6th Standard Science ( Living Organisms and their Surroundings )

 The Living Organisms and their Surroundings

 

I Answer the following:-

1.What is habitat ?
Ans:The surrounding where (plants and animals) lives is called their its habitat or living organisms.

 

2.How are cactus adapted to survive in a desert ?
Ans: a)   Leaves are modified into spines which prevent the loss of water. 

b) Stem is modified into leaf like structures which store water and perform photosynthesis.

c) Stem are spongy and have waxy coating which prevent transpiration.

d) Roots are deep which can access water from depths.

 

3.Which of the things in the following list are non living ?
Ans: Plough, mushroom, sweing machine, Radio, boat, water hyacinth, Earthworm. Plough, Sewing machine, Radio, Boat.

 

4.Give an example of a non-living thing, which shows any two characteristics of living things.
Ans: Car is an example of a non living things which shows two characteristics of living thing:

1.   Shows motion

2. Creates sound

 

5.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.
Ans: Butter, Leather, Wool, Cooking oil, Salt, Apple.

 

6.List the common characteristics of the living things.
Ans:

a)   It shows growth

b)  Needs nutrition

c)  It reproduce

d)  It responds to stimuli

e)  It respires

 

7.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 habitates)
Ans:Speed is important for survival in the grasslands for animals that live there because it helps them to escape from predators. In grasslands, there are very less number of suitable places available there where animals can hide, so speed helps them in escaping from their predators.

 

II.Fill up the blanks:
1) The presence of specific features, which enable a plant or an animal to live in a particular habitat is called Adaption

2) The habitats of the plants and animals that live in water are called Aquatic habitat.

3) The habitats of the plants and animals that live on land are called Terrestrial habitat.

4) Soil, water and air are the Abiotic factors of a habitat.

5) Changes in our surrounding that make us respond to them are called Stimuli