Characterized as half zebra and half horse, the quagga sounds like a m

Question

Characterized as half zebra and half horse, the quagga sounds like a mythical creature, but at one time, it was a very real animal. Only 150 years ago, a great number of quaggas were found in South Africa. Unlike the common zebra, which has black and white stripes that cover its entire body, the quagga has yellow-brown stripes only on its head, neck, and forebody, which gave it its half-horse facade. Its unique appearance caused early explorers to think the quagga was a separate species from the common zebra when it was discovered around 1760, but DNA analysis later revealed that the animal is a subspecies of the zebra. In the 100 years following its discovery, the quagga population diminished. It was frequently hunted for its meat and hide, and settlers who considered the animal a competitor for the grazing of their livestock also callously killed the quagga in great numbers. By 1870, the quagga was no longer found in the wild. The last captive quagga died in 1880 in an Amsterdam zoo. Today, the quagga is categorized as an extinct animal, but researchers in Africa hope to resurrect the native subspecies through genetic modification and selective breeding.    1 
 1. What does the author designate as the primary reason for the quagga going extinct?

A. DNA analysis revealed that the quagga was susceptible to diseases brought by domesticated animals.
B. The quagga did not have enough grazing land.
C. The quagga was unable to survive in captivity.
D. Settlers eliminated the species through hunting and extermination.
E. The quagga did not breed as successfully as the common zebra.

2 
 2. With which of the following statements would the author of the passage most likely agree?

A. The zebra is a type of quagga.
B. Researchers hope to restore the quagga using scientific technology.
C. Settlers humanely killed quaggas in an effort to protect their livestock.
D. Shortly after the quagga was discovered, its population grew.
E. Settlers saw the quagga as a competitor for the prey of their livestock.

3 
 3. Based on the information in the passage, which conclusion can be drawn?

I. If it were not for the human influence, the quagga would be a surviving species.
II. DNA analysis can help humans better understand the origins of certain species.
III. The extinction of species should not be a concern as scientists are able to bring back extinct species through genetic modification.

A. I Only
B. II Only
C. III Only
D. I and II Only
E. II and III Only

Kaplan GRE Verbal Workbook 2018

Ruchi007 · Answer

sajjad  Please provide the explanation to #3.

Sajjad1994 · Answer

Official Explanation

3. Based on the information in the passage, which conclusion can be drawn?

Explanation

This question asks you to evaluate the statement and identify what conclusions you can draw using the information from the passage.

Choice (I)  overstates the passage. Humans were historically responsible for the quagga’s extinction. There’s no way to deduce what would have happened absent human contact.

Choice (II)  follows from the portion of the passage in which you learn that DNA analysis helped determine that the quagga is a subspecies of the zebra and not a unique species. That’s enough to make the broadly worded  choice (II)  a viable conclusion.

Choice (III)  does not provide a viable answer; it assumes too much information. The passage states that researchers are trying to bring back the extinct quagga, but it doesn’t say how likely these efforts are to be successful, nor does it opine on how much concern extinctions should provoke.

Answer: B

Thaania · Answer

Had humans not hunt down quaggas by considering it a threat to livestock and for meat and hide, the population would not have come down so quickly, The passage here does not mention any other possible threat to quagga population as well. So according to the passage, isn't option D the correct answer for Q.3?

smithsa · Answer

What are the potential ecological and scientific benefits of quagga restoration despite the challenges involved in bringing this extinct species back?

smithsa · Answer

What factors contributed to the extinction of the quagga, and what efforts are being made to resurrect this unique subspecies potentially?

Carcass · Answer

OFFICIAL EXPLANATION QUESTION 1

D

This question asks you to identify a major point in the passage, the "primary reason" for the quagga's extinction. Research leads you to the sentence between those asserting the quagga's decline and its extinction. The quagga was hunted and "callously" exterminated by ranchers who considered it a competitor for their livestock. Choice (A) distorts the passage. Settlers considered the quagga a competitor with their herds, but there's nothing to suggest that the domestic species infected the wild animals. Choice (C) distorts the passage, which states that the last quagga died in captivity but not that the species' extinction was a result of captivity. Similarly, choice (E) distorts that portion of the passage stating that researchers want to revive the quagga using selective breeding of existing, related species. It does not link the quagga's extinction to its breeding habits. Choices (B) and (D) are both, in a way, related to grazing. Choice (B) is incorrect because it ascribes the problem to the quagga's loss of grazing habitat. You never learn that the quagga was left with an insufficient range. The quagga competed with livestock for grazing, which caused settlers to hunt the species to extinction. Choice (D) best reflects what the passage states as the primary reason for the quagga's extinction.

Carcass · Answer

OFFICIAL EXPLANATION QUESTION 2

B

The correct answer may not be stated explicitly in the passage, but it must follow directly from something that is stated there. The passage states that the quagga is a subspecies of the zebra, not the other way around. That makes choice (A) incorrect. The passage also contradicts choice (D); its population "diminished" after discovery. Choice (C), which states that settlers "humanely" killed quaggas, contradicts the passage more subtly but just as fatally. In fact, according to the passage, settlers "callously" killed quaggas. Choice (E) distorts the passage. The quagga was a competitor for the pasture of settlers' livestock, not their prey. Indeed, grazing animals have no prey. Choice (B) is the correct answer, as the last sentence of the passage states that scientists are hoping to spark the species' return.

Characterized as half zebra and half horse, the quagga sounds like a m

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

GMAT Reading Comprehension (RC) Questions

Characterized as half zebra and half horse, the quagga sounds like a m

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards