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2020 Sec 1 T2 NWA

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.
How do trees in the tropical rainforest remain evergreen?
a)
The leaves never die
b)
They continuously grow new leaves and replace older ones
c)
The leaves are always green in colour
d)
The leaves take in a lot of carbon dioxide and give out oxygen
2.
How does the tropical rainforest contribute to the water supply in MacRitchie Reservoir?
a)
The roots of the trees take in impurities and filter them out of the water
b)
Water is lost through transpiration from the leaves and contributes to the water supply
c)
Leaves stop rainwater from reaching the ground directly and allows groundwater to be stored
3.

According to the graph, which of the following is a likely cause of deforestation?

a)

Agricultural activities

b)

Cattle ranching

c)

Logging

d)

Mining

4.

Which of the following are impacts of deforestation?


i. Increased risk of flooding

ii. Greenhouse effect

iii. Depletion of natural resources

iv. Effects on indigenous people

a)

i & iii

b)

ii, iii & iv

c)

i, iii & iv

d)

All of the above

5.

How does the loss of biodiversity lead to an increase in diseases?


i. Plants that have medicinal values may be lost

ii. Animals will lose their habitat and be more exposed to diseases

iii. Indigenous people will lose their homes and contract illnesses

iv. Predators are reduced and more mosquitoes are allowed to breed

a)

i & iii

b)

iii & iv

c)

i & iv

d)

ii & iv

6.
How does low water quality impact aquatic life?
a)
Water turns cloudy and pollutes the aquatic environment
b)
Sunlight is prevented from penetrating the water and plants will die
c)
Sediments settle down and accumulate
d)
Soil is eroded and washed into rivers
7.
The enhanced greenhouse effect ____________________.
a)
Keeps the earth at the right temperature for living things to survive
b)
Involves greenhouse gases like oxygen
c)
Allows for plants to grow in cold weather
d)
Traps more heat in the atmosphere and leads to a rise in the earth's temperature
8.
Which of the following is not how the Singapore public should protect the tropical rainforests?
a)
Follow the guidelines at nature reserves
b)
Join guided tours and trails at nature reserves
c)
Listening attentively in class during lessons on tropical rainforests
d)
Collect specimens from the tropical rainforest and research on them at home
9.

Which of the following statements about buttress roots are true?


i. They grow up to 30m above ground

ii. They have shallow roots underground

iii. They support the heavy weight of trees

iv. They absorb water from deep underground

a)

i & ii

b)

ii & iii

c)

iii & iv

d)

i, ii & iv

10.

Based on the pie chart, which of the following statements is false?

a)

Cattle ranching contributes the most to deforestation

b)

Large-scale agriculture contributes lesser to deforestation than small-scale agriculture

c)

Cattle ranching contributes more to deforestation than the other causes combined

d)

Logging contributes the least to deforestation

11.

Which of the following are the main functions of tropical rainforests?


I. They help regulate the amount of atmospheric gases.

II. They provide valuable natural resources to humans.

III. They are home to wildlife and indigenous people.

a)

I & II

b)

I & III

c)

II & III

d)

I, II and III

12.
Which of the following statements about the causes of deforestation is not correct?
a)
A tropical rainforest can sit on top of valuable mineral reserves
b)
Raising cattle provides economic value to the local people
c)
(Eco)tourism can help generate more revenue than preserving a rainforest
d)
Wealthy countries demand timber highly to build houses and furniture
13.
Which of the following species of plants is not found in the canopy layer of a tropical rainforest generally?
a)
Lianas
b)
Ephiphytes
c)
Mahogany
d)
Ferns
14.
Which of the following is the major driving force of massive deforestation in Malaysia?
a)
Cattle ranching
b)
Oil palm plantation
c)
Soya bean plantation
d)
Fuelwood
15.
Which of the following statements is true for a tropical rainforest?
a)
The trees are conical in shape
b)
The undergrowth is sparse
c)
The trees shed their leaves in winter
d)
Mosses and lichens dominate the forest
16.

Trees in the __________ layer of the rainforest can reach up to 50m tall.

a)

canopy

b)

emergent

c)

undergrowth

d)

middle

17.
The rainforest in Singapore is used ____________________________.
a)
to earn money from tourists
b)
as a source of raw materials like hardwood
c)
as part of the water catchment area to collect rainwater for the reservoirs
d)
as hunting grounds for bird catchers
18.
Rattans and lianas are commonly found on trees in the tropical rainforests because _____________.
a)
They are trying to get to the sunlight
b)
They are trying to find groundwater
c)
They are trying to get as much rain as possible
d)
The tall trees protect them
19.
Which of the following governmental organisation is responsible for implementing guidelines for the public to use the nature reserves in Singapore sustainably?
a)
National Parks Board (NParks)
b)
National Environmental Agency (NEA)
c)
Urban Redevelopment Authority (URA)
d)
Ministry of Forestry
20.
Which of the following is not an adapted feature in tropical plants generally?
a)
Needle-like leaves
b)
Colourful and sweet-smelling fruits
c)
Smooth and thin bark
d)
Leaves with waxy drip tip

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