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Ecosystem Mcqs - practice purpose notes only

practice purpose notes only
Course

Secondary education (EDU 329)

18 Documents
Students shared 18 documents in this course
Academic year: 2022/2023
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SRM Institute of Science and Technology

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MCQ9s for ecosystem

  1. The natural place of an organism or community is known as

a) Niche b) Biome

c) Habitat d) Habit

  1. Which is the renewable exhaustible natural energy resource?

a) Coal b) Petroleum

c) Kerosene d) Biomass

  1. According to Shelford9s Law of Tolerance, the organisms wide environmental factor tolerance limit show

a) Narrow distribution with low population size b) Wide distribution with high population size

c) Narrow distribution with high population size d) Wide distribution with low population size

  1. Plants growing under direct sunlight are known as

a) Heliophytes b) Sciophytes

c) Psamophytes d) Dicots

  1. Plants growing under shade are known as

a) Psamophytes b) Sciophytes

c) Heliophytes d) Monocots

  1. An orchid living on a tree exhibits

a) Predator b) Mutualism

c) Commensalism d) Parasitism

  1. Which statement is correct with respect to the food chain?

a) Every component of the food chain forms a trophic level b) Inter-relation between different food chains is known as a food web

c) All the chains formed by nutritional relations is used to understand energy flow. d) All of the above

  1. The process of vernalization is practised in

a) Cold countries b) Hot countries

c) Only in sub-tropical countries d) Only in tropical countries

  1. Which of the following requires maximum energy?

a) Secondary consumer b) Decomposer

c) Primary consumer d) Primary producer

  1. The bottom area where production is less than respiration in a pond ecosystem is termed as

a) Profundal zone b) Tidal zone

c) Benthic zone d) Limnetic zone

  1. Which is not the characteristic of 8r9 selected species?

a) Reproduce quickly b) Parental care

c) A low survival rate of progenies d) Produce a large number of progenies

  1. Which is not the characteristic of a population?

a) Natality b) Mortality

c) Stratification d) Sex ratio

  1. Select a non-denitrifying bacteria

a) Pseudomonas aeruginosa b) Thiobacillus

c) Thiobacillus denitrificans d) Bacillus ramosus

  1. Which one is a 8K9 selected species?

a) Aspergillus b) Human

c) Taraxacum d) Grass

  1. All species of Lemur are endemic to which area?

a) Madagascar b) Seychelles Island

c) Galapagos Island d) New Caledonia

  1. The upper part of an aquatic ecosystem contains

a) Nekton b) Plankton

c) Benthos d) both (1) and (2)

  1. What type of food chain is it?

dead animals → blowfly maggot → maggots → frog → snake

a) Detrital food chain b) Decomposer food chain

c) Predator food chain d) Grazing food chain

  1. Identify the mismatched pair

a) Tundra – Permafrost b) Savanna – Acacia trees

c) Prairie – Epiphytes d) Coniferous forest – Evergreen tree

  1. <The pyramid of energy is always upright= states that

a) The energy conversion efficiency of herbivores is better than carnivores b) The energy conversion efficiency of carnivores is better than herbivores

c) Producers have the lowest energy conversion efficiency d) Energy conversion efficiency is the same in all trophic levels

  1. The population of birds declined in an area where DDT was extensively used. Why?

a) The birds stopped laying eggs b) The eggs laid by the birds did not hatch

c) The snakes ate the eggs d) The DDT spray killed all the birds

  1. Which of the following lake zones has phytoplanktons in abundance?

a) Littoral zone b) Benthic zone

c) Limnetic zone d) Profundal zone

  1. Plant species with a wide range of genetic distribution evolve into a local population known as

a) Ecotype b) Population

c) Ecosystem d) Biome

  1. dB is the abbreviation used for the quantitative expression of

a) The density of bacteria in a medium b) A Particular Pollutant

c) Dominant Bacillus in a culture d) A pesticide

  1. The eggshell of birds becomes thin by the pollution from pesticides due to the interference in the activity of

a) Calmodulin b) MgATPase

c) CaATPase d) Calcium

40. The sequence of changes in the community and its non-living environment over a period

of time is

a) Niche

b) Succession

c) Alterations

d) Neo-ecology

  1. Which one of the following would appear as the pioneer organisms on bare rocks? a) Green algae b) Lichens

c) Liverworts d) Mosses 42. Secondary Succession takes place on/in_____ a) Degraded forests b) Newly created pond

c) Newly cooled lava d) Bare rocks

  1. The natural reservoir of phosphorus is_______ a) Fossils b) Sea water

c) Rocks d) Animal bones

  1. The second stage of hydrosere is occupied by plants like________ (a) Salix (b) Vallisneria

(c) Azolla (d) Typha

  1. Which one of the following statements is correct for secondary succession? (a) It is similar to primary succession except that it has a relatively fast pace. (b) It begins on a bare rock.

(c) It occurs on a deforested site (d) It follows primary succession.

  1. Which ecosystem has the maximum biomass________ (a) Forest ecosystem (b) Pond ecosystem

(c) Grassland ecosystem (d) Lake ecosystem 47. If 20 J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain________

Plant > Mice > Snake > Peacock a) 0 J b) 0 J

c) 0 J d) 0 J

  1. Of the total incident solar radiation the proportion of PAR is_______ a. More than 80% b. About 60%

c. About 70% d. Less than 50%

  1. Presence of plants arranged into well defined vertical layers depending on their height can be seen be in______ a. Tropical Savannah b. Grassland

c. Tropical Rain Forest d. Temperate Forest

  1. The term ecosystem was coined by_______ a) Warming b) Tansle

c) Odum d) Haeckel

  1. In an ecosystem the rate of production of organic matter during photosynthesis is termed as_________ a) Net primary productivity b) Gross princary productivity

c) Secondary productivity d) Net Productivity

  1. Secondary productivity is the rate of formation of new organic matter by________ (a) Decomposers (b) Parasite

(c) Producers (d) Consumer

  1. The breakdown of detritus into small particles by earthworm is a process called________ a) Catabolism b) Fragmentation

c) Mineralisation d) Humification

  1. The biomass available for consumption by herbivores and decomposers is called_____ (a) Secondary productivity (b) Standing crop

a) Eat grassland leaves

b) Die due to starvation

c) Hunt for other animals

d) Fasting until they find deer

65. In the food relationship, where the tiger eats the deer and the deer eats plants. Which of

the following conditions is true?

a) The tiger is the prey

b) The tiger is the primary consumer

c) The deer is the predator

d) The deer is the prey

66. Which of the following condition is true about food chain?

a) Provide more energy for next

trophic level

b) Provides food for succeeding

organisms

c) Consume energy from next trophic

level

d) Do not pass energy to next trophic

level

67. Carrot->rabbit->fox is an example of_______________________

a) Food web

b) Food chain

c) Food cycle

d) Food round

68. Which of the following factor diminishing as food chain proceeds?

a) Pressure

b) Energy

c) Nutrition

d) Temperature

69. Which of the following organisms begins marine food chains?

a) Phytoplankton

b) Fishes

c) Zooplankton

d) Corals

70. Why is a food web more realistic way of portraying an ecosystem than a food chain?

a) Because it shows the

relation of organisms with

each other in a habitat

b) Because food chains

use only a small sampling

of organisms

c) Because it doesn9t shows the relation of

organisms with each other in a habitat

d) Because it compares the number of consumers

to the number of micro-organisms.

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Ecosystem Mcqs - practice purpose notes only

Course: Secondary education (EDU 329)

18 Documents
Students shared 18 documents in this course

University: Sarhad University of Science and Information Technology

Was this document helpful?
MCQ9s for ecosystem
1. The natural place of an organism or community is known as
a) Niche
b) Biome
c) Habitat
d) Habit
2. Which is the renewable exhaustible natural energy resource?
a) Coal
b) Petroleum
c) Kerosene
d) Biomass
3. According to Shelford9s Law of Tolerance, the organisms wide environmental factor tolerance
limit show
a) Narrow distribution with low
population size
b) Wide distribution with high population
size
c) Narrow distribution with high
population size
d) Wide distribution with low population
size
4. Plants growing under direct sunlight are known as
a) Heliophytes
b) Sciophytes
c) Psamophytes
d) Dicots
5. Plants growing under shade are known as
a) Psamophytes
b) Sciophytes
c) Heliophytes
d) Monocots
6. An orchid living on a tree exhibits
a) Predator
b) Mutualism
c) Commensalism
d) Parasitism

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