GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

It is currently 22 Jan 2020, 01:34

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

Scientists studying the physiology of dinosaurs have long debated whet

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

Hide Tags

Find Similar Topics 
Manager
Manager
avatar
Joined: 21 Aug 2012
Posts: 80
Concentration: General Management, Operations
Schools: HBS '19 (S)
GMAT 1: 740 Q49 V42
Scientists studying the physiology of dinosaurs have long debated whet  [#permalink]

Show Tags

New post Updated on: 28 Aug 2019, 05:15
7
20
Question 1
00:00
A
B
C
D
E

based on 524 sessions

61% (03:09) correct 39% (03:30) wrong

HideShow timer Statistics

Question 2
00:00
A
B
C
D
E

based on 517 sessions

82% (00:49) correct 18% (01:33) wrong

HideShow timer Statistics

Question 3
00:00
A
B
C
D
E

based on 525 sessions

79% (00:55) correct 21% (01:30) wrong

HideShow timer Statistics

Question 4
00:00
A
B
C
D
E

based on 508 sessions

77% (01:14) correct 23% (01:19) wrong

HideShow timer Statistics

Question 5
00:00
A
B
C
D
E

based on 83 sessions

83% (01:18) correct 17% (01:44) wrong

HideShow timer Statistics

Scientists studying the physiology of dinosaurs have long debated whether dinosaurs were warm- or cold-blooded. Those who suspect they were warm-blooded point out that dinosaur bone is generally fibro-lamellar in nature; because fibro-lamellar bone is formed quickly, the bone fibrils, or filaments, are laid down haphazardly. Consistent with their rapid growth rate, warm-blooded animals, such as birds and mammals, tend to produce fibro-lamellar bone, whereas reptiles, which are slow-growing and cold-blooded, generally produce bone in which fibrils are laid down parallel to each other. Moreover, like the bone of birds and mammals, dinosaur bone tends to be highly vascularized, or filled with blood vessels. These characteristics, first recognized in the 1930’s, were documented in the 1960’s by de Ricqlès, who found highly vascularized, fibro-lamellar bone in several groups of dinosaurs. In the 1970’s, Bakker cited these characteristics as evidence for the warm-bloodedness of dinosaurs. Although de Ricqlès urged caution, arguing for an intermediate type of dinosaur physiology, a generation of paleontologists has come to believe that dinosaur bone is mammalianlike.

In the 1980’s, however, Bakker’s contention began to be questioned, as a number of scientists found growth rings in the bones of various dinosaurs that are much like those in modern reptiles. Bone growth in reptiles is periodic in nature, producing a series of concentric rings in the bone, not unlike the growth rings of a tree. Recently, Chinsamy investigated the bones of two dinosaurs from the early Jurassic period (208-187 million years ago), and found that these bones also had growth rings; however, they were also partially fibro-lamellar in nature. Chinsamy’s work raises a question central to the debate over dinosaur physiology: did dinosaurs form fibro-lamellar bone because of an innately high metabolic rate associated with warm-bloodedness or because of periods of unusually fast growth that occurred under favorable environmental conditions? (Although modern reptiles generally do not form fibro-lamellar bone, juvenile crocodiles raised under optimal environmental conditions do.) This question remains unanswered; indeed, taking all the evidence into account, one cannot make a definitive statement about dinosaur physiology on the basis of dinosaur bone. It may be that dinosaurs had an intermediate pattern of bone structure because their physiology was neither typically reptilian, mammalian, nor avian.
1. The author of the passage would be most likely to agree that the "caution" (line 29) urged by de Ricqlès regarding claims about dinosaur physiology was

(A) unjustified by the evidence available to de Ricqlès
(B) unnecessary, given the work done by Bakker and his followers
(C) indicative of the prevailing scientific opinion at the time
(D) warranted, given certain subsequent findings of other scientists
(E) influential in the recent work of Chinsamy



2. The primary purpose of the passage is to

(A) discuss the influence on other scientists of Bakker's argument concerning the warm-bloodedness of dinosaurs
(B) provide evidence that supports the claim that dinosaurs were cold-blooded
(C) challenge the contention that dinosaur bone tissue is innately fibro-lamellar
(D) evaluate the claim that dinosaur bone tissue provides evidence for the warmbloodedness of dinosaurs
(E) resolve the disagreement between de Ricqlès and Bakker over the nature of dinosaur physiology



3. According to the passage, the discovery of growth rings in the bones of certain dinosaurs served to undermine which of the following claims?

(A) That modern reptiles are related to dinosaurs
(B) That bone growth in dinosaurs was periodic in nature
(C) That dinosaurs were warm-blooded
(D) That dinosaurs had an intermediate type of physiology
(E) That fibro-lamellar bone is the product of a rapid growth rate



4. The author of the passage mentions bone growth patterns in juvenile crocodiles most likely in order to

(A) provide support for the argument that reptiles are not related to dinosaurs
(B) undermine the claim that most reptiles are slow-growing
(C) offer an explanation as to why juvenile crocodiles differ from most modern reptiles
(D) suggest the juvenile crocodiles have a type of physiology intermediate between-f mammals and that of reptiles
(E) suggest that the presence of fibro-lamellar bone does not resolve the debate over dinosaur physiology



5. The passage suggests that, unlike Bakker, de Ricqlès believed which of the following about the highly vascularized, fibro-lamellar bone mentioned in the highlighted text?

1)It was a type of bone found only in a small group of dinosaurs.
2)It had characteristics that were inconsistent with a growth rate as rapid as that of mammals.
3)It did not provide sufficiently compelling evidence for warm-bloodedness in dinosaurs.
4)It was highly vascularized but not truly fibro-lamellar in nature.
5)It supported the claim that bone growth in dinosaurs was periodic in nature.



Originally posted by roopika2990 on 30 Jan 2013, 23:38.
Last edited by SajjadAhmad on 28 Aug 2019, 05:15, edited 8 times in total.
Updated - Complete topic (314).
SVP
SVP
User avatar
P
Status: Top MBA Admissions Consultant
Joined: 24 Jul 2011
Posts: 1919
GMAT 1: 780 Q51 V48
GRE 1: Q800 V740
Re: Scientists studying the physiology of dinosaurs have long debated whet  [#permalink]

Show Tags

New post 02 Feb 2013, 02:12
Q1. (D) is correct. The caution was warranted, given the contradictory findings of other scientists later

Q2. This is a tough one. (A) is out, because evaluating Bakker's argument is not the main purpose. (B) is not supported so that is out too. (C) is incorrect, because the structure of the tissue came about to support the main argument. It was not the main argument itself. (D) encapsulates the overall passage well and is correct. (E) The disagreement between them came about later. It does not encapsulate the paragraph.

Q3. (C) it is. The fact that these rings are found in reptile bones contradicts and undermines the finding that dinosaurs were warm blooded.

Q4. This is a relatively easy one - straight from the passage. (E) it is.
_________________
GyanOne [www.gyanone.com]| Premium MBA and MiM Admissions Consulting

Awesome Work | Honest Advise | Outstanding Results

Reach Out, Lets chat!
Email: info at gyanone dot com | +91 98998 31738 | Skype: gyanone.services
Intern
Intern
avatar
Joined: 19 Feb 2017
Posts: 1
Re: Scientists studying the physiology of dinosaurs have long debated whet  [#permalink]

Show Tags

New post 12 Mar 2017, 10:47
Ergenekon wrote:
Got all right. Took 6 minutes.


got all right but I took 12 minutes...

What is the technique? just fast reading?

I use to read all the passage and then answer the questions... where am I wrong?
Board of Directors
User avatar
D
Joined: 01 Sep 2010
Posts: 3405
Re: Scientists studying the physiology of dinosaurs have long debated whet  [#permalink]

Show Tags

New post 13 Mar 2017, 02:43
1
Top Contributor
In my opinion the best strategy is to read the passage very carefully but at a constant pace. Trying to get the overall meaning for general questions. Fo rinferecnce or detailed question you can always look at specific portion of the passage.

Regards
_________________
Verbal Forum Moderator
User avatar
V
Status: Greatness begins beyond your comfort zone
Joined: 08 Dec 2013
Posts: 2446
Location: India
Concentration: General Management, Strategy
Schools: Kelley '20, ISB '19
GPA: 3.2
WE: Information Technology (Consulting)
GMAT ToolKit User Reviews Badge CAT Tests
Re: Scientists studying the physiology of dinosaurs have long debated whet  [#permalink]

Show Tags

New post 06 Aug 2017, 04:58
1
Total time 7 mins 40 seconds, including 3 mins to read the passage

1. The author of the passage would be most likely to agree that the "caution" (line 29) urged by de Ricqlès regarding claims about dinosaur physiology was
(D) warranted, given certain subsequent findings of other scientists - Although de Ricqlès urged caution, arguing for an intermediate type of dinosaur physiology, a generation of paleontologists has come to believe that dinosaur bone is mammalianlike. In the 1980’s, however, Bakker’s contention began to be questioned, as a number of scientists found growth rings in the bones of various dinosaurs that are much like those in modern reptiles.

2. The primary purpose of the passage is to
(D) evaluate the claim that dinosaur bone tissue provides evidence for the warm-bloodedness of dinosaurs - This question remains unanswered; indeed, taking all the evidence into account, one cannot make a definitive statement about dinosaur physiology on the basis of dinosaur bone. It may be that dinosaurs had an intermediate pattern of bone structure because their physiology was neither typically reptilian, mammalian, nor avian.

3. According to the passage, the discovery of growth rings in the bones of certain dinosaurs served to undermine which of the following claims?
(C) That dinosaurs were warm-blooded - Bone growth in reptiles is periodic in nature, producing a series of concentric rings in the bone, not unlike the growth rings of a tree.

4. The author of the passage mentions bone growth patterns in juvenile crocodiles most likely in order to
(E) suggest that the presence of fibro-lamellar bone does not resolve the debate over dinosaur physiology - (Although modern reptiles generally do not form fibro-lamellar bone, juvenile crocodiles raised under optimal environmental conditions do.) This question remains unanswered; indeed, taking all the evidence into account, one cannot make a definitive statement about dinosaur physiology on the basis of dinosaur bone.
_________________
When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long
Manager
Manager
User avatar
G
Joined: 21 Jul 2017
Posts: 183
Location: India
Concentration: Social Entrepreneurship, Leadership
GMAT 1: 660 Q47 V34
GPA: 4
WE: Project Management (Education)
Reviews Badge
Re: Scientists studying the physiology of dinosaurs have long debated whet  [#permalink]

Show Tags

New post 29 Oct 2018, 06:45
Moderators, please add the following question to the passage

The passage suggests that, unlike Bakker, de Ricqlès believed which of the following about the highly vascularized, fibro-lamellar bone mentioned in the highlighted text?

It was a type of bone found only in a small group of dinosaurs.

It had characteristics that were inconsistent with a growth rate as rapid as that of mammals.

It did not provide sufficiently compelling evidence for warm-bloodedness in dinosaurs.

It was highly vascularized but not truly fibro-lamellar in nature.

It supported the claim that bone growth in dinosaurs was periodic in nature.
Director
Director
User avatar
V
Joined: 06 Jan 2015
Posts: 713
Location: India
Concentration: Operations, Finance
GPA: 3.35
WE: Information Technology (Computer Software)
Re: Scientists studying the physiology of dinosaurs have long debated whet  [#permalink]

Show Tags

New post 07 Aug 2019, 02:30
1
HI SajjadAhmad, u1983, workout GMATNinjaTwo

Please add the below question into the passage :-) Tag : GMATPrep EP2

The passage suggests that, unlike Bakker, de Ricqlès believed which of the following about the highly vascularized, fibro-lamellar bone mentioned in the highlighted text?

1)It was a type of bone found only in a small group of dinosaurs.
2)It had characteristics that were inconsistent with a growth rate as rapid as that of mammals.
3)It did not provide sufficiently compelling evidence for warm-bloodedness in dinosaurs.
4)It was highly vascularized but not truly fibro-lamellar in nature.
5)It supported the claim that bone growth in dinosaurs was periodic in nature.

OA:

Attachment:
RC.JPG
RC.JPG [ 163.6 KiB | Viewed 2301 times ]

_________________
आत्मनॊ मोक्षार्थम् जगद्धिताय च

Resource: GMATPrep RCs With Solution
GMAT Club Bot
Re: Scientists studying the physiology of dinosaurs have long debated whet   [#permalink] 07 Aug 2019, 02:30
Display posts from previous: Sort by

Scientists studying the physiology of dinosaurs have long debated whet

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





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