Living Environment Regents Review Practice Ecology Question 2
Wednesday, 24 June 2009 11:47
Name one major limiting abiotic factor limiting the growth of autotrophs at great depths in an ocean
A)Type of seafloor
B)Availability of minerals
C)Amount of light
D)Absence of biotic factors
Correct Answer: Option C – Amount of Light
Presence of light is an important factor for the growth and survival of autotrophs. At great depths in oceans the amount of light reaching is very less, hence, making the survival of autotrophs difficult. Hence, Option C is the correct answer.
Deep sea has abundance of minerals and has a fertile sea floor and has a large number of animals adapted to that environment. Hence, options A, B and D are incorrect.
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