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Some flowering plant species, entirely dependent on bees for pollinati

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Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 22 Dec 2014, 14:07
3
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A
B
C
D
E

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46% (01:52) correct 54% (01:58) wrong based on 793 sessions

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Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.

The information above, if true, most strongly supports which one of the following?

(A) The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species.
(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.
(C) Some bees are able to gather pollen and nectar from any species of plant.
(D) The blossoms of most species of flowering plants attract some species of bees and do not attract others.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct.

Can someone help me to understand the reasoning behind this..
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 22 Dec 2014, 16:37
I got this wrong and picked B. Though I think E is also a good contender I don't know why it is more right. Can someone explain?
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 22 Dec 2014, 18:22
I picked D. I thought B was a decent choice too. But, I guess it's E because there is an emphasis in the beginning of the argument that bees depend on flower species for survival.
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 22 Dec 2014, 18:35
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Explanation as why B is not good

B says: If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.------>the word "unlikely" is a problem here !! . all we know from the argument is that "some plant" species is "dependent" on "some" pollinator. from this we cannot conclude B as . to say that the plant species is "unlikely" to become extinct is VERY EXTREME . who knows that this "plant species" might become extinct because of "pollution" or any other factor !!


reasoning as why E is best:

E says :The total destruction of the habitat of some plant species could cause some bee species to become extinct.----->look at the possibility of "could" that this option is talking about
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 22 Dec 2014, 18:44
dina98 wrote:
I picked D. I thought B was a decent choice too. But, I guess it's E because there is an emphasis in the beginning of the argument that bees depend on flower species for survival.



reasoning as why D is wrong

D says: The blossoms of most species of flowering plants attract some species of bees and do not attract others.----->all we know from the argument is that some plant species have evolved flowers that only a single species of bee can pollinate. from this we cannot conclude that The blossoms of most species of flowering plants attract some species of bees and do not attract others----->the word "MOST" is a problem here as we cannot be sure as what exactly is the behaviour of "MOST" species of flowering plant . who knows that MOST flowering plants are WIND POLLINATED !!
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 26 Dec 2014, 01:41
Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.

The information above, if true, most strongly supports which one of the following?

(A) The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species - This could also be the case Co-existence instead of having a Causal relation. Some Third factor might have been responsible for existence of both.
(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct - Can be said. Plat me extinct due to other reasons such as Land un-availability, Pollution, excessive plucking, Soil deterioration etc.
(C) Some bees are able to gather pollen and nectar from any species of plant - It might be true but not said above. Here we are concerned about only those Bees species who can feed only from single flower species.
(D) The blossoms of most species of flowering plants attract some species of bees and do not attract others - Most is 'extreme' here. How can we be so sure that Most (>50%) of the flowering plants attract only some (>0) bee species.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct - Correct. Can be inferred correctly. We can say there is a both side Cause and effect relationship in Some Flowering species and some bee species feeding on them. Anyone's extinction is dangerous for other.

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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 04 Jan 2015, 01:14
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Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees.
P1: Often the pollinating species can feed from—and thus pollinate—only a single species of plant.
P2: some plant species have evolved flowers that only a single species of bee can pollinate.

C: If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.


The information above, if true, most strongly supports which one of the following? [must be true: Something that can be proved from premise.]

(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.
>> What abt the other factors such as weather, flood etc. ? Certainly it's an important factor as per premise, but it doesn't guarantee that safety/survival of bees make the extinction of plants less likely.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct.
>> Look at P1. "species can feed from—and thus pollinate—only a single species of plant". These plants r only source source of food. So clearly winner.
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 18 Aug 2015, 11:04
[quote="ajaym28"]Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.
The information above, if true, most strongly supports which one of the following?
(A) The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species.
(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.
(C) Some bees are able to gather pollen and nectar from any species of plant.
(D) The blossoms of most species of flowering plants attract some species of bees and do not attract others.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct.

Please explain (especially e-GMAT representer) how "effect led to cause" is a probable answer...
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 18 Aug 2015, 13:47
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rohit8865 wrote:
ajaym28 wrote:
Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.
The information above, if true, most strongly supports which one of the following?
(A) The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species.
(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.
(C) Some bees are able to gather pollen and nectar from any species of plant.
(D) The blossoms of most species of flowering plants attract some species of bees and do not attract others.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct.

Please explain (especially e-GMAT representer) how "effect led to cause" is a probable answer...


E is the correct answer.

This is an inference type question.

Note the premise- Similarly, some plant species have evolved flowers that only a single species of bee can pollinate

The limitation on food supply of some of the bees makes them vulnerable to extinction if the plants they feed upon are destroyed.

Also note that option E only raises a possibility ( note the use of word could)

The total destruction of the habitat of some plant species could cause some bee species to become extinct.

If the plant habitat gets destroyed, it MAY lead to destruction of plants and so the Bees SOLELY DEPENDENT on these plants for their feed may face extinction.

Hope the above makes sense!1

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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 26 Aug 2015, 07:23
ajaym28 wrote:
Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.
The information above, if true, most strongly supports which one of the following?
(A) The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species.
(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.
(C) Some bees are able to gather pollen and nectar from any species of plant.
(D) The blossoms of most species of flowering plants attract some species of bees and do not attract others.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct.

Can someone help me to understand the reasoning behind this..



Bold expression states, have evolved flowers that only a single species of bee can pollinate.
Two questions, how important flower is for plant to survive. We do have plants without flowers, right ?
Now, can specific species of bee survive without those flowers ? So, here "specific species of bees" are dependent not the plant.


So, IMO it should be E.

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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 11 Oct 2016, 05:40
JarvisR wrote:
Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees.
P1: Often the pollinating species can feed from—and thus pollinate—only a single species of plant.
P2: some plant species have evolved flowers that only a single species of bee can pollinate.

C: If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.


The information above, if true, most strongly supports which one of the following? [must be true: Something that can be proved from premise.]

(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct.
>> What abt the other factors such as weather, flood etc. ? Certainly it's an important factor as per premise, but it doesn't guarantee that safety/survival of bees make the extinction of plants less likely.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct.
>> Look at P1. "species can feed from—and thus pollinate—only a single species of plant". These plants r only source source of food. So clearly winner.


Thanks for such a good explanation! :)
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 27 Aug 2017, 23:18
Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.

The information above, if true, most strongly supports which one of the following?

(A) The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species. May be or may not be true.
(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct. The argument mentioned the opposite. So, can not be true.
(C) Some bees are able to gather pollen and nectar from any species of plant. Any is an extreme word here.
(D) The blossoms of most species of flowering plants attract some species of bees and do not attract others. Most is an extreme word here.
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct. It is saying the possibility. So, it could be correct answer
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 30 Aug 2017, 09:53
Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees

So some particular bee type is dependent on this type as it is the only source of food for them . so if this flower plant species get extinct that bee species dependent on it will also get extinct . So the answer is E.

(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct. there might be some other reason why that plant species can get extinct such as some virus affecting whole species .
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 18 Jan 2018, 03:34
Answer (E)

B has mistaken negation error.

if A -> B
then if B -> need not be A
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Re: Some flowering plant species, entirely dependent on bees for pollinati  [#permalink]

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New post 28 Feb 2018, 11:14
Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.

The information above, if true, most strongly supports which one of the following?

(A) The earliest species of flowering plants appeared on Earth contemporaneously with the earliest bee species. -Passage is not about earliest species of plants.
(B) If the sole pollinator of a certain plant species is in no danger of extinction, the plant species it pollinates is also unlikely to become extinct. -If pollinator is not under danger of extinction then it doesn't mean the plant can't become extinct. This is NOT the only condition.
(C) Some bees are able to gather pollen and nectar from any species of plant. -"any" species of plant? Exaggerated choice.
(D) The blossoms of most species of flowering plants attract some species of bees and do not attract others. -"most"? Exaggerated
(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct. -Correct.
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