GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 21 Nov 2018, 00:34

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • All GMAT Club Tests are Free and open on November 22nd in celebration of Thanksgiving Day!

     November 22, 2018

     November 22, 2018

     10:00 PM PST

     11:00 PM PST

    Mark your calendars - All GMAT Club Tests are free and open November 22nd to celebrate Thanksgiving Day! Access will be available from 0:01 AM to 11:59 PM, Pacific Time (USA)
  • Free lesson on number properties

     November 23, 2018

     November 23, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.

Biological functions of many plants and animals vary in cycles that

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Retired Moderator
User avatar
P
Joined: 19 Mar 2014
Posts: 944
Location: India
Concentration: Finance, Entrepreneurship
GPA: 3.5
GMAT ToolKit User Premium Member
Re: Biological functions of many plants and animals vary in cycles that  [#permalink]

Show Tags

New post 20 Apr 2017, 12:07
Biological functions of many plants and animals
vary in cycles that are repeated every 24 hours. It is
tempting to suppose that alteration in the intensity
of incident light is the stimulus that controls
these daily biological rhythms. But there is much
evidence to contradict this hypothesis.

Which of the following, if known, is evidence that contradicts the hypothesis stated in lines 2-5 above?

(A) Human body temperature varies throughout the day, with the maximum occurring in the late afternoon and the minimum in the morning.

- This option talks about the temperature impact on human body and nowhere mentions the impact of the light, hence this option is irrelevant.

(B) While some animals, such as the robin, are more active during the day, others, such as mice, show greater activity at night

- Once again, this option talk about day and night but we cannot conclude that light is playing a role in this behaviour. Hence, B is irrelevant too.


(C) When people move from one time zone to another, their biological rhythms adjust in a matter of days to the periods of sunlight and darkness in the new zone.
- Time zones is completely out of Scope.


(D) Certain single-cell plants display daily biological rhythms even when the part of the cell containing the nucleus is removed.
- Talks about biological rhythms but does not mention anything about light, once again out.


(E) Even when exposed to constant light intensity around the clock, some algae display rates of photosynthesis that are much greater during daylight hours than at night.

- This option is clearly taking into consideration the impact of light. It definitely weakens the argument.

_________________

"Nothing in this world can take the place of persistence. Talent will not: nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not: the world is full of educated derelicts. Persistence and determination alone are omnipotent."

Best AWA Template: https://gmatclub.com/forum/how-to-get-6-0-awa-my-guide-64327.html#p470475

Intern
Intern
avatar
B
Joined: 28 Jun 2016
Posts: 1
Location: India
GMAT 1: 600 Q47 V20
GPA: 3.5
Re: Biological functions of many plants and animals vary in cycles that  [#permalink]

Show Tags

New post 12 Nov 2017, 06:30
1
Read the second part of the question carefully, "alteration" in the intensity...reason for the change in biological rhythms.
so we are concerned with the change in light intensity, be it any light.

option E clearly states that, even after providing "constant light intensity" exposure to algae, rates of photosynthesis (biological rhythms)...greater during daylight hours( we are speaking only of hours, the light intensity is still constant) than at NIGHT( whoa!! there is a variation in biological rhythms!!...who the hell did it, definitely not light intensity coz that was kept constant throughout!)
whoa!! again hypothesis overruled

hope you understood it.

please give a kudos if you understood!!:)
Intern
Intern
avatar
B
Joined: 09 Jan 2018
Posts: 16
Re: Biological functions of many plants and animals vary in cycles that  [#permalink]

Show Tags

New post 03 Sep 2018, 07:43
1
plumber250 wrote:
Hi - I agree.

E is not the correct answer. It supports the conclusion that light is not the key thing that causes creatures to distinguish between day and night...

James

Thanks.
GMAT Club Bot
Re: Biological functions of many plants and animals vary in cycles that &nbs [#permalink] 03 Sep 2018, 07:43

Go to page   Previous    1   2   [ 23 posts ] 

Display posts from previous: Sort by

Biological functions of many plants and animals vary in cycles that

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.