MCQ
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: $\text{tRNA}$ acts as an adapter molecule.
Reason: $\text{tRNA}$ recognizes codon sequence of $\text{mRNA}$ during translation.
  • A
    Both assertion and reason are true, and reason is the correct explanation of assertion.
  • Both assertion and reason are true, but reason is not the correct explanation of assertion.
  • C
    Assertion is true, but reason is false.
  • D
    Both assertion and reason are false

Answer

Correct option: B.
Both assertion and reason are true, but reason is not the correct explanation of assertion.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Nucellus functions as a nutritive tissue.
Reason: Nucellus is always exhausted completely during development of embryo sac.
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Complementary genes are non$-$allelic genes.
Reason: Complementary genes interact to produce a completely new trait.
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Lactose in lac operon is promoter gene.
Reason: Lactose inactivates the repressor gene.
Assertion : The use of fertilizers greatly enhances crop productivity.
Reason : Irrigation is very important in increasing crop productivity.
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Pollen wall is made up of two walls, the intine and the exine.
Reason: Both the walls have depositions of sporopollenin.
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion : Smoking causes oxygen deficiency in the body.
Reason: Carbon monoxide, when inhaled while smoking, combines with haemoglobin to form chemically stable compound.
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: A drop in temperature does not affect spermatogenesis.
Reason: During temperature drop, the smooth muscles contracts and bring the testes closer to the pelvic cavity.
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: The concept of one gene$-$one enzyme was changed to one gene$-$one polypeptide.
Reason: Each enzyme may consist of two or more different polypeptides.
For two statements are given$-$one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes $(a), (b), (c)$ and $(d)$ as given below.
Assertion: Mostly in a tetrad, all microspores are free.
Reason: Compound pollen grain and pollinium are formed by grouping of microspores.
Assertion (A): Large holes in Swiss cheese are due to the production of a large amount of carbon dioxide by specific microbe.
Reason (R): The specificity of characteristic texture, flavour and taste of Swiss cheese is due to the use of bacterium Propionibacterium shermanii.