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Heredity and Evolution

This test comprises of questions from Hereditary and Evolution concept.

16 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

A tall plant (Tt) crosses with another tall plant (Tt). Which of the following is true for the offsprings?

  1. All plants are tall.
  2. All plants are short.
  3. 3 plants are tall and 1 plant is short.
  4. 3 plants are short and 1 plant is tall.
  5. NA
Question 2 Multiple Choice (Single Answer)

A human baby will be female if its 23rd chromosome pair is

  1. XX
  2. XY
  3. XXY
  4. XYY
  5. NA
Question 3 Multiple Choice (Single Answer)

Vermiform appendix, nictitating membrane and hair on the body of human beings are examples of

  1. analogous organs
  2. vestigial organs
  3. fossils
  4. homologous organs
  5. NA
Question 4 Multiple Choice (Single Answer)

Regardless of where we are living right now, our genetic roots can be traced from

  1. Europe
  2. Asia
  3. Australia
  4. Africa
  5. NA
Question 5 Multiple Choice (Single Answer)

If round green (RRyy) is crossed with wrinkled yellow (rrYY), which type of fruit will it produce in F1 generation?

  1. Round green
  2. Round yellow
  3. Wrinkled yellow
  4. Wrinkled green
  5. NA
Question 6 Multiple Choice (Single Answer)

According to Darwin's theory of evolution, differences between species may be the result of

  1. mutagenic agents
  2. natural selection
  3. the disuse of body structures
  4. None of these
  5. NA
Question 7 Multiple Choice (Single Answer)

Sex in humans is determined at the time of

  1. fertilisation of gametes
  2. formation of male and female gametes
  3. when the zygote is developing
  4. when the embryo is developing
  5. NA
Question 8 Multiple Choice (Single Answer)

Which of the following statements is not true with respect to variation?

  1. All variations in a species have equal chance of survival.
  2. Change in genetic compositions results in variation.
  3. Selection of variants by environmental factors forms the basis of evolutionary process.
  4. Variation is minimum in sexual reproduction.
  5. NA
Question 9 Multiple Choice (Single Answer)

____ have the same function, but different origin.

  1. Analogous organs
  2. Vestigial organs
  3. Fossils
  4. Homologous organs
  5. NA
Question 10 Multiple Choice (Single Answer)

Fossils are found in the deeper layers of Earth. What conclusion can be drawn from this?

  1. Fossils are most recent.
  2. Fossils are more than a thousand years old.
  3. The age of fossils cannot be computed.
  4. Fossils may be old or recent, their position is not important.
  5. NA
Question 11 Multiple Choice (Single Answer)

If T is for tallness and t for dwarfness, what shall be the genotype of a tall pea plant according to Mendelism?

  1. TT
  2. tt
  3. Tt
  4. Either TT or Tt
  5. NA
Question 12 Multiple Choice (Single Answer)

Surgically removing tails of mice over several generations does not yield mice without tails. What does it prove?

  1. Cutting tails does not cause genetic change. So, it is not inherited.
  2. Acquired characters during one's own life are not inherited.
  3. Neither (1) nor (2)
  4. Both (1) and (2)
  5. NA
Question 13 Multiple Choice (Single Answer)

Which of the following characteristics of parents can be inherited by children?

  1. Deep scar on chin
  2. Scub nose
  3. Technique of swimming
  4. Cut nose
  5. NA
Question 14 Multiple Choice (Single Answer)

Which of the following are homologous organs?

  1. Forelimbs of frogs, birds and humans
  2. Flippers of dolphins and wings of bats
  3. Neither (1) nor (2)
  4. Both (1) and (2)
  5. NA
Question 15 Multiple Choice (Single Answer)

To create the primitive conditions that may have existed at the time of origin of life, _________ were subjected to electrical discharge.

  1. H2, NH3, CO2 and H2O
  2. H2, CH4, H2O and CO2
  3. H2, CH4, C2H6 and CO2
  4. H2, NH3, NO2 and H2O
  5. NA
Question 16 Multiple Choice (Single Answer)

Some dinosaurs had feathers, although they could not fly. But birds have feathers that help them fly. In the context of evolution, this means that

  1. reptiles have evolved from birds
  2. there is no evolutionary connection between reptiles and birds
  3. feathers are homologous structures in both the organisms
  4. birds have evolved from reptiles
  5. NA
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