stdv sc forest question and answer

Forest

D1.Name any four products that are obtained from forests.

Ans:Four products that are obtained from forest are honey, lac, medicine &timber.

D2.Why do some men cut trees?

Ans: Some men cut trees to make houses, industries, for construction and for special products.

D3.What is the Gir National Park famous for?

Ans:Gir National Park is famous for Asiatic lion.

D4.Name two migratory birds that visit Bharatpur Bird sanctuary.

Ans:Two migratory birds that visit Bharatpur Bird Sanctuary are Siberian Crane & Painted stork.

D5.What is the average temperature and annual rainfall for a forest  to develop?

Ans:A forest  to develop needs an average temperature of 10 ^o Celsius and a minimum 200 mm rainfall.

E1. List four harmful effects of deforestation.

Ans: Four harmful effects of deforestation are:-

i)                  decrease in rainfall

ii) Increase in the amount of carbon dioxide gas.

iii) destruction of habitat of plants and animals

iv) Decrease in the levels of ground water in the nearby areas.

E2.How do forest prevent soil erosion?

Ans: The roots of the plants hold soil  very tightly which prevents the soil from erosion by wind and water.

E3.state  the importance of forest  to human being

Ans: Importance of forest to human beings are as follows:

ü Forests   give medicines to human being.

ü Forests give  fruits,flower,medicine

ü Forest control flood

ü Forest gives many special products like catuech, lac, honey  and bamboo.

E4.why forest is called lungs of earth?

Just as our lungs absorb carbon dioxide from the blood and infuse it with oxygen, green plants absorb carbon dioxide during photosynthesis and in return, release oxygen into the atmosphere. So forests are known as “the lungs of earth”.

E5.We can contribute towards protection of forests in the following ways:

1)By minimizing the use of forest products.

2)By creating awareness among the people about importance of plant

3)By implementing strict rule and regulation

Value Based question answer

Q1.Who do you think  had made the better  choice of purchasing the gifts Ridhi or her mother?

Ans: Ridhi’s  mother had made better choice of purchasing

Q2.make a list of five things ,used at home or school,made from wood.

Ans:The following things are made from wood:

i)furniture         ii)table     iii)door & windows iv)basket  v) showcase.

Q.3 Suggest two ways by which every person can contribute towards forest conservation?

Ans:-(i) We should minimize the use of wood and wood products.

(ii)We should encourage people to not cut trees .