Tuesday, December 24, 2013

CBSE Class 9 - Science - CH6 - Natural Resources (MCQs)

Natural Resources
(MCQs)
CBSE Class 9 - Science - CH14 - Natural Resources (Worksheet)
Ozone Layer
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Q1: Corbett National Park is famous for?

(a) Neel Gai
(b) Snakes
(c) Rhinoceros
(d) Tigers


Q2: Green plants of an ecosystem are called.

(a) Producers
(b) Decomposers
(c) Consumers
(d) None of these


Q3: Energy flow in the ecosystem is

(a) unidirectional
(b) bidirectional
(c) multidirectional
(d) none of these


Q4: Two important groups of detritivores are

(a) Animals and Plants
(b) Prokaryotes and Algae
(c) Prokaryotes and Fungi
(d) Plantae and Prokaryotes



Q5: Which of the following is a nonrenewable energy source?

(a) natural gas
(b) solar energy
(c) wind energy
(d) tidal energy


Q6: Which of the following organisms is incorrectly paired with its trophic level?
(a) cyanobacteria - primary producer
(b) honey bee - primary consumer
(c) zooplankton - primary producer
(d) eagle - tertiary consumer


Q7: Where do terracing help the most in soil conservation?

(a) Hill regions
(b) Wet areas
(c) Deserts
(d) Plains


Q8: Which trophic level is considered to be the most vulnerable to extinction?
(a) producer level
(b) primary consumer level
(c) secondary consumer level
(d) tertiary consumer level


Q9: In which sphere of the environment Ozone layer is located?
(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Thermosphere


Q10: Solar radiations heat up:
(a) Land faster than the water bodies
(b) Land slower than the water bodies
(c) Equally both land and water bodies
(d) Neither land nor water bodies



Answers:
1: (d) Tigers
2: (a) Producers
3: (a) unidirectional
4: (c) Prokaryotes and Fungi
5: (a) natural gas
6: (c) zooplankton - primary producer
7: (a) Hill regions
8: (d) tertiary consumer level
9: (b) Stratosphere
10: (a) Land faster than the water bodies





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