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Mock Test of NEET Biology for Students
The population of fish in a pond is 200 and 100 of them died in a week due to the release of toxicants in the pond. Calculate the death rate of fish.
(A) 20 fish/week
(B) 0.5 fishes/week
(C) 50 fish/week
(D) 5.1 fishes/week
Option b – 0.5 fishes/week
Which of the following statement/s is/are CORRECT? i. Alexander Von Humboldt observed that species richness in a region increases up to a limit with increasing explored area. ii. The rivet popper hypothesis was put forth by David Tilman. iii. Robert May gave a more realistic estimate of the number of global species.
(A) i and iii are correct
(B) i, ii and iii are incorrect
(C) only ii and iii are correct
(D) i, ii and iii are correct
Option a – i and iii are correct
The pyramid of energy is
(A) always upright
(B) always inverted
(C) mostly upright but sometimes inverted
(D) never upright
Option a – always upright
Identify the INCORRECT statement.
(A) In Opuntia, photosynthesis is performed by a flattened stem.
(B) Seals possess blubber below the skin as an adaptation to minimize heat loss.
(C) According to Allen’s rule, mammals found in desert regions have shorter ears and limbs.
(D) Kangaroo rats have the ability to concentrate their urine and minimize water loss.
Option c – According to Allen’s rule, mammals found in desert regions have shorter ears and limbs.
……… is NOT an invasive weed species.
(A) Water hyacinth
(B) Lantana camara
(C) Parthenium
(D) Clarius gariepinus
Option d – Clarius gariepinus
The natural reservoir of sulfur is
(A) seawater
(B) rock
(C) fossil fuels
(D) atmosphere
Option b – rock
In primary succession in water, the small phytoplanktons are replaced with time by
(A) marsh meadow
(B) sedges
(C) rooted submerged plants
(D) grasses
Option c – rooted submerged plants
Complete the analogy with respect to population interactions. Orchid Ophrys : Bees:: Whale: ………..
(A) Calotropis
(B) Cattle egrets
(C) Sea anemone
(D) Barnacles
Option d – Barnacles
Assertion: Sparrow occupies more than one trophic level in an ecosystem. Reason: Sparrow is a primary consumer when it eats fruits, seeds, and peas and a secondary consumer when it eats insects and worms.
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(C) The assertion is true but the reason is false.
(D) Both assertion and reason are false.
Option a – Both assertion and reason are true and the reason is the correct explanation of assertion.
Which of the following includes extinct species?
(A) Dodo, Stellar’s sea cow, Clouded leopard
(B) Great Indian Bustard, Dodo, Quagga
(C) Tasmanian tiger, Stellar’s COW. sea Quagga
(D) Asiatic lion, Great Indian Bustard. Clouded leopard
Option c – Tasmanian tiger, Stellar’s COW. sea Quagga
(A) G.F. Gause
(B) Herbert Boyer
(C) Stanley Cohen
(D) Charles Darwin
Option a – G.F. Gause
The World Summit on sustainable development in Johannesburg, South Africa was held in the year
(A) 1965
(B) 1972
(C) 1992
(D) 2002
Option d – 2002
Read the following statements and select the correct option. Statement I: Fine particulates of size 2.5 micrometers or less in diameter can cause breathing and respiratory symptoms. Statement II: Automobiles with catalytic converters emit large amounts of poisonous gases.
(A) Statement I is correct, and Statement II is incorrect.
(B) Statement I is incorrect, and Statement II is correct.
(C) Both Statements I and II are correct.
(D) Both Statements I and II are incorrect.
Option a – Statement I is correct, and Statement II is incorrect.
If + indicates beneficial interaction and ‘-‘ detrimentation, then identify the INCORRECT match with respect to population interactions and signs assigned to them.
(A) Competition: ‘-‘ and ‘-‘
(B) Mutualism: +’ and ‘+’
(C) Amensalism: ‘+’and ‘-‘
(D) Parasitism: “+’ and ‘-‘
Option c – Amensalism: ‘+’and ‘-‘
Identify the INCORRECT match.
(A) Increased biological oxygen demand – Less polluted water bodies
(B) Algal bloom – Deterioration of water quality and fish mortality
(C) High concentrations of DDT – Decline in bird population due to biomagnification.
(D) Increased level of greenhouse gases – Global warming
Option a – Increased biological oxygen demand – Less polluted water bodies
The phenomenon of the natural aging of a lake by biological enrichment of its water is
(A) biomagnification
(B) eutrophication
(C) bioremediation
(D) biofortification
Option b – eutrophication
The National Forest Policy (1988) of India has recommended ………% forest cover for the plains.
(A) 10
(B) 21
(C) 33
(D) 67
Option c – 33
Polyblend is
(A) fine powder of recycled modified plastic
(B) a mixture of biodegradable wastes and vermicompost
(C) a mixture of non-biodegradable waste and bitumen
(D) fine powder of non-recyclable plastic
Option a – fine powder of recycled modified plastic
Read the following statements and select the correct option. i. Ozone in the lower atmosphere is known as good ozone. ii. Montreal Protocol, an international treaty was signed to control the emission of ozone-depleting substances. iii. The thickness of ozone is measured in the terms of Dobson units. iv. Ozone depletion can cause a decreased amount of UV radiation to reach the Earth.
(A) i and ii are correct
(B) ii and iii are incorrect
(C) iii and iv are correct
(D) i and iv are incorrect
Option d – i and iv are incorrect
IUCN maintains a Red Data Book which contains information about
(A) exotic plant species
(B) endangered plant and animal species
(C) extinct animal species
(D) economically important animal species
Option b – endangered plant and animal species
The most widely used device to remove particulate matter present in the exhaust from a thermal power plant is
(A) lime spray
(B) electrostatic precipitator
(C) smelter
(D) smokestacks
Option b – electrostatic precipitator
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