Q 1 – Which one of the following pairs are homologous organs?
(a) Forelimbs of a bird and wings of a bat.
(b) Wings of a bird and wings of a butterfly.
(c) Pectoral fins of a fish and forelimbs of a horse.
(d) Wings of a bat and wings of a cockroach.
(a) Forelimbs of a bird and wings of a bat.
Q 2 – Two pink coloured flowers on crossing resulted in 1 and 2 pink and 1 white flower progeny. The nature of cross will be:
A) Double fertilization
B) Self pollination
C) Cross pollination
D) No fertilization
C) Cross pollination
Q 3 – The theory of evolution of species by natural selection was given by
(a) Mendel
(b) Darwin
(c) Lamarck
(d) Weismann
(b) Darwin
Q 4 – The two versions of trait which are brought in by female and male gametes are situated at :
A) Copies of same chromosomes
B) Two different chromosomes
C) Sex chromosomes
D) Any chromosomes
A) Copies of same chromosomes
Q 5 – A cross between a tall pea-plant (TT) and a short pea-plant (tt) resulted in progenies that were all tall plants because
(a) tallness is the recessive trait.
(b) shortness is the dominant trait.
(c) height of pea-plant is not governed by gene T or t.
(d) tallness is the dominant trait.
(b) shortness is the dominant trait.
Q 6 – Which of the following scientist gave the principles of inheritance?
(a) Mendel
(b) Griffin
(c) Johanssen
(d) Watson and Crick
(a) Mendel
Q 7 – The number of pairs of sex chromosomes in the zygote of a human being is
(a) 2
(b) 3
(c) 1
(d) 4
(c) 1
Q 8 – Which one of the following pairs are homologous organs?
(a) Forelimbs of a bird and wings of a bat.
(b) Wings of a bird and wings of a butterfly.
(c) Pectoral fins of a fish and forelimbs of a horse.
(d) Wings of a bat and wings of a cockroach.
(a) Forelimbs of a bird and wings of a bat.
Q 9 – From below, select the character that is acquired not inherited ?
A) Colour of eye
B) Colour of skin
C) Size of body
D) Nature of hair
C) Size of body
Q 10 – A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
(a) O only
(b) A only
(c) AB
(d) Equal chance of acquiring blood group A or blood group O.
(d) Equal chance of acquiring blood group A or blood group O.
Q 11 – Select the group which shares maximum number of common characters-
(a) two genera of two families
(b) two species of a genus
(c) two genera of a family
(d) two individuals of a species
(d) two individuals of a species
Q 12 – What does the progeny of a tall plant with round seeds and a short plant with wrinkled seeds look like?
(a) All are tall with round seeds.
(b) All are short with round seeds.
(c) All are tall with wrinkled seeds.
(d) All are short with wrinkled seeds.
(d) two individuals of a species
Q 13 – Process of selecting individuals with desired characters by man is called
(a) Hybridization
(b) Reproduction
(c) Artificial selection
(d) Natural selection
(c) Artificial selection
Q 14 – The human species has genetic roots in
(a) Australia
(b) Africa
(c) America
(d) Indonesia
(b) Africa
Q 15 – What does the progeny of a tall plant with round seeds and a short plant with wrinkled seeds look like?
(a) All are tall with round seeds.
(b) All are short with round seeds.
(c) All are tall with wrinkled seeds.
(d) All are short with wrinkled seeds.
(a) All are tall with round seeds.
Q 16 – Which of the following is a totally impossible outcome of Mendel’s Experiment (cross breeding pure bred tall and short pea plants)
(a) 3 tall 1 short plant
(b) 24 tall and 8 short plants
(c) 8 tall and 0 short plants
(d) 4 tall plants and 1 medium-height plant.
(d) 4 tall plants and 1 medium-height plant.
Q 17 – A section of DNA providing information for one protein is called—
(a) Nucleus
(b) Chromosomes
(c) Trait
(d) Gene
(d) Gene
Q 18 – The process of evolution of a species whereby characteristics which help individual organisms to survive and reproduce are passed on to their owspring and those characteristics which do not help are not passed on is called
(a) Artificial selection
(b) Speciation
(c) Hybridization
(d) Natural selection
(d) Natural selection
Q 19 – Amongst which of the following animals, sex of the offsprings not genetically determined?
(a) Humans
(b) Snails
(c) Birds
(d) Dogs
(b) Snails
Q 20 – Identify the two organisms which are now extinct and are studied from their fossils.
(a) white tiger and sparrow
(b) dinosaur and fish (Knightia)
(c) ammonite and white tiger
(d) trilobite and white tiger
(b) dinosaur and fish (Knightia)
Q 21 – Some dinosaurs had feathers although they could not fly but birds have feathers that
help them to fly. In the context of evolution this means that-
(a) reptiles have evolved from birds
(b) there is no evolutionary connection between reptiles and birds
(c) feathers are homologous structure in both the organisms
(d) Birds have evolved from reptiles.
(d) Birds have evolved from reptiles.
Q 22 – Pure-bred pea plant A is crossed with purebred pea plant B. It is found that the plants which look like A do not appear in F1 generation but re-emerge in F2 generation. Which of the plants A and B are tall and dwarf?
(a) A are tall and B are dwarf.
(b) A are tall and B are also tall.
(c) A are dwarf and B are also dwarf
(d) A are dwarf and B are tall
(d) A are dwarf and B are tall
Q 23 – A zygote which has an X-chromosome inherited from the father will develop into a
(a) girl
(b) boy
(c) either boy or girl
(d) X-chromosome does not influence the sex of a child.
(a) girl
Q 24 – A cross between two individuals results in a ratio of 9 : 3 : 3 :1 for four possible phenotypes of progeny. This is an example of a
(a) Monohybrid cross
(b) Dihybrid cross
(c) Test cross
(d) F1 generation
(b) Dihybrid cross
Q 25 – According to the evolutionary theory formation of a new species occurs generally
due to-
(a) Sudden creation by nature.
(b) accumulation of variations over several generations
(c) clones formed during asexual reproduction
(d) Movement of individuals from one habitat to another.
(b) accumulation of variations over several generations
Q 26 – What is the probability that a human progeny will be a boy?
(a) 50%
(b) 56%
(c) 47.34%
(d) It varies
(a) 50%
Q 27 – Which of the following characters can be acquired but not inherited?
(a) Colour of skin
(b) Size of body
(c) Colour of eyes
(d) Texture of hair
(b) Size of body
Q 28 – If we breed a group of squirrels and surgically remove their tails, then amongst the progeny of these tailless squirrels–
(a) All have no tail
(b) All have a tail
(c) Some of them have tails
(d) Cannot be determined.
(b) All have a tail
Q 29 – Those organs which have different basic structure but have similar appearance and perform similar functions are called
(a) Analogous organs
(b) Homologous organs
(c) Vestigial organs
(d) None of these
(c) Vestigial organs
.Q 30 – Homologous organs have
(a) Same structure, same function
(b) Different structure, different function
(c) Same structure, different function
(d) Same function, different structure
(c) Same structure, different function
Q 31 – The remaps (or impressions) of dead animals or plant? that lived in the remote past are known as
(a) extinct species
(b) fossils
(c) naturally selected species
(d) none of the above
(b) fossils
Q 32 – Which of the following characters can be acquired but not inherited?
(a) Colour of skin
(b) Size of body
(c) Colour of eyes
(d) Texture of hair
(b) Size of body
Q 33 – The process by which new species develop from the existing species is known as
(a) Evolution
(b) Natural selection
(c) Artificial selection
(d) Speciation
(d) Speciation
Q 34 – The number of pairs of sex chromosomes in the zygote of a human being is
(a) 2
(b) 3
(c) 1
(d) 4
(c) 1
Q 35 – Which of the following is an example of genetic variation?
(a) One person has a scar, but his friend does not.
(b) One person is older than another.
(c) Reeta eats meat, but her sister Geeta is a vegetarian.
(d) Two children have diwerent eye colours.
(d) Two children have diwerent eye colours.
Q 36 – Analogous organs have
(a) Same structure, same function
(b) Different structure, different function
(c) Same structure, different function
(d) Same function, different structure
(d) Same function, different structure
Q 37 – The more characteristics two species have in common :
(a) More closely they are related and more recently they had a common ancestors.
(b) More distantly they are related and more recently they have common ancestors.
(c) More closely they are related and more distantly they have common ancestors.
(d) More distantly they are related and more distantly they have common ancestors.
(a) More closely they are related and more recently they had a common ancestors.
Q 38 – The theory of chemical evolution of life was experimentally demonstrated by-
(a) Oparin
(b) Miller and Urey
(c) Mendel
(d) Darwin
(b) Miller and Urey
Q 39 – To study the natural phenomenon of inheritance, Mendel selected the pea plants. Which of the following properties were suitable for their studies?
(i) Plants would easily self pollinate or cross-pollinate in nature.
(ii) Plants were easily grown in garden soil with a considerably shorter generation time.
(iii) Pea plants do not require the true-breeding for hybridisation experiments.
(iv) Many parts of the plant such as pod, seed, flower, cotyledons showed distinct phenotypes.
(a) (i), (ii) and (iii).
(b) (ii) and (iv).
(c) (i) and (ii).
(d) (ii), (iii) and (iv).
(b) (ii) and (iv).
Q 40 – What is the difference between genetic drift and change due to natural selection?
(a) Genetic drift does not require the presence of variation.
(b) Genetic drift never occurs in nature, natural selection does.
(c) Genetic drift does not involve competition between members of a species.
(d) There is no difference.
(c) Genetic drift does not involve competition between members of a species.
Q 41 – Fossils helps
(a) To study evolution
(b) To understand climatic conditions in past
(c) For a hierarchy of organisms (classification)
(d) They help in all the above
(d) They help in all the above
Q 42 – What is the difference between genetic drift and change due to natural selection?
(a) Genetic drift does not require the presence of variation.
(b) Genetic drift never occurs in nature, natural selection does.
(c) Genetic drift does not involve competition between members of a species.
(d) There is no difference
(c) Genetic drift does not involve competition between members of a species.
Q 43 – The fossil remains of Archaeopteryx is a connecting link between
(a) reptiles and mammals
(b) reptiles and bird
(c) fish and amphibian
(d) amphibian and reptile
(b) reptiles and bird
Q 44 – Which one of the following strongly indicates that bird and dinosaurs are closely related?
(a) They both have feathers
(b) They both respire
(c) They both reproduce
(d) They both have eyes
(a) They both have feathers
Q 45 – Which concept was not included in Charles Darwin’s theory of Natural Selection?
(a) Struggle for existence
(b) Punctuated equilibrium
(c) Survival of the fittest
(d) Overproduction of offspring.
(b) Punctuated equilibrium
Q 46 – Which concept was not included in Charles Darwin’s theory of Natural Selection?
(a) Struggle for existence
(b) Punctuated equilibrium
(c) Survival of the fittest
(d) Overproduction of offspring
(b) Punctuated equilibrium
Q 47 – Wild cabbage is being cultivated for thousands of years and humans have generated broccoli, cauliflower, kala etc. from it. This is an example of
(a) Natural selection
(b) Genetic drift
(c) Geographic isolation
(d) Artificial selection
(d) Artificial selection
Q 48 – Natural selection is called ‘survival of the fittest’. Which of the following statements best describes an organism?
(a) How strong it is compared to other individuals of the same species.
(b) How much food and resources it is able to gather for its offspring.
(c) The ability to adapt to the environment in the niche it occupies.
(d) The number of fertile offspring it has.
(c) The ability to adapt to the environment in the niche it occupies.
Q 49 – A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as
(a) TTWW
(b) TTww
(c) TtWW
(d) TtWw
(c) TtWW
Q 50 – Human offspring’s sex is determined
(а) through father’s sex chromosomes.
(b) through mother’s sex chromosomes.
(c) by hormones.
(d) by enzymes.
(а) through father’s sex chromosomes.
Q 51. Human offspring’s sex is determined
(а) through father’s sex chromosomes.
(b) through mother’s sex chromosomes.
(c) by hormones.
(d) by enzymes.
(а) through father’s sex chromosomes.
Q 52. The fossil remains of Archaeopteryx is a connecting link between
(a) reptiles and mammals
(b) reptiles and bird
(c) fish and amphibian
(d) amphibian and reptile
(b) reptiles and bird
Q 53. Human teeth and elephant’s tusk are
(a) Analogous organs
(b) Vestigeal organs
(c) Homologous organs
(d) Rudimentary organs
(c) Homologous organs
Q 54. The maleness of a child is determined by
(a) the X chromosome in the zygote
(b) the Y chromosome in zygote
(c) the cytoplasm of germ cell which determines the sex
(d) sex is determined by chance
(b) the Y chromosome in zygote
Q 55. Q 70. Miller synthesized simple amino-acid from:
(a) methane, ammonia, oxygen, nitrogen
(b) hydrogen, methane, ammonia, water
(c) ammonia, methane, water, carbon-di-oxide
(d) hydrogen, oxygen, water, nitrogen
(b) hydrogen, methane, ammonia, water
Q 56. Which of these is not a vestigial organ in human beings?
(a) Appendix
(b) Wisdom tooth
(c) Nictitating membrane
(d) Gall bladder
(d) Gall bladder
Q 57. The modern day Human species has evolved from its earliest ancestors who lived in:
(a) Asia
(b) Australia
(c) Africa
(d) China
(c) Africa
Q 58. In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are
(i) large chromosome
(ii) small chromosome
(iii) Y-chromosome
(iv) X-chromosome
(a) (i) and (ii)
(b) (iii) only
(c) (iii) and (iv)
(d) (ii) and (iv)
(c) (iii) and (iv)
Q 59. Select the statements that describe characteristics of genes
(i) genes are specific sequence of bases in a DNA molecule
(ii) a gene does not code for proteins
(iii) in individuals of a given species, a specific gene is located on a particular chromosome
(iv) each chromosome has only one gene
(a) (i) and (ii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)
(b) (i) and (iii)
Q 60. Which one is the nearest member of human in evolutionary history?
(a) Monkey
(b) Bat
(c) Rabbit
(d) Chimpanzee
(d) Chimpanzee