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Natural vegetation Flashcards

(68 cards)

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1
Q

What is natural vegetation?

A

plant cover that has not been disturbed over a long time and has grown without human interference

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2
Q

What is flora?

A

Plants of a particular region or period, listed as species and considered as a group

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3
Q

What is vegetation ?

A

assemblage of plant species living in association with each other

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4
Q

4 major types of vegetation

A

tundra, grasslands, scrubs, forests

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5
Q

What is forest

A

large tract of land covered with trees and accompanying undergrowth of shrubs,herbs

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6
Q

bamboo is used in manufacturing ______and bamboo pulp is used in manufacturing _______.

A

rayon, paper

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7
Q

natural sponge of the forest

A

Humus

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8
Q

functions of humus

A
  1. increases soil fertility

2. prevents evaporation of water

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9
Q

Tropical evergreen forests are also known as ________

A

tropical rainforests

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10
Q

Climatic conditions required for tropical rainforests

A

temp -> 25-27 celsius
rain- >250 cm
humidity- >77%

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11
Q

Distribution of tropical evergreen forest

A
  1. western slopes of Western Ghats
  2. hills of N-E
  3. Lakshadweep
  4. Andaman and Nicobar islands
  5. Tamil nadu coast
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12
Q

The trees of tropical evergreen forest reach heights or more than ___

A

60 m

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13
Q

Why does floor of tropical evergreen forest lack grass

A

Dense canopy of trees don’t allow sunlight to reach ground

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14
Q

the trees of tropical evergreen forest appear green all year round… why?

A

don’t have fixed time to shed their leaves

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15
Q

some trees which grow in tropical evergreen forest are:

A 
Rosewood
Ebony 
Mahogany 
Toon
Telsur
Sissoo
Gurjan
Chaplas
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16
Q

why is tropical evergreen forest not fully exploited?

A
  1. tangled mass of all kinds of trees .. no pure variety

2. lack of means of transport

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17
Q

Tropical deciduous forests are also known as _____

A

tropical monsoon forests

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18
Q

most commercially exploited forests of India

A

Tropical deciduous forests

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19
Q

most widespread forests in India

A

Tropical deciduous forests

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20
Q

two kinds of Tropical deciduous forests

A

moist and dry

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21
Q

Climatic conditions of moist deciduous forests

A

temp - 24 to 27 celsius
rain- 100 to 200 cm
humidity - 50 to 80%

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22
Q

distribution of moist deciduous forests

A
  1. foothills of Himalayas
  2. Eastern slopes of western Ghats
  3. N-E peninsula
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23
Q

commonly found trees of moist deciduous forests

A 
Mulberry
arjun
sal
mahua 
teak
sandalwood 
palas
shisham
semul
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24
Q

pure variety of trees can be found in

A

deciduous forests

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25
when do moist deciduous forests shed their leaves ?
6 to 8 weeks during spring and early summer when there is acute water shortage
26
climatic conditions of dry deciduous forests
temp----> 23 to 27 celsius rain------> 70 to 100 cm humidity-> 51 to 58%
27
Dry deciduous forests thrive between _____________ in the east and ___________ in the west
moist deciduous forest, tropical thorn forest
28
distribution of dry deciduous forests
plains of Bihar and UP
29
during dry season.. how does dry deciduous forests look and why
they give a naked look of trees as they shed their leaves completely during dry season
30
common trees found in dry deciduous forests are:
``` bel khair axlewood amaltas tendu ```
31
tropical desert forests are also known as
tropical thorn forests
32
climatic conditions of tropical desert forests
temp - 25 to 27 celsius rain- < 50 cm humidity < 47%
33
distribution of tropical desert forests
``` S-W Punjab Haryana Rajasthan Uttar Pradesh Gujarat ```
34
tropical desert forests have _____ vegetation
xerophytic
35
Due to paucity of rainfall, desert forest trees are _____ with large patches of _____ grass.
stunted, coarse
36
How do trees in desert forests adapt without enough water?
They have long tap roots that can reach very deep underground water They have thorns
37
Acacia has a symbiotic relationship with ____
stinging ants
38
in _____ forests , plants remain leafless for most of the year and look like_____ vegetation
tropical desert forests , scrub
39
common trees found in tropical desert forests
``` babool acacia cacti ber date palm neem ```
40
littoral forests are also called
tidal forests
41
climatic conditions of littoral forests
temp - 26 to 29 celsius | rainfall - > 200 cm
42
distribution of littoral forests
saline swamps of Sunderbans in WB | coasts areas of AP and Odisha
43
littoral forests have mainly ____ species of varying density and height
evergreen
44
littoral forests have breathing roots called ____
pneumatophores
45
which forests have stilt like roots?
littoral forests
46
what is an adaptation of littoral forests for surviving in soft and shifting mud?
profuse(abundant) growth with tangle of climbers
47
common trees found in littoral forests are:
``` Sundari agar screw pines canes and palms amur keora rhizophora ```
48
______ have been named after the tree Sundari
Sunderbans
49
palas tree use
rears shellac worms
50
rosewood tree use
decorative wood for carving , making furniture and floorboards
51
Date palm is used an an _____ , as a _______
astringent, decoction
52
ebony tree use
ornamental carving and for decoration, piano keys, musical instruments, sports goods
53
teak tree use
construction purpose and shipbuilding, furniture. railway carriages
54
sandalwood tree use
statues | oil
55
sal
railway sleepers | beams
56
sundari
Boat making
57
Ber
pickle
58
neem and babool
medicinal purpose
59
climatic conditions of mountain forests
temp - 12 to 13 celsius rain - 100 to 300 cm humidity - 56-65%
60
distribution of mountain forests
HImalayas nilgiris Western ghats Vindhyas
61
trees in mountain forests
``` wattle walnut chestnut oak spruce pine deodar jamun birch ```
62
social forestry
management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental,social and rural development
63
farm forestry
growing trees on farm land`
64
reforestation
re establishing forest by planting trees in an area where forests have been removed
65
social forestry is also called as
Van Mahotsava
66
in thorn forests.... leaves are modified into ____ and the roots are very ____
spines, long
67
Forest found in deltas
Littoral forests
68
Tidal forests are also known as
Mangrove forests

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