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FOR NET HTET MCQs on Ecology & Biodiversity Conservation

1. When the full potential of physical, chemical and biological factors, a species can use if there is no competition, it is called
(A) Fundamental niche
(B) Ecological niche
(C) Realized niche
(D) Competitive exclusion


2. Which of the following organisms can act as primary consumer, secondary consumer, tertiary consumer or scavenger in different types of food chains?
(A) Raven
(B) Tiger
(C) Snake
(D) Phytoplanktones


3. The tendency of biological systems to resist change and to remain in a state of equilibrium is called
(A) Homeostatis
(B) Feedback mechanism
(C) Ecological efficiency
(D) Carrying capacity


4. If different categories of threatened species are written in a sequence, what is the correct order?
(A) Extinct-> Vulnerable -> Rare -> Endangered
(B) Vulnerable -> Rare -> Endangered -> Extinct
(C) Vulnerable -> Rare -> Extinct -> Endangered
(D) Rare -> Vulnerable -> Endangered -> Extinct


5. Which of the following is not a type of ex situ conservation method?
(A) Botanical garden
(B) Zoological park
(C) Wildlife sanctuaries
(D) Gene banks


6. As a consequence of succession the P/B ratio (Gross production /
Standing crop biomass) is changed. It is
(A) High during developmental stages and low at mature stage.
(B) Low during developmental stages and high at mature stage.
(C) > 1 or < 1 at developmental stages and approximately 1 at mature stage.
(D) Remaining unchanged at all stages.


7. In which part of India, the tropical Western Ghats are situated?
(A) Punjab
(B) Rajasthan
(C) Gujarat
(D) Kerala


8. Variety of different species, genetic variability among individuals within each species and variety of ecosystems constitute the so calledwww.netugc.com
(A) Species diversity
(B) Genetic diversity
(C) Biological diversity
(D) Ecological diversity


9. Depending upon the amount of net primary productivity the various ecosystems can be arranged in a decreasing sequence of yield.
(A) Tropical seasonal forest – Tropical rain forest – Temperate Grassland – Woodland and Shrubland.
(B) Tropical seasonal forest – Tropical rain forest – Woodland and Shrubland – Temperate Grassland
(C) Tropical rain forest – Temperate Grassland – Woodland and Shrubland – Tropical seasonal forest.
(D) Tropical rain forest – Tropical seasonal forest – Woodland and Shrubland – Temperate Grassland.


10. Which of the following is a correct sequence of secondary seral vegetation development on any habitat?
(A) Ecesis – Invasion – Aggregation – Stabilization
(B) Ecesis – Aggregation – Invasion – Stabilization
(C) Aggregation – Invasion – Ecesis– Stabilization
(D) Invasion – Ecesis – Aggregation – Stabilization


11. What is common feature among the following?
Abiesdelavayi
Aconitum diennorrhzum
Adinandragriffthii
Aglaiaperviridis
(A) All have been extinct.
(B) All are gymnosperms.
(C) All are identified as endangered species.
(D) All are angiosperms.


12. Raunkiaer’s normal biological spectrum for phanerogamic flora of the world exhibits one of the following sequences of occurrence (%) of different life forms.
(A) Phanerophytes, Hemicryptophytes, Therophytes, Cryptophytes, Chaemophytes.
(B) Phanerophytes, Hemicryptophytes, Therophytes, Chaemophytes, Cryptophytes.
(C) Phanerophytes, Hemicryptophytes, Cryptophytes, Chaemophytes, Therophytes.
(D) Phanerophytes, Chaemophytes, Hemicryptophytes, Cryptophytes, Therophytes.


13. One of the following categories of earthworms is most suitable for wasteland reclamation.
(A) Epigeic
(B) Anecic
(C) Endogeic
(D) None of the above


14. How many mega-bio-diverse countries have been identified in the world?
(A) 2
(B) 12
(C) 17
(D) 35


15. Which one of the following is an Exsitu method of biodiversity conservation?
(A) Seed storage
(B) DNA Bank
(C) Tissue culture
(D) All the above

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