natural vegetation Flashcards

1
Q

What is natural vegetation?

A

it refers to a plant community which has grown naturally without human aid and has been left undisturbed by human beings for a long time

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2
Q

What is flora and fauna?

A

flora- plants of a particular region

fauna refers to the species of animals

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3
Q

what is an ecosystem?

A

an ecosystem is an integrated unit consisting of community of living organisms and physical environment

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4
Q

state any two factors that form the flora and fauna of that region?

A

soil, relief, climate

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5
Q

what is a biome?

A

a very large ecosystem of land having distinct types of vegetation and animal life is called biome

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6
Q

name the vegetation belts of india

A
tropical rainforests
tropical deciduous forests
thorn forests
littoral forests
mountain forests
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7
Q

name any two regions in india where tropical evergreen forests are found

A

western side of western Ghats, north eastern india, west bengal. assam

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8
Q

name three commercially useful trees of tropical rainforests

A

rosewood, ebony, mahogany

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9
Q

mention any two factors responsible for deforestation

A

overgrazing by animals

commercialisation of agriculture

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10
Q

the tropical rainforests appear green all year round. give reason

A

there is no definite time for the trees of tropical rainforests to shed their leaves. thus they appear green all year round

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11
Q

which forest type is also known as monsoon forests?

A

tropical deciduous forests

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12
Q

name an area in india where tropical monsoon forests is found

A

foothills of himalayas
jharkhand
eastern slopes of western ghats

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13
Q

which are the most widespread forests of india

A

tropical deciduous forests

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14
Q

state the categories into which tropical deciduous forests are divided

A

moist deciduous forests and dry deciduous forests

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15
Q

name one important tree of moist deciduous and dry deciduous forests

A

moist deciduous - teak

dry deciduous - sal

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16
Q

name some useful trees of thorn forests

A

babul, date palm, khair, kikar

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17
Q

name two evergreen trees

A

rosewood, ebony

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18
Q

name some trees of mountains

A

silver fir, pine, junipers

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19
Q

what type of trees grow in tidal forests ?give an

example

A

mangrove trees grow in tidal forests,. ex:sundari tree

20
Q

explain with example how altitude and temperature can affect the type of vegetation?

A

on the slopes of the himalayas and hills of the peninsula above the height of 915m, there is a fall in temperature. this affects the type of vegetation and its growth. in foothills of himalayas, tropical deciduous forests are found but when the altitude rises, mountain forests are found

21
Q

name two areas where the thorn and scrub forests are formed

A

central and eastern rajasthan
madhya pradesh
gujarat
chhattisgarh

22
Q

name any one medicinal plant

A

neem

23
Q

Why are the leaves of thorn forests small and stem succulent?

A

the leaves of thorn forests are small to minimise evaporation
the stems are succulent to conserve water

24
Q

where is alpine vegetation found?

A

at high altitudes, generally more than 3600 metres above sea level

25
Q

mention one feature of thorn forests

A

it is found in regions with less than 50cm of rainfall

26
Q

‘“great variety of vegetation is found in different parts of india” give two reasons

A

1) unequal distribution of rainfall and temperature

2) different regions have different types of soil

27
Q

“the trees of tropical evergreen forest do not shed their leaves annually”give reason

A

Due to the absence of a particular dry season and because of high heat and high humidity, the trees of tropical evergreen forest do not shed their leaves

28
Q

Name the type of vegetation which is found in the areas recording over 150 cm of rainfall and temperature between 25 and 27

A

Tropical evergreen forest

29
Q

mention any two important trees of tropical rainforest

A

ebony and mahogany

30
Q

which is the typical monsoon forest?

A

tropical deciduous forests

31
Q

give on important use of the following trees
teak
bamboo

A

teak is used in the manufacture of outdoor furniture

Bamboo is an important source of fuel

32
Q

Why the trees of thorn forest have stunted growth

A

due to the lack of minerals and water

33
Q

Why the thorn forests have long roots

A

The long roots enable them to obtain water from deep underground

34
Q

Why thorn vegetation have sharp spines?

A

The sharp spines help the trees and bushes conserve water and protect them from animals

35
Q

Mention any one use of the following trees
babul
kikar

A

The leaves and bark of babul are used in arresting secretion or bleeding
The leaves and bark of kikar are used in arresting secretion or bleeding

36
Q

What is the importance of sundari trees?

A

It provides hard and durable timber which is used for construction and building purposes as well as for making boats

37
Q

“The forest occur in and around the delta estuaries and creeks prone to tidal influences”identify the forest

A

littoral or tidal forest

38
Q

When was india’s forest policy framed?

A

1894

39
Q

Mention the main plank of forest policy of 1988

A

Protection , conservation and development of forest

40
Q

Mention any two movements associated with forest conservation of india

A

van mahotsava and chipko movement

41
Q

What is main thrust area of social forestry?

A

The main thrust of social forestry is to reduce pressure on traditional forest areas by developing plantations of fuel wood, fodder and grasses. social forestry has become very popular during the last three decades

42
Q

name the apex body which is responsible for forest research , planning and conservation

A

Indian council of forestry research and education (ICFRE)

43
Q

WHERE IS INDIAN FOREST RESEARCH INSTITUTE?

A

Dehradun

44
Q

What is JFM?

A

It is joint forest management programme to develop and protect the forests with the help of local communities

45
Q

Write two reasons why monsoon deciduous forests are commercially more valuable than other types of forests

A

1) the tropical forests yield sandalwood,semal, teak, sal etc which can be used for making furniture and other products
2) These forests yield bamboo which is used for construction work, furniture fibre and paper