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Evolution · Question 103

AIPMT 2002MCQEasy📈 Topic in 50% papers+4−1
1

Which of the following is important for speciation ?

  1. Behavioural isolation
  2. Seasonal isolation
  3. Tropical isolation
  4. Reproductive isolation

Answer

(4) Reproductive isolation

Solution

Speciation is the formation of a new species from an existing one.

∵ A species is a group of interbreeding individuals ⇒ a new species arises only when a group can no longer interbreed with the parent population.

Behavioural and seasonal isolation are only particular kinds of reproductive isolation.

∴ Reproductive isolation (of any kind) is the key factor for speciation.

Answer: (4)

AIPMT 2002

Keep practising — Evolution

2

Which of the following are homologous organs ?

  1. Wings of birds & Pectoral fins of fish
  2. Wings of bat & Butterfly
  3. Legs of frog & Cockroach
  4. Wings of birds & Locust
AIPMT 2002
3

Genetic drift operates in : -

  1. Slow reproductive population
  2. Small isolated population
  3. Large isolated population
  4. Fast reproductive population
AIPMT 2002
4

There is no life on moon due to the absence of -

  1. O2
  2. Light
  3. Water
  4. Temperature
AIPMT 2002
5

According to fossils which discovered up to present time, origin and evolution of man was started from

  1. Java
  2. Africa
  3. China
  4. France
AIPMT 2002
6

In which condition, the gene ratio remains constant for any species population ?

  1. Gene flow
  2. Mutation
  3. Sexual selection
  4. Random mating
AIPMT 2002
7

Sequence of which of the following is used to know the phylogeny ?

  1. DNA
  2. r-RNA
  3. m-RNA
  4. t-RNA
AIPMT 2002
8

In which era reptiles were dominant ?

  1. Archaeozoic era
  2. Mesozoic era
  3. Coenozoic era
  4. Paleozoic era
AIPMT 2002
9

Half life period of C14 is : -

  1. 5000 years
  2. 50 years
  3. 500 years
  4. 5 104 years
AIPMT 2001
10

Similarities in organism with different genotype indicates : -

  1. Divergent evolution
  2. Macroevolution
  3. Convergent evolution
  4. Microevolution
AIPMT 2001
11

Reason of diversity in living beings : -

  1. Mutation
  2. Short term evolutionary change
  3. Long term evolutionary change
  4. Gradual change
AIPMT 2001

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All NEET Zoology chapters
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Class 12Human ReproductionReproductive HealthEvolutionHuman Health and DiseaseBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsBiology Experimental Skills