mddsem

 

B TAMIL NADU AGRICULTURAL UNIVERSITY B.Sc. (Hons) Horticulture Degree Programme Mid Semester Examination,  2018

Year          : II

Time : 1 hr

Semester : III

Max. Marks: 20

Midsem Question Paper (ENS 201)

PART-A                                (Answer All questions)

[ 20 x 0.5 = 10 ]

Choose the correct answer

[ 8 x 0.5 = 4 ]

1.

Which one of the following is not a green house gas

A)

Nitrous oxide

B)

Water vapour

C)

Treble bond N

D)

Methane

2.

Montreal protocol is more related to

A)

Biodiversity conservation

B)

Control Ozone depleting substances

C)

Control global warming

D)

Control water pollution

3.

Which one of the following can cause thermal pollution?

A)

Residential houses

B)

Power plants

C)

Death of marine organisms

D)

Oil spill

4.

According to Global forest Resource Assessment Report, 2010 of FAO, The  major carbon storage reservoir in the terrestrial ecosystem

A)

Soil

B)

Standing  biomass

C)

Dead organic matter/litter

D)

Woods

5.

Which one of the following is true with reference to marine pollution

A)

It is safe to dump the industrial waste in ocean during winter

B)

Off shore oil exploration does not contribute to marine pollution

C)

Thermal pollution in marine will decrease oxygen content

D)

Direst discharge of sewage into sea is not possible

6.

Consider the following statements: i)             India can be conveniently divided into ten major bio regions ii)            Indian bio-geographic regions are divided based on the basis of  geography, climate , pattern of vegetation and animals iii)           Modern intensive agricultural ecosystems have a lower diversity of crops than traditional silvipastoral farming systems iv)            Areas that are abundant  in species diversity are called ‘hotspots’ of diversity.

A)

i , ii, iii and iv are correct

B)

ii and  iv are correct

C)

I and ii are correct

D)

i,iii and iv are correct

7.

Which one of the following is False with regard to the discipline of Environmental Studies

A)

Multidisciplinary academic field

B)

Environmental science is part of Environmental studies

C)

Include science, commerce/ economics and social sciences also

D)

Environmental studies is part of environmental science

8.

Which one of the following is  a manmade  resource

A)

Solar Sunlight

B)

Lignite Coal

C)

Gravitational force

D)

Plantation forest

Fill in the blanks with correct answer                                        [ 8 x 0.5 = 4]

9.

Industrial waste contains highly toxic elements such as

A)

Cobalt

B)

Cadmium

C)

Boron

D)

Antimony

10.

It is estimated that usage of worldwide available fresh water for domestic purpose  _________

A)

8%

B)

100%

C)

22%

D)

70%

11.

Person may have excess food but still diet suffers from due to nutritional imbalance

A)

Malnutrition

B)

Under nutrition

C)

Over nutrition

D)

Imbalanced nutrition

12.

Gene bank for wild plants.

A)

Temperate forest

B)

Sacred groove

C)

Plantation forest

D)

Orchards

13.

An example for renewable  resource of energy

A)

Construction waste

B)

Rubbish

C)

Coal

D)

Sand

14.

Detritus food chains food chain that starts with

A)

Producers

B)

Primary consumer

C)

Fallen litters

D)

Parasites

15.

Mine spoil refers to

A)

Earth and rock excavated from mine

B)

Waste from mine processing

C)

Reclaimed land

D)

Land degraded by mining

16.

According to ARSAC, the wetland of Assam are under severe threat mainly due to

A)

Water stagnation

B)

Mining for coal

C)

Water hyacinth

D)

Tribal peoples

17.

Match the following                                                                             [ 1 x 2 = 2 ]

a) Water

-

i) Remote  area

b) Fertilizer

-

ii) London smog

c)  Air

-

iii) Eutrophication

d) Solar

-

iv) Renewable source

A)

a - iv, b - iii, c - ii, d - i

B)

a - i, b - ii ,c - iv, d – iii

C)

a - ii, b - i, c - iii ,d - iv

D)

a - iv, b - iii ,c - i ,d – ii

PART – B                                            (Answer All questions)                       [ 20 x 0.5 = 10 ]

Answer the questions based on the below wastes (18 – 21)      [4 x 0.5 = 2]. A.   Hospital solid waste B.   Agricultural waste C.   Municipal solid waste D.   Construction waste E.   Demolition waste F.    Rubbish G.   Electronic waste H.   Processing waste

18.

Non-hazardous waste that needs resource recovery

A)

E

B)

B

C)

C

D)

D

19.

Identify the  waste for incineration

A)

H

B)

B

C)

F

D)

D

20.

Identify the waste for  land filling

A)

A

B)

B

C)

C

D)

D

21.

Identify the waste for recycling

A)

A

B)

B

C)

G

D)

D

Answer The Questions (22 – 25)                                                 [ 4 X 0.5 = 2 ]

22.

Out of total electricity production, contribution of nuclear energy accounts about

A)

17%

B)

50%

C)

75%

D)

1%

23.

When a source of pollution cannot be readily identified, such as agricultural runoff, acid rain, etc, they are said to be ________of pollution

A)

Point  source

B)

Non-point sources

C)

Mobile source

D)

Stationary source

24.

Unit of measurement of Dissolved oxygen?

A)

Mg/L

B)

ppb

C)

%

D)

dS m‑1

25.

Ambur and Vaniambadi in TN are related to _________pollution

A)

Paper mill effluent

B)

Textile and dye effluent

C)

Tannery and leather industry

D)

Municipal effluent

Read the following passage and answer the questions (26 – 29) [4 x 0.5 = 2]   It has been estimated that 50,000 endemic plants which comprise 20% of global plant life, probably occur in only 18 ‘hot spots’ in the world. Countries which have a relatively large proportion of these hot spots of diversity are referred to as ‘megadiversity nations’.

26.

Example for natural resource

A)

Botanical garden

B)

National park

C)

Zoological park

D)

Gene bank

27.

Example for Insitu conservation

A)

National park

B)

Temperate forest

C)

Amazon basin

D)

Tropical forest

28.

The species found in only a particular place in abundant number which are not found elsewhere

A)

Endemic species

B)

Rare species

C)

Endangered

D)

Extinct

29.

Which one is endangered species?

A)

Gharial

B)

Kangayam breed

C)

Gir

D)

Holestein frezein

Answer the questions (30 – 33)                                                     [ 4 x 0.5 = 2 ] In the years following the publication of Silent Spring in 1962, the book has inspired controversy and has initiated a major change in thinking about the safety of using pesticides and other toxic chemicals.

30.

Cigarette smoking is responsible for the greatest exposure to ____________pollution

a)

Carbon monoxide

b)

Carbon dioxide

c)

Sulphur dioxide

d)

Methane

31.

Volatile organic compounds such as benzene, formaldehyde and toxic particulates such as lead, cadmium in environment can cause _______

a)

Chest pain

b)

Mutations

c)

Collapse, Coma, death

d)

Head ache and blurred vision

32.

According to TNPCB following account for 75% of the pollution load in rivers

a)

Agricultural Run off

b)

Industrial effluents

c)

Eutrophication

d)

Sewage and municipal effluents

33.

The World health Organization (WHO) which rates only mega cities of the world has rated __________as the fourth most polluted city in the world

a)

Delhi

b)

Chennai

c)

Culcutta

d)

Coimbatore

Read the following passage and answer the questions (34 – 37) [ 4 x 0.5 = 2 ]   Indonesia is located in Southeast Asia, with around 17,000 islands, and has many diverse forests there. In the 1900s, Indonesia used to have 84% of forests covering their land. However, in the 1970s, deforestation kept accelerating. From 170 million hectares of forest cover in 1900 to 98 million hectares of forests left in the 20th century, Indonesia has been rapidly losing much of its forests. .

34.

In 1970 Indonesia used valuable resources from where to benefit their economy

A)

Solar  energy

B)

Coal

C)

Hydro  from Dam

D)

Forest

35.

Since the 1980s, Indonesia has increased their production of ________ industry by 700%

A)

Pulp and paper

B)

Iron and steel

C)

Wood processing

D)

Coal mining

36.

More over the developmental activities in   Indonesia mostly concentrated in ---------------- production after 1980s

A)

Oil palm production

B)

Furniture processing

C)

Hydropower

D)

Thermal power from coal

37.

Developmental activities in Indonesia lead to -----------------

A)

Displacement of Tribals

B)

Global emission of carbon

C)

Soil pollution

D)

Creation of Municipal solid waste