PYQSide ExamsMy practice

Evolution · Question 65

AIPMT 2008MCQMedium📈 Topic in 75% papers+4−1
1

Which one of the following pairs of items correctly belongs to the category of organs mentioned against it?

  1. Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs
  2. Wings of honey bee and wings of crow - homologous organs
  3. Thorn of Bougainvillea and tendrils of Cucurbita - analogous organs
  4. Nictitating membrane and blind spot in human eye - vestigial organs

Answer

(1) Nephridia of earthworm and Malpighian tubules of cockroach - excretory organs

Solution

As per NCERT, the excretory organs of annelids (earthworm) are nephridia and those of insects (cockroach) are Malpighian tubules. Hence (1) is correct.

⇒ As per NCERT, wings of butterfly (insect) and of birds are analogous, not homologous, so (2) is wrong.

⇒ As per NCERT, the thorn of Bougainvillea and the tendril of Cucurbita (both modified stems) represent homology, so (3) is wrong.

⇒ The nictitating membrane is vestigial in humans, but the blind spot is only the point where the optic nerve leaves the eye, not a vestigial organ, so (4) is wrong.

Answer: (1)

AIPMT 2008

Keep practising — Evolution

2

Darwin's finches are a good example of –

  1. Convergent evolution
  2. Adaptive radiation
  3. Connecting link
  4. Industrial melanism
AIPMT 2008
3

Which one of the following scientist's name is correctly matched with the theory put forth by him?

  1. Mendel — Theory of pangenesis
  2. de Vries — Natural selection
  3. Pasteur — Inheritance of acquired characters
  4. Weismann — Theory of continuity of germplasm
AIPMT 2008
4

Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?

  1. They could separate combinations of molecules from the surroundings
  2. They were able to reproduce
  3. They were partially isolated from the surroundings
  4. They could maintain an internal environment
AIPMT 2008
5

Thorn of Bougainvillea and tendril of Cucurbita are examples of:

  1. analogous organs
  2. homologous organs
  3. vestigial organs
  4. retrogressive evolution
AIPMT 2008
6

The concept of chemical evolution is based on-

  1. Crystallization of chemicals
  2. Effect of solar radiation on chemicals
  3. Possible origin of life by combination of chemicals under suitable environmental conditions
  4. Interaction of water, air and clay under intense heat
AIPMT 2007
7

The finches of Galapagos islands provide an evidence in favour of-

  1. Special Creation
  2. Biogeographical Evolution
  3. Evolution due to Mutation
  4. Retrogressive Evolution
AIPMT 2007
8

When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:-

  1. Microevolution
  2. Convergent evolution
  3. Co-evolution
  4. Divergent evolution
AIPMT 2007
9

Adaptive radiation refers to:-

  1. Adaptations due to Geographical isolation
  2. Migration of members of a species to different geographical areas
  3. Evolution of different species from a common ancestor
  4. Power of adaptation in an individual to a variety of environments
AIPMT 2007
10

If the mean and the median pertaining to a certain character of a population are of the same value, the following is most likely to occur:-

  1. A normal distribution
  2. A T-shaped curve
  3. A skewed curve
  4. A bi-modal distribution
AIPMT 2007
11

Which one of the following statements is correct?

  1. Ontogeny repeats phylogeny.
  2. There is no evidence of the existence of gills during embryogenesis of mammals.
  3. Stem cells are specialized cells.
  4. All plant and animal cells are totipotent.
AIPMT 2007

All Evolution PYQs →

PDFDownload Evolution PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Zoology chapters
Class 11Animal KingdomStructural Organisation in AnimalsBiomolecules (Biology)Digestion and AbsorptionBreathing and Exchange of GasesBody Fluids and CirculationExcretory Products and their EliminationLocomotion and MovementNeural Control and CoordinationChemical Coordination and Integration
Class 12Human ReproductionReproductive HealthEvolutionHuman Health and DiseaseBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsBiology Experimental Skills