NCERT Solutions for Class 6th Science

Chapter 9 - THE LIVING ORGANISMS AND THEIR SURROUNDINGS

(Complete Downloadable Chapter Solution PDF file is at the bottom of the page)

 

Q.1      What is a habitat?

Ans    The surroundings where organisms live is called a habitat. The organisms depend for their food, water,                air, shelter and other needs on their habitat.

 

Q.2      How are cactus adapted to survive in a desert?

Ans     Cactus survive in a desert due to following adaptations:

            1) The leaves in cactus are in the shape of spines which helps in reducing loss of water from them                         through transpiration.

            2) Its stem is covered with a thick waxy layer, which helps to retain water.

            3) Its roots go very deep into the soil for absorbing water.

 

Q.3      Fill up the blanks

           (a) The presence of specific features, which enable a plant or an animal to live in a particular habitat, is                called _____________ .

           (b) The habitats of the plants and animals that live on land are called __________ habitat.

           (c) The habitats of plants and animals that live in water are called ___________ habitat.

           (d) Soil, water and air are the ———— factors of a habitat.

           (e) Changes in our surroundings that make us respond to them, are called ____________.

Ans    (a) The presence of specific features, which enable a plant or an animal to live in a particular habitat, is                called _adaptation_.

           (b) The habitats of the plants and animals that live on land are called _terrestrial_ habitat.

 

Q.4      Which of the things in the following list are nonliving?

Plough, Mushroom, Sewing machine, Radio, Boat, Water hyacinth, Earthworm

 

Q.5      Give an example of a non-living thing, which shows any two characteristics of living things.

 

Q.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

 

Q.7      List the common characteristics of the living things.

 

Q.8      Explain, why speed is important for survival in the grasslands for animals that live there.

Ans     The grassland is a place where very few trees or places are available for an animal to hide. This helps                    predators such as lion, tiger, etc. to locate their prey in the grass easily. Hence the animals like deer etc.                are vulnerable to predators in grasslands and can only survive and escape if they run very fast.