It is currently 19 Apr 2018, 18:15

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

Events & Promotions in June
Open Detailed Calendar

The variety of fish reproduction techniques provides an example of the

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

Hide Tags

1 KUDOS received
Manager
Manager
avatar
G
Joined: 30 Dec 2016
Posts: 159
Reviews Badge
The variety of fish reproduction techniques provides an example of the [#permalink]

Show Tags

New post 22 Feb 2018, 04:59
1
This post received
KUDOS
2
This post was
BOOKMARKED
Question 1
00:00
A
B
C
D
E

Question Stats:

85% (02:22) correct 15% (03:37) wrong based on 60

HideShow timer Statistics

Question 2
00:00
A
B
C
D
E

Question Stats:

76% (00:29) correct 24% (00:24) wrong based on 62

HideShow timer Statistics

Question 3
00:00
A
B
C
D
E

Question Stats:

65% (01:04) correct 35% (01:25) wrong based on 62

HideShow timer Statistics

The variety of fish reproduction techniques provides an example of the adaptive complexity that ecologists have found. Most spawning is synchronized with phases of the moon, and eggs are fertilized in the water column. However, some species lay eggs on the sea bottom or in a protected area. Damselfishes will guard their nests quite aggressively, while jawfish and cardinalfish incubate eggs in the mouth. Seahorse and pipefish carry their eggs in a pouch.

Most hermaphroditic species follow the protogynous pattern of the fairy basselet. If the male disappears, the dominant female in his harem will change sex within days and take over his role within hours. However, a few species are protandrous, where the fish are male first and then become female. Much remains to be learned about fish reproduction, and evolutionary biologists find that the coral environment provides them with many opportunities to observe a variety of species and specialized behaviours.

The reef itself is alive with many billions of coral colonies plus other limestone-depositing organisms, growing among the skeletons of their predecessors. Reefs grow on the continental shelf edge, on the shelf itself, along islands and atolls, and from the continental mainland. While strict requirements concerning the amount of available light, and the ocean‘s clarity, temperature, and movement have restricted the geographic locations of the Earth‘s reefs, these requirements have not limited the ecological complexity of reef communities.

Species representing more phyla than those found in a tropical rainforest live on coral reefs. Scientists counted 1,441 worms on one coral head alone, and these worms belonged to over a hundred different families. Six of the Earth‘s seven species of marine turtles inhabit the Great Barrier Reef. Four thousand species of fishes, more than a third of all marine fish species, make coral ecosystems their home. Perhaps more notably, representatives from all fish families and most genera are reef inhabitants.

Scientists study reef fishes not only because of the diverse sampling of species but also because of the range of behaviours and relationships between species and other animals that is available for analysis. Intense competition and predation have caused fishes to carve out special niches. Mimicry and camouflage offer just two ways for species to blend in with their surroundings. Symbiotic relationships between fish and other organisms also occur with frequency on coral reefs. The anemonefish share their habitat with sea anemones in a symbiotic relationship that scientists have yet to unravel completely. The defensive nematocysts of the anemone are used to stun prey, but the anemonefish are resistant to these stinging cells. Researchers believe that the fish secrets a mucous coating that mimics that of the anemone allowing for chemical signals to prohibit the firing of the cells. One theory holds that the fish obtain these chemicals by rubbing against the sea anemone‘s tentacles. The benefits, if any, to the anemone for having these fish live with them is not clear.

1. Based on the information set down in the passage by the author, with which of the following statements would the author most likely agree?

A. More effort should be made to protect Australia‘s Great Barrier Reef.
B. The absence of diverse phyla in terrestrial ecosystems makes them irrelevant for Earth‘s biodiversity.
C. The richness of coral reef diversity should be recognized and studied.
D. Ecologists should focus research efforts on environments other than coral reefs
E. Coral reefs are not as important as they are made out to be


2. The author discusses the number of species found on a coral head in the fourth paragraph in order to:

A. provide an example of an abnormal phenomenon.
B. emphasize how much greater the diversity of worms on a reef than fish.
C. highlight the importance of coral reef preservation.
D. illustrate the diversity found in coral reefs.
E. contradict a widely accepted theory


3. It can be inferred from the passage that changes in an ocean‘s water clarity and temperature would concern researchers studying coral reefs because:

A. water clarity and temperature directly limit ecological biodiversity.
B. symbiotic relationships between organisms are complex and interesting.
C. water clarity and temperature affect the growth of coral communities.
D. scientists studying reefs also study climate change.
E. fishes cannot survive in very cold temperature

[Reveal] Spoiler: Question #1 OA
[Reveal] Spoiler: Question #2 OA
[Reveal] Spoiler: Question #3 OA

_________________

Regards
SandySilva


____________
Hit kudos if my post helped (:

SVP
SVP
avatar
P
Joined: 12 Dec 2016
Posts: 1924
Location: United States
GMAT 1: 700 Q49 V33
GPA: 3.64
GMAT ToolKit User Premium Member
Re: The variety of fish reproduction techniques provides an example of the [#permalink]

Show Tags

New post 23 Feb 2018, 19:57
C
D
B
I got 1 wrong and it takes me 8 min to finish all 3 questions.
The passage is quite long, and it has 6 paragraphs, and it also contains too many details
Manager
Manager
avatar
B
Joined: 12 Mar 2017
Posts: 61
GMAT 1: 630 Q49 V27
Re: The variety of fish reproduction techniques provides an example of the [#permalink]

Show Tags

New post 24 Feb 2018, 11:52
chesstitans wrote:
C
D
B
I got 1 wrong and it takes me 8 min to finish all 3 questions.
The passage is quite long, and it has 6 paragraphs, and it also contains too many details


chesstitans. could you please explain why the answer to Q 1 is C?
Intern
Intern
avatar
B
Joined: 04 Feb 2016
Posts: 26
Location: India
Concentration: Technology, Marketing
GPA: 3.7
WE: Sales (Computer Software)
CAT Tests
The variety of fish reproduction techniques provides an example of the [#permalink]

Show Tags

New post 11 Mar 2018, 13:01
prateek176 wrote:
chesstitans wrote:
C
D
B
I got 1 wrong and it takes me 8 min to finish all 3 questions.
The passage is quite long, and it has 6 paragraphs, and it also contains too many details


chesstitans. could you please explain why the answer to Q 1 is C?


Unreally long passage.

All correct in 8:20.

Explanation for 1.

A --> Out of Scope.

B--> Extreme. All you know is "Species representing more phyla than those found in a tropical rainforest live on coral reefs".

D --> Incorrect. Check the entire 4th paragraph. Coral reef is heaven for someone interested in Bio diversity.

E. --> "Scientists study reef fishes not only because of the diverse sampling of species but also because of the range of behaviours and relationships between species and other animals that is available for analysis." --> means reefs are important.

Hence option C.
The variety of fish reproduction techniques provides an example of the   [#permalink] 11 Mar 2018, 13:01
Display posts from previous: Sort by

The variety of fish reproduction techniques provides an example of the

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


GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.