NEET Biology Class 12 - 20 Important Questions and Answers
Q1: What is the function of the placenta during pregnancy?
A1: The placenta facilitates the exchange of nutrients, gases, and wastes between the mother and
the fetus.
Q2: What is apomixis?
A2: Apomixis is a form of asexual reproduction that mimics sexual reproduction but does not involve
fertilization.
Q3: What are Mendel's laws of inheritance?
A3: Mendel's laws include the Law of Dominance, Law of Segregation, and Law of Independent
Assortment.
Q4: Define linkage and recombination.
A4: Linkage is the tendency of genes on the same chromosome to be inherited together, while
recombination is the exchange of genetic material between chromosomes.
Q5: What is genetic drift?
A5: Genetic drift is a mechanism of evolution that refers to random changes in the frequency of
alleles in a population.
Q6: What are the components of the human male reproductive system?
A6: It includes testes, vas deferens, seminal vesicles, prostate gland, and penis.
Q7: What is adaptive radiation?
A7: Adaptive radiation is the evolution of different species from a common ancestor in response to
different environmental conditions.
Q8: Define innate immunity.
A8: Innate immunity is the non-specific first line of defense present from birth.
Q9: What is a codon?
A9: A codon is a sequence of three nucleotides in mRNA that codes for a specific amino acid.
Q1: What is the function of the placenta during pregnancy?
A1: The placenta facilitates the exchange of nutrients, gases, and wastes between the mother and
the fetus.
Q2: What is apomixis?
A2: Apomixis is a form of asexual reproduction that mimics sexual reproduction but does not involve
fertilization.
Q3: What are Mendel's laws of inheritance?
A3: Mendel's laws include the Law of Dominance, Law of Segregation, and Law of Independent
Assortment.
Q4: Define linkage and recombination.
A4: Linkage is the tendency of genes on the same chromosome to be inherited together, while
recombination is the exchange of genetic material between chromosomes.
Q5: What is genetic drift?
A5: Genetic drift is a mechanism of evolution that refers to random changes in the frequency of
alleles in a population.
Q6: What are the components of the human male reproductive system?
A6: It includes testes, vas deferens, seminal vesicles, prostate gland, and penis.
Q7: What is adaptive radiation?
A7: Adaptive radiation is the evolution of different species from a common ancestor in response to
different environmental conditions.
Q8: Define innate immunity.
A8: Innate immunity is the non-specific first line of defense present from birth.
Q9: What is a codon?
A9: A codon is a sequence of three nucleotides in mRNA that codes for a specific amino acid.
