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CBSE Class 10 Heredity and Evolution — practice questions — page 2

Explore 50 free Heredity and Evolution questions in CBSE Class 10 Science. Open each question or exercise to read its content, reference answers and available explanation.

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Heredity and Evolution questions and exercises with answers

Showing questions 31–50 of 50.

Select the correct statementRead the answer and worked solution →A trait in an organism is influenced byRead the answer and worked solution →Select the group which shares maximum number of common charactersRead the answer and worked solution →From the list given below, select the character which can be acquired but not inheritedRead the answer and worked solution →The number of pair (s) of sex chromosomes in the zygote of humans isRead the answer and worked solution →The theory of evolution of species by natural selection was given byRead the answer and worked solution →Heredity is best described as the transfer of biological characters from one generation to the next through which agents?Read the answer and worked solution →Who is regarded as the pioneer of modern genetics for his research on heredity?Read the answer and worked solution →Whose mutational theory of 1901 explained the reasons behind sudden hereditary changes?Read the answer and worked solution →The trio of Avery, McCarty and McLeod proved in 1944 that the genetic material in all living organisms except viruses is which molecule?Read the answer and worked solution →During transcription, mRNA is synthesised using how many of the two strands of a DNA molecule?Read the answer and worked solution →In RNA, which nitrogen base takes the place of the thymine that is found in DNA?Read the answer and worked solution →How many nucleotides make up the triplet codon that codes for a single amino acid?Read the answer and worked solution →Which Indian-origin scientist received the 1968 Nobel Prize for his work on triplet codons for the 20 amino acids?Read the answer and worked solution →On a tRNA molecule, the sequence that is complementary to the codon on mRNA is called the:Read the answer and worked solution →The amino acids brought in by tRNA are joined together by peptide bonds with the help of which molecule?Read the answer and worked solution →Match each Mendelian genetic term with its definition:Read the answer and worked solution →Match each of Mendel's classic genetic ratios with its cross:Read the answer and worked solution →Match each human sex determination chromosome rule:Read the answer and worked solution →Match each evolutionary anatomy concept with its definition:Read the answer and worked solution →

Worked practice questions

Select the correct statement

  1. Tendril of a pea plant and phylloclade of Opuntia are analogous
  2. Wings of birds and limbs of lizards are analogous
  3. Wings of birds and wings of bat are homologous
  4. Tendril of a pea plant and phylloclade of Opuntia are homologous
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Correct answer: D. Tendril of a pea plant and phylloclade of Opuntia are homologous

This Heredity and Evolution item tests a core Biology concept. Correct answer: Tendril of a pea plant and phylloclade of Opuntia are homologous. _Source: syllabus Exemplar Science Class 10_

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A trait in an organism is influenced by

  1. both maternal and paternal DNA
  2. paternal DNA only
  3. maternal DNA only
  4. neither by paternal nor by maternal DNA
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Correct answer: A. both maternal and paternal DNA

This Heredity and Evolution item tests a core Biology concept. Correct answer: both maternal and paternal DNA. _Source: syllabus Exemplar Science Class 10_

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Select the group which shares maximum number of common characters

  1. two species of a genus
  2. two individuals of a species
  3. two genera of a family
  4. two genera of two families
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Correct answer: B. two individuals of a species

This Heredity and Evolution item tests a core Biology concept. Correct answer: two individuals of a species. _Source: syllabus Exemplar Science Class 10_

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