New York State Chemistry RegentsNew York State Earth Science Regents

 
Living Environment Regents Review Practice Ecology Question 2 PDF Print E-mail
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.

Last Updated on Sunday, 28 June 2009 07:24
 

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