Multiple Choice Questions

Advertisement

Assertion: Flavr-Savr tomato was the first transgenic commercial crop that entered the market.

Reason: Roundup variety of soybean was prepared through breeding.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


C.

If assertion is true but reason is false.

The Flavr-Savr tomato, was the first genetically modified fruit/vegetable to reach the market in USA. Roundup ready soybean is a genetically modified herbicide tolerant cultivar.


Advertisement

Assertion: XX-XY type of sex determination mechanism is an example of female heterogamety and is found in Drosophila.

Reason: Male heterogamety is seen in moths where males produce two different types of gamete.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Assertion: Restriction enzymes cut the strand of DNA to produce sticky ends.

Reason: Stickiness of the ends facilitates the action of the enzyme DNA polymerase.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Assertion: Chimpanzee is the closest relative of the present day humans.

Reason: The banding pattern in some autosomes of man and chimpanzee is remarkably similar.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Assertion: Analogous organs are a result of divergent evolution.

Reason: Eye of octopus and of mammals depict divergent evolution.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Advertisement

Refer to the given figure and choose the organism not related to the condition shown here.

  • Microsporum

  • Trichophyton

  • W. malayi

  • Epidermophyton


Assertion: Neurospora is commonly called water mould.

Reason: It belongs to basidiomycetes fungi.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Assertion: Somatic hybridisation is a process where protoplasts of two desired plants can be fused to develop improved plants.

Reason: Cross breeding can also induce variability

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Assertion: The honeybee queen copulates only once in her life time.

Reason: The honeybee queen can lay fertilised as well as unfertilised eggs.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


Advertisement

Which of the following conditions represents a case of codominant genes

  • A gene expresses itself, suppressing the phenotypic effect of its alleles.

  • Genes that are similar in phenotypic effect when present separately, but when together interact to produce a different trait.

  • Alleles, both of which interact to produce a trait, which may or may not resemble either of the parental types.

  • Alleles, each of which produces an independent effect in a heterozygous condition.