Environment and Ecology Test Series. We covered all the Environment and Ecology Test Series in this post for free so that you can practice well for the exam.
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Environment and Ecology Mock Test for Students
Which of the following are the primary consumers in an ecosystem? Select the correct answer from the code given below. I. Ants II. Deer III. Fox IV. Tiger Codes
(a) I and II
(b) II and III
(c) I, II, and III
(d) II, III, and IV
Option a – I and II
Concerning the food chains in ecosystems, which of the following kinds of an organism is/are known as decomposer organisms? I. Virus II. Fungi III. Bacteria Select the correct answer using the codes given below.
(a) Only I
(b) II and Ill
(c) I and III
(d) All of the above
Option b – II and III
Which one of the following is the correct sequence of a food chain?
(a) Diatoms – Crustaceans – Herring
(b) Crustaceans – Diatoms – Herring
(c) Diatoms – Herring – Crustaceans
(d) Crustaceans – Herrings – Diatoms
Option a – Diatoms – Crustaceans – Herring
Trophic level-l includes
(a) Herbivorous animals
(b) Carnivorous animals
(c) Omnivorous animals
(d) Green plants
Option d – Green plants
When we eat the flesh of a goat, we are
(a) primary consumer
(b) secondary consumer
(c) tertiary consumer
(d) None of the above
Option b – secondary consumer
With reference to food chains in ecosystems, consider the following statements. I. A food chain illustrates the order, in which a chain of organisms feeds upon each other. II. Food chains are found within the population of a species. III. A food chain illustrates the numbers of each organism, which are eaten by others. Which of the statements given above is/are correct?
(a) Only I
(b) I and II
(c) I, II, and III
(d) None of these
Option a – Only I
The term “biomagnification means
(a) an increase in cancer cells in an organism.
(b) increase in the concentration of toxic substances due to their accumulation at successive trophic levels.
(c) increase in the growth of the population of any community at a faster pace.
(d) process of observing the micro organelles of the body.
Option b – increase in the concentration of toxic substances due to their accumulation at successive trophic levels
Which one of the following organisms is likely to show the highest concentration of DDT, once it has been introduced into the ecosystem?
(a) Grasshopper
(b) Toad
(c) Snake
(d) Cattle
Option c – Snake
Which of the following statements is true about Bionomics? I. It means “management of life.” II. It is synonymous with ecology. III. It stresses the value of natural systems which influence human systems. Codes
(a) Only I
(b) I and II
(c) II and III
(d) I, II, and III
Option c – II and III
Consider the following. I. Bioaccumulation is the increase in the concentration of a pollutant from the environment to the first organisms in a food chain. II. Biomagnification is the increase in the concentration of a pollutant from one link in a food chain to another. Which of the statements given above is/are true?
(a) Only I
(b) Only II
(c) Both (a) and (b)
(d) None of these
Option c – Both (a) and (b)
In ecological succession, the intermediate developmental phase is known as
(a) ecesis
(b) climay
(c) nudation
(d) sere
Option d – sere
Consider the following statements regarding the phosphorus cycle. I. Phosphorus is an essential nutrient for plants and animals. II. They are naturally found in rocks and minerals. III. Plants directly obtain phosphorus from the atmosphere. Which among the statements given above is/are correct?
(a) Only I
(b) Only Ill
(c) Both I and II
(d) None of these
Option c – Both I and II
Which of the following constitutes a food chain?
(a) Grass, Wheat, and Mango
(b) Grass, Goat, and Human
(c) Goat, Cow, and Elephant
(d) Grass, Fish, and Goat
Option c – Grass, Goat, and Human
The correct order in the food chain of the various components of a terrestrial grass ecosystem is
(a) Grass, Grasshopper, Frog, Snake
(b) Grass, Grasshopper, Snake, Frog
(c) Grasshopper, Frog, Grass, Snake
(d) Grasshopper, Snake, Frog, Grass
Option a – Grass, Grasshopper, Frog, Snake
Which among the following statements regarding ecotone is/are correct?
(a) It is a transition area between two ecosystems or between two biological communities.
(b) Species diversity is greater in ecotone when compared with two adjacent zones.
(c) Grasslands, Delta, and Wetlands are examples of ecotone.
(d) All of the above
Option d – All of the above
Who among the following propounded the concept of ecological niche?
(a) Grinnel
(b) Darwin
(c) CC Park
(d) EP Adam
Option a – Grinnel
Which one of the following terms describes not only the physical space occupied by an organism but also its functional role in the community of organisms?
(a) Ecotone
(b) Ecological niche
(c) Habitat
(d) Home range
Option b – Ecological niche
The study of a single species and the environmental factors in its habitat is called
(a) Gynecology
(b) Synecology
(c) Autecology
(d) Ethology
Option c – Autecology
Which among the following statements is incorrect?
(a) Biome refers to large-scale areas of similar flora and fauna and climatic characteristics.
(b) An ecosystem is a set of organisms and abiotic components connected by the exchange of matter and energy.
(c) The ecological niche is a set of only biotic conditions in which a species is able to persist and maintain stable population sizes.
(d) The community consists of all the species living in a particular area.
Option c – The ecological niche is a set of only biotic conditions in which a species is able to persist and maintain stable population sizes
Consider the following statements. I. In a single habitat, there can be many niches that can sustain many organisms. II. Every species has its specialized niche. III. In an ecotone, there are few species that are specialized for that ecotone. Which among the statements given above is/are correct?
(a) Only I
(b) Only Ill
(c) Both I and II
(d) All of the above
Option d – All of the above
The cycling of elements in an ecosystem is called
(a) chemical cycle
(b) biogeochemical cycle
(c) geological cycle
(d) geochemical cycle
Option b – biogeochemical cycle
The flow of energy and nutrition in the biogeochemical cycle mainly took place through
(a) the Gaseous Cycle
(b) Sedimentary Cycle
(c) Both (a) and (b)
(d) None of the above
Option c – Both (a) and (b)
Fixation of Nitrogen implies
(a) the liquification of nitrogen.
(b) the conversion of atmospheric nitrogen into useful compounds.
(c) the conversion of nitrogen into amines.
(d) the solidification of nitrogen gas into the atmosphere.
Option b – the conversion of atmospheric nitrogen into useful compounds
The conversion of Ammonia (NH₂) to Nitrite (NO₂) and then to Nitrates (NO3) is called
(a) Nitrification
(b) Ammonification
(c) Assimilation
(d) Denitrification
Option a – Nitrification
The transitional zone between two distinct communities is known as
(a) Ecotype
(b) Arcade
(c) Ecosphere
(d) Ecotone
Option d – Ecotone
In an ecotone, the species which become abundant are called ( Environment and Ecology Test Series )
(a) edge species
(b) keystone species
(c) endemic species
(d) foster species
Option a – edge species
We covered all the environment and ecology test series above in this post for free so that you can practice well for the exam.
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