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# For some birds the sense of smell appears to play a role in

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VP
Joined: 03 Apr 2007
Posts: 1339

Kudos [?]: 859 [0], given: 10

For some birds the sense of smell appears to play a role in [#permalink]

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02 Jul 2008, 18:28
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Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 2 sessions

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For some birds the sense of smell appears to play a role in navigation, since pigeons with surgically removed olfactory nerves were found to have increased difficulties in homing.
(A) were found to have increased difficulties
(B) have been found to have increased difficulty
(C) were found to have increasing difficulty
(D) had been found to have increased difficulties
(E) have been found to have increasing difficulties

Kudos [?]: 859 [0], given: 10

Director
Joined: 10 Sep 2007
Posts: 934

Kudos [?]: 354 [0], given: 0

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02 Jul 2008, 20:05
(A) were found to have increased difficulties
"were" seems wrong in this context.

(B) have been found to have increased difficulty
Seems OK.

(C) were found to have increasing difficulty
"were" and "increasing difficulty" both are wrong in this context.

(D) had been found to have increased difficulties

(E) have been found to have increasing difficulties
"increasing difficulty" both are wrong in this context.

IMO B.

Kudos [?]: 354 [0], given: 0

Senior Manager
Joined: 18 Jun 2007
Posts: 285

Kudos [?]: 63 [0], given: 0

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02 Jul 2008, 20:54
goalsnr wrote:
For some birds the sense of smell appears to play a role in navigation, since pigeons with surgically removed olfactory nerves were found to have increased difficulties in homing.
(A) were found to have increased difficulties
(B) have been found to have increased difficulty
(C) were found to have increasing difficulty
(D) had been found to have increased difficulties
(E) have been found to have increasing difficulties

I am curious why were found is wrong the problem I have with A is the use of difficulties.
Why have been here is preffered over were?
By the POE OA IMO is B

Kudos [?]: 63 [0], given: 0

Director
Joined: 01 Jan 2008
Posts: 504

Kudos [?]: 54 [0], given: 0

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02 Jul 2008, 23:04

There is a rule :

whenever since denotes/ means because we have to use "present perfect tense" .

This leaves us with option B & E.

Secondly homing is singular hence difficulty should be used and not difficulties.

Hence B

Kudos [?]: 54 [0], given: 0

Senior Manager
Joined: 18 Jun 2007
Posts: 285

Kudos [?]: 63 [0], given: 0

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03 Jul 2008, 11:03
bhatiagp wrote:

There is a rule :

whenever since denotes/ means because we have to use "present perfect tense" .

This leaves us with option B & E.

Secondly homing is singular hence difficulty should be used and not difficulties.

Hence B

Thx bhatia

Kudos [?]: 63 [0], given: 0

VP
Joined: 03 Apr 2007
Posts: 1339

Kudos [?]: 859 [0], given: 10

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03 Jul 2008, 15:05
rishi2377 wrote:
bhatiagp wrote:

There is a rule :

whenever since denotes/ means because we have to use "present perfect tense" .

This leaves us with option B & E.

Secondly homing is singular hence difficulty should be used and not difficulties.

Hence B

Thx bhatia

To add futher...Since represents a continous/progressing action.Hence a present perfect is required when "since" is used in a sentence.

Kudos [?]: 859 [0], given: 10

Re: SC-pigeons   [#permalink] 03 Jul 2008, 15:05
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# For some birds the sense of smell appears to play a role in

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