DAV Class 6 Science Chapter 7 Question Answer

DAV Class 6 Science Chapter 7 Question Answer are prepared as per the latest DAV syllabus (2021-2022). Detailed answers provided here assist students in getting complete knowledge of the chapter 7 The World of Living. These DAV Solutions will familiarize you with surroundings where animals and plants live, sharing of habitats, a variety of animals live in different places and common characteristics of living organisms.

DAV Class 6 Science Chapter 7 Question Answer The World of Living

DAV Solutions for Class 6 Science will help you in building a strong foundation for the advanced topics you study in your future classes. The Different types of questions provided in these solutions will create a problem-solving ability in you, which is most important from the exam point of view.

Highlights

• A. Fill in the blanks.
• B. True or False.
• C. Tick the correct option.
• D. Answer the following questions in brief.
• E. Answer the following questions.

A. Fill in the blanks.

1. Plants, animals and human beings are collectively known as ___________.

2. Amoeba is a ___________ organism.

3. The process, used by plants to synthesise their own food, is known as ___________.

4. All living organisms respond to various kinds of ___________

5. ___________ are very small plants.

Answer: (1) living things (2) unicellular (3) photosynthesis (4) stimuli (5) Herbs

B. Write True or False for the following statements.

1. Amoeba is a plant.

2. Living organisms exhibit many variations due to their habitats and habits,

3. Many non-living things can be moulded in different forms or shapes.

4. All living things die.

5. Lotus is an example of a hydrophyte.

6. Invertebrates do not possess a backbone.

Answer: (1) False (2) True (3) True (4) True (5) True (6) True

C. Tick the correct option.

Answer:

D. Answer the following questions in brief.

1. Name any three important characteristics of living beings.

Answer: Characteristics of living beings are: –

• (1) Living things reproduce.
• (2) Living things grow.
• (3) Living things are made up of cells.

2. State the difference between autotrophs and heterotrophs.

Answer:

Autotrophs – These plants prepare their own food by the process of photosynthesis. 

Example: All green plants belong to this category.

Heterotrophs – These plants cannot prepare their own food. They use the food synthesised by other plants or animals.

Example: Animals, humans, etc.

3. Give two examples each of annual, biennial and perennial plants.

Answer:

4. Give two examples each of animals which reproduce (i) by laying eggs and (ii) by giving birth to young ones.

Answer:

(1) Hen and Fish.

(2) Goat and Cow.

5. Give two examples each of vertebrates and invertebrates.

Answer:

Vertebrates: Birds and Fish.

Invertebrates: Earthworm and Snail.

6. Write the names of any four useful products obtained from plants.

Answer: We obtained spices, vegetables, oil, grains, etc. from plants.

E. Answer the following questions.

1. All living things respond to external stimuli. Justify this statement with examples.

Answer: All living organisms respond to different stimuli. This statement is justified by following example: –

• (1) Animals, like earthworm, move away from light and saline media.
• (2) The tip of a shoot system tends to move towards light.
• (3) The drooping of a leaf of a ‘touch-me-not’ plant, is a response to the touch stimulus.

2 A cloud is considered as non-living even though it can move and can grow bigger. Explain why?

Answer: A cloud is considered as non-living even though it can move and can grow bigger because cloud do not show all characteristics of living things like-

• (1) It can’t breathe like living things.
• (2) It can’t take food items.
• (3) It is not made up of cells.
• (4) A cloud cannot respond to different stimuli.

3. Write two points of differences between (1) herbs and shrubs and (2) shrubs and trees.

Answer: 

(1) Difference between herbs and shrubs

Herbs

(1) Herbs are very small plants. 

(2) They have soft and green stems.

Example: Mint leaves, Carrot, etc.

Shrubs

(1) Shrubs are medium sized plants.

(2) They are bushy in appearance and have a hard woody stem.

Example: Raat ki rani, bougainvillea, rose, cotton plants, etc. 

(2) Difference between shrubs and trees

Shrubs

(1) Shrubs are medium sized plants.

(2) They are bushy in appearance and have a hard woody stem.

Example: Raat ki rani, bougainvillea, rose, cotton plants, etc. 

Trees

(1) Trees are tall and large plants.

(2) They have strong and woody stems.

Example: Neem, peepal, mango, apple trees, etc.

4. State the differences between biennial and perennial plants.

Answer: Difference between biennials and perennials plants

Biennials

(1) These plants live for two seasons. 

(2) In the first year, they have full vegetative growth and in the second year, they bear flowers and fruits.

Example: Carrot and turnip

Perennials

(1) These plants live for many years. 

(2) They produce flowers and fruits many times in their life time. 

Example: Mango, guava and neem

5. Name two types of terrestial plants. How do they differ on the basis of their habitat and water requirements?

Answer: Two types of terrestrial plants are:

(1) Mesophytes (2) Xerophytes

They are differed on the basis of their habitat and water requirements.

Mesophytes

These plants grow on land and need moderate amount of water supply for their survival. 

Examples: Mango tree, Apple tree, etc.

Xerophytes

These plants grow in deserts. They need very small amounts of water for their survival. 

Examples: Cacti, babool, etc.

6. How are vertebrates different from invertebrates?

Answer: Vertebrates are differed from invertebrates in this way: –

Vertebrates

(1) They have a backbone, which is made up of several small ring-like bones, called vertebrae.

(2) These animals are well-developed and have a bony skeleton.

(3) The examples are: Human Beings, Fish, Frog, Lizard, Birds, etc.

Invertebrates

(1) They do not have a backbone.

(2) These animals have a soft body.

(3) The examples are: Earthworm, Cockroach, Octopus, Star fish, etc.

7. Write any four uses of animals in our daily life.

Answer: Four uses of animals in our daily life are: – 

(1) We get many different products like leather, wool and silk from animals.

(2) Animal excreta are used as manure and for producing gobar gas.

(3) We get many edible products like milk, meat, etc.

(4) Animals like Camel and Horse are used for transportation of materials and humans.