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

 It is currently 15 Nov 2018, 05:18

Join Chat Room for Live Updates

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

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

Events & Promotions

Events & Promotions in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
• Free GMAT Strategy Webinar

November 17, 2018

November 17, 2018

07:00 AM PST

09:00 AM PST

Nov. 17, 7 AM PST. Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.
• GMATbuster's Weekly GMAT Quant Quiz # 9

November 17, 2018

November 17, 2018

09:00 AM PST

11:00 AM PST

Join the Quiz Saturday November 17th, 9 AM PST. The Quiz will last approximately 2 hours. Make sure you are on time or you will be at a disadvantage.

Caterpillars of all species produce an identical hormone

Author Message
TAGS:

Hide Tags

Manager
Joined: 13 Apr 2016
Posts: 60
Location: India
GMAT 1: 640 Q50 V27
GPA: 3
WE: Operations (Hospitality and Tourism)
Re: Caterpillars of all species produce an identical hormone  [#permalink]

Show Tags

08 May 2016, 05:56
Taku wrote:
Caterpillars of all species produce an identical hormone called "juvenile hormone" that maintains feeding behavior. Only when a caterpillar has grown to the right size for pupation to take place does a special enzyme halt the production of juvenile hormone. This enzyme can be synthesized and will, on being ingested by immature caterpillars, kill them by stopping them from feeding.

Which of the following, if true, most strongly supports the view that it would not be advisable to try to eradicate agricultural pests that go through a caterpillar stage by spraying croplands with the enzyme mentioned above?

A: Most species of caterpillar are subject to some natural predation.
B: Many agricultural pests do not go through a caterpillar stage.
C: Many agriculturally beneficial insects go through a caterpillar stage.
D: Since caterpillars of different species emerge at different times, several sprayings would be neccesary.
E: Although the enzyme has been synthsized in the laboratory, no large-scale production facilities exist as yet.

OA is C. can anyone please explain this
Intern
Joined: 11 Jan 2016
Posts: 2
Re: Caterpillars of all species produce an identical hormone  [#permalink]

Show Tags

20 Jul 2016, 11:30
(C)
The keyword here is 'agriculturally beneficial insects'. Since many agriculturally beneficial insects also go through caterpillar stage, spraying this enzyme on the crop might stop them from feeding and eventually kill them. But since they are actually beneficial to the crop, this is not desired or advised.
Retired Moderator
Joined: 14 Dec 2013
Posts: 2990
Location: Germany
Schools: HHL Leipzig
GMAT 1: 780 Q50 V47
WE: Corporate Finance (Pharmaceuticals and Biotech)
Re: Caterpillars of all species produce an identical hormone  [#permalink]

Show Tags

20 Jul 2016, 11:45
ritikasingh wrote:
(C)
The keyword here is 'agriculturally beneficial insects'. Since many agriculturally beneficial insects also go through caterpillar stage, spraying this enzyme on the crop might stop them from feeding and eventually kill them. But since they are actually beneficial to the crop, this is not desired or advised.

Correct explanation... added OA to the question.
Non-Human User
Joined: 01 Oct 2013
Posts: 3377
Re: Caterpillars of all species produce an identical hormone  [#permalink]

Show Tags

19 Oct 2018, 06:53
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Caterpillars of all species produce an identical hormone &nbs [#permalink] 19 Oct 2018, 06:53

Go to page   Previous    1   2   3   [ 44 posts ]

Display posts from previous: Sort by