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Carotenoids, a family of natural pigments

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Carotenoids, a family of natural pigments  [#permalink]

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New post Updated on: 19 Jun 2017, 00:51
7
Question 1
00:00
A
B
C
D
E

based on 280 sessions

62% (02:43) correct 38% (02:35) wrong

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Question 2
00:00
A
B
C
D
E

based on 272 sessions

79% (00:44) correct 21% (01:16) wrong

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Question 3
00:00
A
B
C
D
E

based on 265 sessions

72% (01:10) correct 28% (01:08) wrong

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(Line)
    Carotenoids, a family of natural pigments,
    form an important art of the colorful signals
    used by many animals. Animals acquire
    carotenoids either directly (from the plants
(5)
    and algae that produce them) or indirectly (by
    eating insects) and store them in a variety of
    tissues. Studies of several animal species
    have shown that when choosing mates, females
    prefer males with brighter carotenoid-based
(10)
    coloration. Owens and Olson hypothesize that
    the presence of carotenoids, as signaled by
    coloration, would be meaningful in the context
    of mate selection if carotenoids were either
    rare or required for health. The conventional
(15)
    view is that carotenoids are meaningful
    because they are rare: healthier males can
    forage for more of the pigments than can their
    inferior counterparts. Although this may be
    true, there is growing evidence that carotenoids
(20)
    are meaningful also because they are required:
    they are used by the immune system and for
    detoxification processes that are important
    for maintaining health. It may be that males
    can use scarce carotenoids either for immune
(25)
    defense and detoxification or for attracting
    females. Males that are more susceptible to
    disease and parasites will have to use their
    carotenoids to boost their immune systems,
    whereas males that are genetically resistant
30)
    will use fewer carotenoids for fighting disease
    and will advertise this by using the pigments
    for flashy display instead.


Information in the passage suggests that which of the following is true of carotenoids that a male animal uses for detoxification processes?

A. They were not acquired directly from plants and algae.

B. They cannot be replenished through foraging.

C. They cannot be used simultaneously to brighten coloration.

D. They do not affect the animal’s susceptibility to parasites.

E. They increase the chances that the animal will be selected as a mate.




The passage suggests that relatively bright carotenoid-based coloration is a signal of which of the following characteristics in males of certain animal species?

A. Readiness for mating behavior

B. Ability to fight

C. Particular feeding preferences

D. Recovery from parasite infestation

E. Fitness as a mate




According to the “conventional view” referred to in lines 14-15 of the passage, brighter carotenoid-based coloration in certain species suggests that an individual

A. lives in a habitat rich in carotenoid-bearing plants and insects

B. has efficient detoxification processes

C. has a superior immune system

D. possesses superior foraging capacity

E. is currently capable of reproducing





An initiative to get official RCs in proper format.
Source: GMATPREP COMPREHENSIVE RC

Originally posted by JarvisR on 13 Jun 2015, 09:03.
Last edited by broall on 19 Jun 2017, 00:51, edited 1 time in total.
Reformatted question
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Re: Carotenoids, a family of natural pigments  [#permalink]

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New post 13 Jun 2015, 20:55
the first question is hard, I do not understand why c is correct?
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New post 13 Jun 2015, 20:56
the first question is hard, I do not understand why c is correct?

from 8am to 9 am, I feel nausy and can not read. from 9 am, I can read passages.
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Re: Carotenoids, a family of natural pigments  [#permalink]

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New post 14 Jun 2015, 07:22
1
Great passage.. If this is a Gmat Prep then it took me 8-9 mins. to get the correct answer for the entire thing. Read line 6 to 30 twice.to get clarity.

Explanations

Information in the passage suggests that which of the following is true of carotenoids that a male animal uses for detoxification processes?
A. They were not acquired directly from plants and algae.
B. They cannot be replenished through foraging.
C. They cannot be used simultaneously to brighten coloration.
D. They do not affect the animal’s susceptibility to parasites.
E. They increase the chances that the animal will be selected as a mate.

The question asks what about the carotenoids that are used for detox process- (Go to end of the passage)
It may be that males
can use scarce carotenoids either for immune defense and detoxification or for attracting females. Males that are more susceptible to disease and parasites will have to use their carotenoids to boost their immune systems, whereas males that are genetically resistant will use fewer carotenoids for fighting disease and will advertise this by using the pigments for flashy display instead.

"or"- used for detox then not used for brighten the color.- Therefore c. I checked the other options and eliminated them too

The passage suggests that relatively bright carotenoid-based coloration is a signal of
which of the following characteristics in males of certain animal species?
A. Readiness for mating behavior- color wrt mating is not said(Female choose bright but males have no say)
B. Ability to fight- No, Fight what(no mention
C. Particular feeding preferences- No feeding
D. Recovery from parasite infestation- No No
E. Fitness as a mate


Last line 5 line:Relatively bright:
The fit males signal this by being more bright - E

According to the “conventional view” referred to in lines 14-15 of the passage, brighter
carotenoid-based coloration in certain species suggests that an individual
A. lives in a habitat rich in carotenoid-bearing plants and insects
B. has efficient detoxification processes
C. has a superior immune system
D. possesses superior foraging capacity
E. is currently capable of reproducing
Line 16:
Healthier can forage for more pigment than inferior D

Thanks

All opinions are welcome.. I want to get thru the barrier and will want to know how you think :-D
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Re: Carotenoids, a family of natural pigments  [#permalink]

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New post 14 Jun 2015, 10:16
Can anyone explain the last answer?
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Re: Carotenoids, a family of natural pigments  [#permalink]

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New post 10 Aug 2016, 02:46
1
Took 6 mins , including 2 mins and 30 seconds to read
-The author talks about carotenoids and their effect on animal species
- The author then talks about two views held about carotenoids

1.
"It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females"
From the above, it is evident that they cannot be used simultaneously. Hence option (C ) is the right answer choice.

2.
"Males that are more susceptible to disease and parasites will have to use their carotenoids to boost their immune systems, whereas males that are genetically resistant will use fewer carotenoids for fighting disease and will advertise this by using the pigments for flashy display instead"

Option (E) is a clear word justification of the above excerpt. Hence correct.

3.
According to the "conventional view"…
"The conventional view is that carotenoids are meaningful because they are rare: healthier males can forage for more of the pigments than can their inferior counterparts."
Option (D) is a word justification of the above. Hence correct.
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Re: Carotenoids, a family of natural pigments  [#permalink]

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New post 21 Apr 2017, 07:44
Simple passage may be sub 600 lvl . took 6 minutes. to answer all.
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New post 18 Jun 2017, 04:57
Took me 5 mins 40 seconds for this passage.

All correct !
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Re: Carotenoids, a family of natural pigments  [#permalink]

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New post 04 Jul 2017, 23:03
1
-The author talks about carotenoids and their effect on animal species
- The author then talks about two views held about carotenoids
1.
"It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females"
From the above, it is evident that they cannot be used simultaneously. Hence option (C ) is the right answer choice.
Map- C –Signals , used by animals
F prefer M with Brighter C
O&O Theory – Against C theory
Conventinal Theory
States C required for detox process,health or attracting
M bad health can use C
M good health can use C for display.
A- No where mentioned in the passage
B – Again we cant comment
C – Hold on
D-It is reverse of what is written in passage.
E- Hold on.
Now E says Indeed they do increase the chance , but in question it says Male uses for detoxification purpose that is he is not a healthy male so Caretonids can be used for 1 purpose at a one time either to attract females or to Improve immune system.
So If male is using it for detox then he cant use it to brigthen coloration.
Hence OA is C
2.
"Studies of several animal species have shown that when choosing mates, females prefer males with brighter carotenoid-based coloration.
Owens and Olson hypothesize that the presence of carotenoids, as signaled by coloration, would be meaningful in the context of mate selection if
carotenoids were either rare or required for health."
Option (E) is a clear word justification of the above excerpt. Hence correct.
3.
According to the "conventional view"…
"The conventional view is that carotenoids are meaningful because they are rare: healthier males can forage for more of the pigments than can their inferior counterparts."
Option (D) is correct.
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Re: Carotenoids, a family of natural pigments   [#permalink] 04 Jul 2017, 23:03
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