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Zooplankton, tiny animals adapted to an existence in the oce
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Updated on: 31 Aug 2022, 06:43
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Zooplankton, tiny animals adapted to an existence in the ocean, have evolved clever mechanisms for obtaining their food, miniscule phytoplankton (plant plankton). A very specialized feeding adaptation in zooplankton is that of the tadpolelike appendicularian who lives in a walnut-sized (or smaller) balloon of mucus equipped with filters that capture and concentrate phytoplankton. The balloon, a transparent structure that varies in design according to the type of appendicularian inhabiting it, also protects the animal and helps to keep it afloat. Water containing phytoplankton is pumped by the appendicularian's muscular tail into the balloon's incurrent filters. passes through the feeding filter where the appendicularian sucks the food into its mouth. and then goes through an exit passage. Found in all the oceans of the world, including the Arctic Ocean, appendicularians tend to remain near the water's surface where the density of phytoplankton is greatest.
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Question Stats:
48% (02:37) correct
52% (02:31) wrong based on 63 sessions
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17. It can be inferred from the passage that which of the following is true of appendicularians?
(A) They are exclusively carnivorous. (B) They have more than one method of obtaining food. (C) They can tolerate frigid water. (D) They can disguise themselves by secreting mucus. (E) They are more sensitive to light than are other zooplankton.
90% (00:32) correct
10% (01:15) wrong based on 61 sessions
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18. The author is primarily concerned with
(A) explaining how appendicularians obtain food (B) examining the flotation methods of' appendicularians (C) mapping the distribution of appendicularians around the world (D) describing how appendicularians differ from other zooplankton (E) comparing the various types of balloons formed by appendicularians
91% (00:39) correct
9% (00:43) wrong based on 55 sessions
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20. The passage suggests that appendicularians tend to remain in surface waters because they
(A) prefer the warmer water near the surface (B) are unable to secrete mucus at the lower levels of the ocean (C) use the contrast of light and shadow at the surface to hide from predators (D) live in balloons that cannot withstand the water pressure deeper in the ocean (E) eat food that grows more profusely near the surface
Re: Zooplankton, tiny animals adapted to an existence in the oce
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03 Apr 2019, 08:32
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17. It can be inferred from the passage that which of the following is true of appendicularians?
(A) They are exclusively carnivorous. " not supported by the passage" (B) They have more than one method of obtaining food. "not stated" (C) They can tolerate frigid water. "correct because of the line:Found in all the oceans of the world, including the Arctic Ocean"" (D) They can disguise themselves by secreting mucus. "not supported by the passage" (E) They are more sensitive to light than are other zooplankton." no information"
Re: Zooplankton, tiny animals adapted to an existence in the oce
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12 May 2020, 10:12
Expert Reply
Found in all the oceans of the world, including the Arctic Ocean, appendicularians tend to remain near the water's surface where the density of phytoplankton is greatest.
Re: Zooplankton, tiny animals adapted to an existence in the oce
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24 May 2023, 15:43
POLASH106 wrote:
17. It can be inferred from the passage that which of the following is true of appendicularians?
(A) They are exclusively carnivorous. " not supported by the passage" (B) They have more than one method of obtaining food. "not stated" (C) They can tolerate frigid water. "correct because of the line:Found in all the oceans of the world, including the Arctic Ocean"" (D) They can disguise themselves by secreting mucus. "not supported by the passage" (E) They are more sensitive to light than are other zooplankton." no information"
No where in the passage it was mentioned that Arctic waters are frigid. Can we assume about this kind of outside information
Re: Zooplankton, tiny animals adapted to an existence in the oce
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24 May 2023, 16:02
Expert Reply
Good question.
We can reach C as a correct answer even by POE. The other options are wrong or not mentioned in the passage at all.
However, in this case, I believe the fact that the Arctic ocean is frigid in not an assumption we make or information from the outside we bring into the passage but is a fact that is universally recognized.
Re: Zooplankton, tiny animals adapted to an existence in the oce
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24 May 2023, 16:13
Carcass wrote:
Good question.
We can reach C as a correct answer even by POE. The other options are wrong or not mentioned in the passage at all.
However, in this case, I believe the fact that the Arctic ocean is frigid in not an assumption we make or information from the outside we bring into the passage but is a fact that is universally recognized.
I hope this helps
Yeah I checked other options as well which are nowhere and marked C, but got a doubt about this kind of questions to assume or not
gmatclubot
Re: Zooplankton, tiny animals adapted to an existence in the oce [#permalink]