Meritnation|Apr 21st, 2015 01:10pm
Aspirants of medical and dental colleges are all set to appear for the All India Pre Medical Test, better known as the AIPMT exam, to be held on 3rd May, 2015. Since the admit cards for AIPMT 2015 were released on the official website, aspirants have taken their preparations a step further.
The three subjects in the AIPMT 2015 syllabus are Physics, Chemistry and Biology, Biology being further divided into Botany and Zoology. With only about 10 days left till the day of the exam, students are sure to be in search of last minute tricks and solutions to better their chances at a good score.
Meritnation experts studied and analysed the trends in the Biology section of the AIPMT question papers and created a list of questions that have appeared regularly in the last 10 years, in some form or the other. These questions are repeated almost every year with some variation. Aspirants may make use of the following questions to revise their AIPMT syllabus, and score well in exams!
Option A | Option B | Option C | Option D |
Analogous organs | Adaptive radiation | Homologous organs | Convergent evolution |
Correct Answer: Option C
Forelimbs of a cat and a lizard are used in walking; forelimbs of a whale are used in swimming and forelimbs of a bat are used in flying. These are examples of homologous organs as all of the mentioned organs are modified forelimbs that have become different through adaptation due to different types of habitats.
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Option A | Option B | Option C | Option D |
Wings of Bat and Wings of Pigeon | Gills of Prawn and Lungs of Man | Thorns of Bougainvillea and Tendrils of Cucurbita | Flippers of Dolphin and Legs of Horse |
Correct Answer: Option A
The wings of bats and pigeons have same function but they are not anatomically similar. Similarly the gills of prawns and lungs of man have same function of respiration but they are also anatomically different.
Organs given in options (3) and (4) are homologous organs.
Hence, the correct options for this question could be (1) or (2).
Note: If we consider convergent evolution, only option (1) would be the correct answer as prawns and humans have different habitats, therefore their organs are bound to be anatomically different but bats and birds share a common habitat, adaptations and mode of life.
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Option A | Option B | Option C | Option D | ||||||||||||||||
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Correct Answer: Option A
Convergent evolution: Eyes of octopus and mammals
Divergent evolution: Bones of forelimbs of vertebrates
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Option A | Option B | Option C | Option D |
Industrial melanism | Connecting link | Adaptive radiation | Convergent evolution |
Correct Answer: Option C
Adaptive radiation
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Option A | Option B | Option C | Option D |
Morphological features | Chemical constituents | Floral characters | Evolutionary relationships |
Correct Answer: Option D
Evolutionary relationships
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Option A | Option B | Option C | Option D |
Retrogressive evolution | Analogous organs | Homologous organs | Vestigial organs |
Correct Answer: Option C
Homologous organs
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Option A | Option B | Option C | Option D |
Wings of honey-bee and wings of crow – Homologous organs | Thorn of Bougainvillea and tendrils of Cucurbita – Analogous organs | Nictitating membrane and blind spot in human eye – Vestigial organs | Nephridia of earthworm and malpighian tubules of cockroach – Excretory organs |
Correct Answer: Option D
Wings of honey bee and the wings of crow are analogous organs, thorn of Bougainvillea and tendrils of Cucurbita are homologous organs & blind spot in humans represent the point where the optic nerve will leave the eye ball so it is not vestigial.
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Share with your friends and compare how you fair against the toughest questions ever asked in AIPMT Biology.
Best of luck for AIPMT 2015 on 3rd May!
Add Comment 1 Comment
1. shreya | April 23rd, 2015 at 12:42 am
its really helpful!!!!
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