Carotenoids (类葫萝卜素) , a family of natural pigments,
form an important art of the colorful signals
used by many animals. Animals acquire
Line 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.
Q13:
Information in the passage suggests that which of the following is true of carotenoids that a male animal uses for detoxification processes?
Answer:
这道题有争议，C & E, 开始我选择E, 但现在又感觉选择C，
因为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.
说males that are genetically resistant
will use fewer carotenoids for fighting disease，而是using the pigments
for flashy display instead，也就说
用来
fighting disease的carotenoids和用来brighten coloration
不是兼容的，不知道我的分析对不对，请高人指教。
我认为选C, E的表述中缺陷是 用于解毒的色素增加了被择偶的几率, 但是没说色素是否足量用来保持健康
Csimultaneously 逻辑严密
请牛牛来帮忙看下13. GWD28-Q13:
Information in the passage suggests that which of the following is true of carotenoids that a male animal uses for detoxification processes?
Answer:
--------------------------------------------------------------------------------
14. GWD28-Q14:
The passage suggests that relatively bright carotenoid-based coloration is a signal of which of the following characteristics in males of certain animal species?
Answer:
--------------------------------------------------------------------------------
15. GWD28-Q15:
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
请大N解答这篇的三个问题，以前没有讨论过，谢谢
Carotenoids (类葫萝卜素) , a family of natural pigments,
form an important art of the colorful signals
used by many animals. Animals acquire
Line 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.
Q13:
Information in the passage suggests that which of the following is true of carotenoids that a male animal uses for detoxification processes?
Answer:
这道题有争议，C & E, 开始我选择E, 但现在又感觉选择C，
因为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.
说males that are genetically resistant
will use fewer carotenoids for fighting disease，而是using the pigments
for flashy display instead，也就说
用来
fighting disease的carotenoids和用来brighten coloration
不是兼容的，不知道我的分析对不对，请高人指教。
"...will use fewer carotenoids for fighting disease and will advertise", fewer indicates that once being used to fight disease, carotenoids can't be used as coloration any more.
感谢，明白了。选项C正确。
把Carotenoid用来解毒的（不健康的males），就不能把Carotenoid拿去炫耀color
E选项说反了，应该会减少吸引伴侣的机会（因为不能把Carotenoid拿去炫耀color）
carotenoids that a male animal uses for detoxification processes?不是for immune defense啊？
不是单纯只问carotenoids啊？？？
既然已经限定了for detoxification processes为什么不是E呢？
请大牛解答啊！！！！！！！！！！！！！！！！！！！！！！！
DeliciaAn 发表于 2015-6-30 22:35
顶一下amumu。解释得太好啦！
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