NCERT Solutions for Class 6 Science Chapter 9 The Living Organisms and their Surroundings

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The Living Organisms and their Surroundings NCERT Solutions for Class 6 Science Chapter 9

Class 6 Science Chapter 9 The Living Organisms and their Surroundings Exercise Questions and Answers

Question 1.
What is a habitat?
Answer:
The place where animals survive flourish and reproduce is known as habitat. A suitable habitat should be safe and food should be available in plenty. The climate of the habitat should be favorable for the animals living there.

Question 2.
How are cactus adapted to survive in a desert?
Answer:
The adaptive features of cactus to survive in a desert are:

1. The leaves of cactus plants are in the shape of spines which helps in reducing loss of water from leaves through transpiration.
2. The stem is leaf-like to carry photosynthesis.
3. The stem is covered with a thick waxy layer, which helps to retain water.
4. Their roots go very deep into the soil for absorbing water.

Question 3.
Fill in the blanks:

1. The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called …………………..
2. The habitats of the plants and animals that live on land are called ………………….. habitat.
3. The habitats of plants and animals that live in water are called ………………….. habitat.
4. Soil, water, and air are the factors of a habitat.
5. Changes in our surroundings that make us respond to them are called. …………………..

Answer:

1. adaptation
2. terrestrial
3. aquatic
4. abiotic
5. stimuli.

Question 4.
Which of the things in the following list is nonliving?
Plough, Mushroom, Sewing machine, Radio, Boat, Water hyacinth, Earthworm
Answer:

• Plough
• sewing machine
• Radio
• The boat is nonliving.

Question 5.
Give an example of a non-living thing, which shows any two characteristics of living things.
Answer:
One such example is the cloud. It shows the following two properties of living things: (i) It grows in size. (ii) It shows movement.

Question 6.
Which of the non-living things listed below, were once part of a living thing?
Butter, Leather, Soil, Wool, Electric bulb, Cooking oil, Salt, Apple, Rubber.
Answer:

• Butter
• Leather
• Wool
• Cooking oil
• Apple
• Rubber are non-living things which were once part of a living thing.

Question 7.
List the common characteristics of living things.
Answer:
Some common characteristics of living things are listed below:

• Growth
• Movement
• Feeding
• Responsiveness
• Excretion
• Respiration
• Cellular structure
• Reproduction
• Adaptation

Question 8.
Explain, why speed is important for survival in the grasslands for animals that live there.
(Hint: There are few trees or places for animals to hide in grassland habitats.)
Answer:
In Grassland habitats, the places for animals to hide are limited and when an enemy attacks an animal it has to run fast so as to reach a safe place. If it fails, it has to lose its life. So, the speed in such cases is very important in such habitats.

Class 6 Science Chapter 9 The Living Organisms and their Surroundings InText Questions and Answers

Activity 1

Think of the plants, animals, and other objects found in different surroundings and write in the table giver below Table 9.1 Animals, plants, and other objects found in different surroundings:

In forest	On mountains	In desert	In sea	Any other, Pond and Lakes

Answer:

In forest	On mountains	In desert	In sea	Any other, Pond and Lakes
Lion	Mountain Goats	Camels	Crab	Frog
Deer	Yak	Snakes	Fishes	Hydrilla
Elephant	Snow leopards	Desert rats	Saline water	Water lily
Tiger	Pine trees	Lizards	Algae	Water- hyacinth
Rhinoceros	Insects	Cactus	Seaweeds	Lotus
Monkey		Acacia	Corals	Freshwater
Neem Tree		Agava	Starfish	Snails
Banyan Tea	Opuntia	Urchins	Insects
Insects		Bar
Grass		Insects
Birds
Butterflies

Activity 2

Collect some dry moong seeds. Keep a small heap of seeds aside and soak the rest in the water for a day. Divide the soaked seeds into four parts. Keep one part completely submerged in water for 3-4 days. Do not disturb the dry seeds and those submerged in water. Keep one part of soaked seeds in a sunny room and another in a completely dark region like a cupboard that does not allow any light to come in. Keep the last part in very cold surroundings, say, in a refrigerator or with ice around them. Set these three parts to germinate by rinsing them and draining the water every day.
Now answer the following questions :

Question 1.
What do you notice?
Answer:
We notice that some plants start germinating.

Question 2.
Do the seeds in all five parts germinate equally?
Answer:
No.

Question 3.
Do you find slower or no germination in any of these?
Answer:
Yes, the dry moong seeds do not germinate.

Question 4.
Do you find that abiotic factors like air, water, light, and heat are very important for the growth of plants?
Answer:
Yes.

Activity 3

Bring a potted cactus and a leafy plant to the classroom. Tie polythene bags to some parts of the two plants. Leave the potted plants in the sun and observe after a few hours.
Now answer the following questions :

Question 1.
What do you see?
Answer:
We see drops of water have collected on the two polythene bags.

Question 2.
Do you notice any difference in the amount of water collected on two polythene bags?
Answer:
Yes, water collected in the leafy plants is more than water collected in cactus.

Activity 4

Place a potted plant in a room a little away from a window through which sunlight enters some time during the day (Fig. 9.1). Continue watering the plant for a few days.

Now answer the following question:

Question 1.
Does the plant grow upright, like plants out in the open? Note the direction in which it bends, if it is not growing upright. Do you think, this may be in response to some stimulus?
Answer:
No, the plant does not grow upright, like plants out in the open. It bends towards the window from where light is coming. Yes, it is a response to light.