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This topic has expert replies
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by sayanchakravarty » Tue May 31, 2011 7:30 pm

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by tabsang » Mon Jul 04, 2011 9:35 am
Yay!!!!
I got this one right. D it is.
Yay!!!!

Thanks Dana :)

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by shilpaseshadri » Tue Jul 19, 2011 8:07 am
Yup D is right.!

Dana, could you please share the other questions of the passage too.

Thanks.

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by olegpoi » Thu Aug 04, 2011 5:48 am
C

A - Feeding is not the only part of symbiosis as well as the latter is not about only feeding.
D - there are at least two roles described: Prey and Predator;
B - would be good title for the third paragraph
E - too general and broad

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by saketk » Sat Aug 20, 2011 10:28 am
A nice RC. Answer D.

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by sujamait » Mon Aug 29, 2011 2:31 am
D it seems,easy one!

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by Deependra1 » Mon Aug 29, 2011 6:06 am
ANSWER: D

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by prashant misra » Fri Sep 02, 2011 11:30 pm
the appropriate title for this passage seems to be the answer choice D as the paragraph discusses the role played by molluscs

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by JS_2 » Fri Sep 09, 2011 1:33 am
D
One useful tip I got from BTG for such questions is that "The main idea should be supported by every paragraph of the passage"

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by parul9 » Mon Sep 26, 2011 8:36 am
DanaJ wrote: So the answer is indeed D here.

A is incorrect because filterfeeding in bivalves is only discussed in the second (relatively short) paragraph, which makes this unsuited as a title of a huge, detailed passage like this one.

B is also incorrect because plankton is only mentioned once, in the very end of paragraph 1: ..and the floating larval stages form a very important part of the zooplankton that sustains life in the waters...

C is wrong because there's really not much talk about prey and predator or the tropical seas themselves. The molluscs don't really "prey" on anything, they sit in a place and filter water! Plus, "tropical seas" are only mentioned in the very end of the third paragraph.

D is correct because it encapsulates much of what's said in paragraph 1 (molluscs are both constructive and destructive forces in the reef), paragraph 2 (molluscs filter water and minute organisms) and 3 (molluscs farm certain small creatures).

E is wrong because there's no mentioning of Coelenterates. If you can believe it, I learned about Coelenterates in 6th grade - my biology teacher was kindda crazy and had us learn scientific terms for animals and plants! Euglena Viridis, Paramoecium Caudatum... Still remember these! :)
I got D. I took about 3 mins and 45 secs for this one, what would be the ideal time for solving this qsn?

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by immaculatesahai » Tue Nov 08, 2011 1:53 am
D is the pretty obvious answer i guess. The passage was so long and boring, but the answer was surprisingly easy to eliminate.

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by ReyWilli » Thu Dec 08, 2011 10:45 am
IMO (D) .
A) Too narrow. This only covered in paragraph 2.
B) don't recall any large focus on plankton. One word wrong = all wrong
C) Tropical seas wrong, plankton located in reefs.
D) Strong Answer: Molluscs introduced first, spoken more about in second, and third method of feeding.
E) couldnt find Coelenterates anywhere
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by ReyWilli » Thu Dec 08, 2011 10:49 am
Hi parul9, I hear we should shoot for 1 minute to 1:30 seconds for general questions.
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by him1985 » Thu Jan 26, 2012 4:04 am
I agree with D.
Title of the passage should be the one which is basic theme of whole passage. :)
Himanshu Chauhan

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by bostonblue » Tue Jan 31, 2012 1:10 pm
olegpoi wrote:C

A - Feeding is not the only part of symbiosis as well as the latter is not about only feeding.
D - there are at least two roles described: Prey and Predator;
B - would be good title for the third paragraph
E - too general and broad
Consider the opening and closing lines of the piece; they use the words "role," "linked," and "ecosystem." Not that the question ends right there, but it certainly points us towards D.