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| 01 | 10th Class Biology Mcqs Chapter 10 | 02 | 10th Class Biology Mcqs Chapter 11 |
| 03 | 10th Class Biology Mcqs Chapter 12 | 04 | 10th Class Biology Mcqs Chapter 13 |
| 05 | 10th Class Biology Mcqs Chapter 14 | 06 | 10th Class Biology Mcqs Chapter 15 |
| 07 | 10th Class Biology Mcqs Chapter 16 | 08 | 10th Class Biology Mcqs Chapter 17 |
| 09 | 10th Class Biology Mcqs Chapter 18 | 10 | 10th Class Biology Mcqs Chapter 19 |
| 11 | 10th Class Biology Mcqs Chapter 20 | 12 | 10th Class Biology Mcqs Chapter 21 |
CHAPTER 16
MAN AND HIS ENVIRONMENT
Encircle the most appropriate answer from the following options
1 Which of the following is the abiotic component of an ecosystem?
(a) Producers
(b) Herbivores
(c) Carnivores
(d) Oxygen
2) When we eat the onion, our trophic level is;
(a) Primary consumer
(b) Secondary Consumer
(c) Decomposer
(d) Producer
3) Identify the correctly matched pair:
(a) Rainfall- biotic factors in ecosystem
(b) Global warming- formation of Fossil fuels
(c) Renewable natural resources-air
(d) Corn- secondary consumer
4) In the food chain tree caterpillar robin — hawk – – coyote, which is secondary consumer?
(a) Caterpillar
(b) Robbin
(c) Hawk
(d) Coyote
5) In an ecosystem he flow o is one way, while is/are constantly recycled.
(a) Minerals, energy
(b) Energy, minerals
(c) Oxygen, energy
(d) Glucose, water
6) In the food chain “grass rabbit fox bear mushroom”, how many types of decomposers are there?
(a) 1
(b) 2
(c) 3
(d) 4
7) Organisms in the ecosystem that are responsible for the recycling of plant and animal wastes are;
(a) Consumers
(b) Producers
(c) Decomposers
(d) Competitors
8) Which form of Nitrogen is taken by the producers of the ecosystem?
(a) Nitrogen gas
(b). Ammonia
(c) Nitrites
(d) Nitrates
9) The type of environment in which a particular species lives is called;
(a) Ecosystem
(b) Habitat
(c) Biosphere
(d) Community
10) Which of the following organisms are decomposers?
(a) Fungi
(b) Algae
(c) Bacteria
(d) Both a & c.
11) The lowest trophic level of an ecosystem always includes:
(a) Herbivores
(b) Carnivores
(c) Producers
(d) Decomposers
12) Habitat destruction can result in a loss of:
(a) Species
(b) Population
(c) Community
(d) Ecosystem•
13) The Type of symbiotic relationship in which Ong member get benefit and other is unaffected is called:
(a) Parasitism
(b) Mutualism
(c) Commensalism
(d) Predation
14) Which one is not an example of abiotic factor?
(a) Decomposers
(b) Light
(c) Water
(d) Soil
15) An organism that actively hunts other organisms is called:
(a) Prey
(b) Predator
(c) Parasite
(d) Host
16) The type of symbiotic relationship in which one member get bcncfit and other is harmed is called:
(a) Parasitism
(b) Mutualism
(c) Commensalism
(d) Predation
17) Organisms that make their own food with help of sunlight, C02 and 1120 are called;
(a) Consumers
(b) Producers
(c) Decomposers .
(d) Predators
18) The conversion of ammonia to nitrates is carried out by soil bacteria. This process is called:
(a) Nitrification
(b) Denitrification
(c) Nitrogen fixation
(d) Assimilation
19) A group of organisms, similar to one another, which can interbreed in nature and produce fertile offspring:
(a) Species
(b) Genus
(c) Family
(d) Population
20) Water, soil, air, temperature wind and sunlight are examples of:
(a) Biotic factors
(b) Biomass
(c) Environment
(d) Abiotic factors
21) A relationship between two organisms in which individual of one species may kill and eat individuals or other species is called:
(a) Symbiosis
(b) Competition
(c) Predation
(d) Mutualism
22) A relationship between species in which both species benefit is called:
(a) Parasitism
(b) Mutualism
(c) Symbiosis
(d) Commensalism
23) The self-sufficient unit of an environment that is formed as a result of interaction between its biotic community and its abiotic components is known as:
(a) Biosphere
(b) Habitat
(c) Ecosystem
(d) Food web
24) A network of all the feeding relationships in an ecosystem is called:
(a) Food chain
(b) Food web
(c) Trophic level
(d) Energy flow
25) The thickness of biosphere is:
(a) 02 km
(b) 20 km
(c) 50 km
(d) 200 km
26) _ get solar energy and transform it into chemical energy by the process of photosynthesis.
(a) Decomposers
(b) Producers
(c) Consumers
(d) Predators
27) The materials flow from one trophic level to the next by means of;
(a) Food chains
(b) Food web
(c) Both a & b
(d) None
28 The base of food chain is always formed by;.
(a) Producers
(b) Consumers
(c) Decomposers
(d) Heterotrophs
29) In 1927, developed the concept of ecological pyramids.
(a) Kelvin
(b) Lamarck
(c) Charles Elto
(d) Darwin
30) atom is the principal building block of many kinds of biomolecules.
(a) Oxygen
(b) Carbon
(c) Hydrogen
(d) Nitrogen
31) Which one of the following is not an example of fossil fuels?
(a) Plants
(b) Peat
(c) Coal
(d) Natural Gas
32) The major process that brings carbon from atmosphere into living world is:
(a) Photosynthesis
(b) Respiration
(c) Both a & b
(d) None
33) Nitrogen is an important component of:
(a) Proteins
(b) Nucleic Acid
(c) Lipids
(d) Both a & b
34) is the breakdown of the proteins of dead organisms to ammonia.
(a) Ammonification
(b) Nitrification
(c) Denitrification
(d) None
35) The utilization of nitrates by organisms is called:
(a) Nitrification
(b) Ammonification
(c) Assimilation
(d) Denitrification
36) Which one of the following is not temporary parasite?
(a) Mosquito
(b) Virus
(c) Leech
(d) Bed bug
37) Which one of the following is not an endoparasite?
(a) Ascaris
(b) Plasmodium
(c) Entamoeba
(d) Mosquito
38) An epiphyte is an example ow
(a) Parasitism
(b) Mutualism
(c) Commensalism
(d) Symbiosis
39) Which one is an example of epiphyte?
(a) Mosquito
(b) Orchid
(c) Rhizobium
(d) Plasmodium
40) Which, of the following is not an example of green house gas?
(a) C02
(b) Methane
(c) Oxygen
(d) Nitrous Oxide
41) The current level of urbanization in Pakistan is about which is not high by global standards.
(a) 23 %
(b) 32%
(c) 36%
(d) 39%
42) Abiotic component of ecosystem is;
(a) Producers
(b) Herbivores
(c) Carnivores
(d) Oxygen
43) A symbiotic interaction in which both partners get benefits are known as ;
(a) Mutualism
(b) Commensalism
(c) Parasitism
(d) Predation
44) The consumers that eat animal flesh as well as plants and plant products are
called:
(a) Herbivores
(b) Carnivore
(c) Omnivores
(d) Insectivores
45) Living of nitrogen fixer bacteria in the root nodules of leguminous plants is an example of;
(a) Predation
(b) Parasitism
(c) Mutualism
(d) Commensalism
46) The perfect cycle is;
(a) Carbon cycle
(b) nitrogen.cycle
(d) All of the above
47) Nitrogenous waste includes;
(a) Ammonia
(b) Urea
(c) Uric acid
(d) All of the above
48) Plants show competition for;
(a) Space
(b) Light
(c) Water and Minerals
(d) All of the above
49) Flow of energy is always;
(a) Unidirectional
(b) Two directional
(c) Multidirectional
(d) No directional
50) IPCC stands for;
(a) International project of climate change
(b) Intergovernmental Project of climate change
(c) Intergovernmental panel on climate change
(d) International panel on climate change
51) The temperature of Earth’s surface has increased per decade in the past 30 years;
(a) 0.1°C
(b) 0.2°C
(c) 0.3°C
(d) 0.4°C
52) Since 1800, amount of C02 in atmosphere has increased about
(a) 20%
(b) 30%
(c) 40%
(d) 50%
53) Since 1800, amount of nitrous oxide has increased about;
(a) 2%
(b) 6%
(c) 8%
(d) 10%
54) According to estimate at the current rate of increase, the average global temperature will the next 100 yea
(a) 8°C
(b) 6-8°C
(c) 3-8°C
(d) 528°C
55) Pakistan growth rate in 1991 was;
(a) 2%
(b) 2.50%
(c) 2.69%
(d) 2.89%
56) In 2003, a survey on tanneries in Kasur City showed that residents suffered from cancer infections of kidney or loss of eyesight.
(a) ¼
(b) ⅔
(c) ⅓
(d) ¼
57) Recycling of one tonne paper can save.
(a) 10 trees
(b) 15 trees
(c) 18 trees
(d) 17 trees
58) people are at risk of dengue.
(a) 1.5 billion
(b) 2.5billion
(c) 3.5 billion
(d) 2.5 million
59) Scientists fear that sea level is rising upto per year.
(a) 0.8 cm
(b) 10 cm
(c) 0.9 cm
(d) 9cm
60) It is estimated •that Maldives might become uninhabitable within;
(a) 50 years
(b) 80 years
(c) 100 years
(d) 130 years
61) When living and nonliving interact to produce a stable system in which exchange of material with flow of energy takes place, it forms a/an:
(a) Environment
(b) stable community
(c) Ecosystem
(d) Ecological succession
62) The living organisms which cannot prepare their own food -but obtain ready made food from others, are;
(a) Primary and Secondary consumers
(b) Secondary and tertiary consumers
(c) Only pnmary consumers
(d) All types of Consumers.
63) How many tanneries are operating in Kasur city;
(a) More than 300
(b) More than 200
(c) 500
(d) 1000
64) Upper layer of the atmosphere is called;
(a) Biosphere
(b) Lithosphere
(c) Hydrosphere
(d) Stratosphere
65) At which trophic level in a food chain, carnivores get food?
(a) First trophic level
(b) Second trophic level
(c) Fourth trophic level
(d) Third trophic level
66) Fungi digest the dead organic matter with the help of;
(a) Enzymes
(b) Acids
(c) Hormones
(d) Bases
67) Which is an ectoparasite?
(a) Liver fluke
(b) Ascaris
(c) Tapeworm
(d) Leech
68) The favourable variations tend to be
(a) Eliminated
(b) Passed to next generation
(c) Unexpressed
(d) Changed
69) Habitat is an example of;
(a) Biological character
(b) Chemical character
(c) Physical Character
(d) Behavioural character
70) A- group of organisms yhich can interbreed freely in nature to produce fertile offspring is called;
(a) Population
(b) Community
(c) Species
(d) Ecosystem
71) An Aquarium is an example of
Ecosystem;
(a) Natural
(b) Artificial
(c) Aquatic
(d) Terrestrial
72) Graphic representation of the number of individuals per unit area at various trophic levels of a food chain is called
(a) Pyramid of Biomass
(b) Pyramid of numbers
(c) Pyramid of energy
(d) Food web
73) More than normal denitrification change the richness of soil as;
(a) Increase
(b) Less
(c) Bad
(d) Finished
74)) An example of Carnivorous plants is:
(a) Rose plant
(b) Mosses
(c) Pitcher plant
(d) Ferns