organism. Give 2-3 reasons.

 

Answer

 

1. Living organisms move on their own.
2. Car moves by the burning of fuels like diesel and petrol.
3. Car does not show any other living characteristics like respiration, digestion, reproduction, growth.

 

Question 27

 

What are the adaptive features of a lion that helps it in hunting?

 

Answer

 

(a) Brown body colour helps it to hide in dry land avoiding detection by its prey.

(b) Eyes placed in front allow it to know the exact location and movements of its prey.

(c) Powerful paws and long claws help it to catch and kill the prey.