• Heredity And Evolution


    Assess Your Basics. Answer the Questions Below OR Attempt 

    QUIZ on Heredity and Evolution


    1. The Sperms and eggs in human body are called as

      1. Sex Chromosomes

      2. Homologous Chromosomes

      3. Sex Cells

      4. Meiosis




    1. The genetic makeup of a cell is called

      1. Phenotype

      2. Genotype

      3. Meiosis

      4. Mitosis




    1. The physical makeup of a cell is called

      1. Phenotype

      2. Genotype

      3. Meiosis

      4. Mitosis




    1. Cells with half the normal number of chromosomes are produced by?

      1. mitosis

      2. meiosis

      3. alleles

      4. chromosomes




    1. Different versions of the same genes are called

      1. Sex cells

      2. alleles

      3. Sex chromosomes

      4. Phenotype




    1. Genes are found on 

      1. Chromosomes

      2. Ribosomes

      3. Lysosomes

      4. RNA

      5. proteins




    1. The process by which produces sex cells is

      1. Mitosis

      2. meiosis

      3. secretions

      4. photosynthesis




    1. The passing of traits from parents to offspring is called

      1. heredity

      2. recessive

      3. Meiosis

      4. reproduction




    1. What happens in the process of meiosis?

      1. the chromosomes are copied twice

      2. the nucleus divides once

      3. A single cell produces four cellsl

      4. all of the above




    1. Identify the pair of bases which appear together in a DNA molecule?

      1. TC & GA

      2. KL & MN

      3. AT & CG

      4. KM & LN




    1. The shape of DNA is known as 

      1. double helix

      2. round

      3. oval

      4. Not defined




    1. A change in the order of bases in DNA is called a

      1. mutation

      2. mutagen

      3. allele

      4. mutant




    1. A gene is

      1. a set of instructions for each trait

      2. instructions on how to make protein

      3. a portion of a strand of DNA

      4. All of the above




    1. When a human breeds two individuals of the same species based on the characteristics they prefer to have in the offspring of those individuals, it is called

      1. evolution

      2. pedigree

      3. selective breeding

      4. natural selection




    1. DNA

    1. is made up of three subunits

    2. has a structure like a twisted ladder

    3. cannot be repaired if it is mutated

    4. all of the above




    1. What is the complementary strand for the following sequence of bases A and C

    1. T, G respectively 

    2. G, T respectively

    3. T, T respectively

    4. G, G respectively




    1. Where are fossils commonly found?

    1. sedimentary rocks

    2. igneous rocks

    3. Granite rocks

    4. loose sand 




    1. Which one of the following is not a part of the natural selection theory?

    1. overproduction

    2. genetic variation

    3. selective breeding

    4. successful reproduction




    1. Gradual change over time is

    1. mutation

    2. evolution

    3. natural selection

    4. selective breeding




    1. Who gave the theory of Natural Selection?

      1. Gregor Mendel

      2. Mendeleev

      3. Charles Darwin

      4. Bose-Einstein




    1. What is the study of fossils called?

      1. Paleontology

      2. Ornithology

      3. Fossilization

      4. Zoology




    1. When a group of organisms exchange genes through interbreeding, it is called as

      1. Ecology

      2. Population

      3. ecosystem

      4. Species




    1. The phenomenon of formation of new species from the pre existing species which is genetically different and can’t interbreed is called as 

      1. natural selection

      2. mutation

      3. genetic drift

      4. speciation




    1. What is meant by Survival of the fittest?




    1. What is meant by Genome?

      1. All the cells in an organism

      2. All the DNA in an organism

      3. All the RNA in an organism

      4. All the proteins in an organism




    1. Where are chromosomes located?

    1. Inside Nucleus

    2. Inside genes

    3. Inside nucleosome

    4. None of the above




    1. What is true about Haploid Chromosomes?

    1. Haploid chromosomes have only one set of chromosomes (e.g. 23 in humans)

    2. Sperm, the male reproductive cell has 23 chromosomes

    3. Ovum or Egg the female reproductive cell has 23 chromosomes

    4. Haploid chromosomes are created by the cell division method called meiosis

    5. All the above




    1. Which of the following is not an example of heredity traits?

    1. Colour of your eyes

    2. Colour of your hair

    3. Your height

    4. Being Overweight or underweight 




    1. What is Down’s Syndrome?

    1. DNA is not accurately copied and distributed during cell division

    2. Three copies of chromosome 21 in the offspring instead of two copies in the offspring

    3. Offspring fails to develop properly due to variation in genome

    4. All of the above




    1. Chromatin and chromosomes are structurally different in the following manner:

    1. Chromatin material refers to the chromosomes lying inside the nucleus in the form of uncoiled, tangled and loose strands when the cell is not dividing 

    2. Chromosome refers to the short thread like structures produced after chromatin divides during cell division

    3. Chromosomes have a well defined structure and strands are joined together at the center, called centromere. The shorter arm is called as ‘p’ arm and the longer arm is called as ‘q’ arm

    4. Chromosomes may be Haploids (only one set of chromosomes e.g. in egg, sperm) or Diploids (two set of chromosomes arranged in scissor shape)

    5. All of the above




    31. The study of heredity is called ________________.




    32. What is genetic variation?




    33. Mutation 

    1. Is a permanent change in the DNA

    2. Happens rarely because the genome we are born with usually remain same throughout our life

    3. Is a continuous process

    4. May be harmful or useful

    5. Only the mutation in sperm or egg can be passed to the offspring

    6. Our body can sometimes recognise and destroy the harmful mutations but not always

    7. All of the above




    34. Cancer starts in a living organism due to

    1. Harmful Mutations in the DNA

    2. Cells with Harmful Mutations in the DNA which our body is not able to destroy

    3. Useful Mutations in the DNA

    4. Access eating of junk food




    35. How are traits passed on from one generation to next?

    1. Through genes that carry specific instructions about the trait in the form of nucleotide bases (ATCG in specific combination and number)

    2. Due to variation

    3. Due to evolution

    4. Due to mutation 




    36. Chromosomes are made up of 

    1. DNA

    2. Chromatin

    3. Nucleolus

    4. Nucleotide




    37. What is Nucleoid?

    1. Nucleoid is a particular area in which prokaryotes assemble their genetic materials

    2. Nucleoid is poorly organized and small

    3. Nucleoids lack a protective membrane

    4. Nucleoplasm and nucleolus are not found in a nucleoid

    5. All of the above




    38. Prokaryotes do not have genetic material. (T / F)




    39. Cells with two complete sets of chromosomes are called

    1. DNA

    2. Haploid chromosomes

    3. Diploid chromosomes

    4. Genes




    40. Cells with only one set of chromosomes are called

    1. DNA

    2. Haploids 

    3. Diploids

    4. Genes




    41. Haploids are most often found in 

    1. Nerve cells

    2. Sperms and Eggs

    3. Dendrons

    4. Bone cells




    42. Haploid cells are created during the cell division process termed

    1. Mitosis

    2. Meiosis

    3. Reproduction

    4. None of the above




    43. The functional and physical unit of heredity is called as

    1. Chromosome

    2. DNA

    3. RNA

    4. Gene




    44. Chromosomes are made up of 

    1. DNA

    2. RNA

    3. Ribosomes

    4. Lysosomes




    45. Chromosomes carry all the information needed for a cell to 

    1. Grow

    2. Thrive

    3. Reproduce

    4. All of the above




    46. Chromatin is present inside

    1. Nucleus

    2. Nucleolus

    3. Nucleoid

    4. Chromosome 




    47. Segments of DNA in a specific pattern carrying instructions about a particular trait are called as 

    1. Chromosomes

    2. Genes

    3. Proteins

    4. RNA




    48. How are chromosomes inherited in humans?

    1. One copy of each chromosome is inherited from the mother and the other copy of each chromosome is inherited from the father

    2. Two copies of each chromosome are inherited from the mother and the two copies of each chromosome are inherited from the father

    3. Any of the above combination is possible

    4. The chromosomes are selected randomly from the mother and father 




    49. How are traits passed on from generation to generation in humans?

    1. Through genes, one gene responsible to carry on one trait from parent to offspring

    2. One copy of each chromosome is inherited from the mother and the other copy of each chromosome is inherited from the father

    3. One Sex chromosome is inherited from the mother and the other sex chromosome is inherited from the father




    50. How are traits passed onto the next generation?

    1. Through genes, one gene for one trait

    2. Through genes, one gene for many traits

    3. Through RNA, one protein for one trait

    4. Through RNA, many proteins for many traits




    51. The total number of genes in human beings are

    1. 10000 - 15000

    2. 15000 - 20000

    3. 20000 - 25000

    4. 25000 - 30000




    52. Every organism of the same species has

    1. Same set of genes

    2. Different set of genes

    3. May vary from species to species

    4. None of the above




    53. Gene is made up of 

    1. DNA

    2. Chromosomes

    3. Variations

    4. Inheritance




    54. The nucleotide bases in DNA are

    1. Adenine

    2. Thymine

    3. Cytosine

    4. Guanine




    55. The total number of Nucleotide bases (A, T, C, G)  in humans are:

    1. 1 billion pairs

    2. 2 billion pairs

    3. 3 billion pairs

    4. 4 billion pairs




    56. The collection of genes in an individual  is called ______

    1. Genotype

    2. Phenotype

    3. Trait

    4. None of the above




    57. What is Variation?

    1. Genetic differences between parent and offspring

    2. Combination of Genes and Environment

    3. An environment related or gene related change that affects our genetic makeup

    4. All of the above 




    58. Our genetic makeup is constant throughout our life, unless some genetic variation takes place (T / F)




    59. For evolution of species

    1. Genetic variation is necessary

    2. Environment supporting the genetic variation is necessary

    3. Species reproducing and taking the variation to next generation is necessary

    4. All of the above






    60. Which of the following is incorrect about mutation in organisms?

    1. Sudden

    2. Continuous

    3. Change in chromosomes and genes

    4. Leads to variation in DNA




    61. Which of the following does not participate in the formation of chromosomes?

    1. a) DNA

    2. Proteins

    3. RNA

    4. Endoplasmic reticulum




    62. Which of the following cannot be considered as mutation?

    a) Gene mutation

    b) Chromosomal aberrations

    c) Genomic mutations

    d) Colourful mutations





    63. Where did we come from?

    1. No known exactly

    2. May be, from chimps

    3. All the species evolved from the same ancestor

    4. All of the above




    64. According to Darwin’s theory, Evolution works through

    1. Natural selection where Nature selects the best features suitable for better adaptability 

    2. Nature discards the bad changes and keeps only the good changes to be passed onto the next generation

    3. Survival of the fittest since some species are better at surviving than others and can reproduce in good numbers to carry the change to next generation

    4. Speciation in order to form a new species, genetically different from its ancestor

    5. All of the above




    65. According to evolution, all living things are related because

    1. All have the same ancestor

    2. Our ancestral history is unknown

    3. Plants have same ancestors and animals have same ancestors

    4. None of the above




    66. How are new species produced?

    1. Due to change in genotypic character of species

    2. Due to change in environment, compelling species to genetically modify themselves to adapt to the environment

    3. Nature selects the best variation in the genes and supports survival of the fit ones

    4. All of the above




    67. Our direct ancestors may be - chimps, having no tails 




    68. Human species is called as Homo Spaiens




    69. Birds originated from - Dinosaurs with teeth and wings




    70. Total number of Chromosomes in Humans is

    1. 23 pairs

    2. 46

    3. 22 autosomes + sex chromosome

    4. All of the above




    71. Sex chromosomes in humans are a 

    1. Pair of X and Y chromosomes

    2. One X chromosomes

    3. One Y chromosome

    4. 23rd pair of chromosomes in humans is regarded as the sex chromosome pair




    72. The word RNA stands for

    1. ribonucleic acid

    2. deoxyribonucleic acid

    3. nucleic acid

    4. proteins




    73. The word DNA stands for

    1. ribonucleic acid

    2. deoxyribonucleic acid

    3. nucleic acid

    4. Proteins




    74. A change in the structure of the chromosomes and genes is called

    1. mutation

    2. deletion

    3. addition

    4. insertion




     75. Which of the following pyrimidines is not present in DNA is

    1. adenine

    2. guanine

    3. uracil

    4. thymine




    76. What leads to speciation of populations?

    (a) reproductive health

    (b) reproductive isolation

    (c) population growth

    (d) extinction




    77. The phenomenon of formation of new species from the pre existing species which is genetically different and can’t interbreed is called as 

    (a) natural selection

    (b) mutation

    (c) genetic drift

    (d) speciation




    78. Identify the sex-linked disease out of the following options

    (a) Malignancy 

    (b) Alzheimer’s

    (c) Leukemia

    (d) Colour blindness




    79. How many sex chromosomes are present in a human body?

    (a) 1 pair

    (b) 2 pairs

    (c) 3 pairs

    (d) 4 pairs




    80. Most of the genetic disorders occur due to _________.

    (a) The gross chromosomal abnormalities

    (b) The gender of an individual

    (c) Proteins in the RNA

    (d) Mutation 


    Sol: (a) Mutation.




    81. The thread-like structures, which appear inside the nucleus at the time of cell division, are called __________.

    (a) Centrioles

    (b) Asters

    (c) Chromosomes

    (d) Spindle fibers

    Sol: (c) Chromosomes.




    82. Chromatin material is composed of

    (a) DNA

    (b) RNA

    (c) DNA and proteins

    (d) DNA, RNA and proteins

    Sol: (d) DNA, RNA and proteins.




    83. How many autosomal chromosomes are present in a human being?

    (a) 20 pairs

    (b) 22 pairs

    (c) 23 pairs

    (d) 44 pairs

    Sol: (b) 22 pairs.




    84. Which of the following living species comprises more than 200 chromosomes?

    (a) Amoeba

    (b) Buffalo

    (c) Chicken

    (d) Giraffe

    Sol: (a) Amoeba.




    85. Chromosomal constitution in human males can be written as___________.

    (a) 46

    (b) 44+2

    (c) 44A+XY

    (d) 44A+XX

    Sol: (d) 44A+XY




    86. The tendency of an offspring to resemble its parent is due to

    1. Variation

    2. Heredity

    3. Resemblance

    4. Evolution




    87. Who is known as the “Father of Genetics”?

    1. Morgan

    2. Mendel

    3. Watson

    4. Bateson




    88. The factor that initiates evolution is _____

    1. Variation of genes

    2. Mutation of genes

    3. Extinction of species

    4. Adaptation of species




    89. Natural Selection can be best described as

    1. Survival of the fittest members of a population

    2. Change in the proportion of variation within a population

    3. Struggle for existence

    4. The Reproductive Success of the members of a population who have best adapted to the environment




    90. Who is known as the father of evolution?

    1. Gregor Mendel

    2. Charles Darwin

    3. Lamarch

    4. Betton




    91. According to Darwin’s theory, “Natural Selection” takes place in the following different ways

    1. Variation – The changes in an organism that have accumulated over a period of time usually give rise to a new species

    2. Inheritance – Passing on these variations from one generation to next and ultimately leading to speciation

    3. A high rate of growth of population – The new species reproduces to give rise to more number of organisms than the environment can support

    4. Differential survival and reproduction – The superior variations lead to the survival of an organism and the inferior variations lead to their extinction. The superior variations are then inherited by offsprings during the process of reproduction

    5. All of the above


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Material : Class 10 - Biology

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