Question 1 : Which of the following is totally impossible outcome of Mendel's Experiment?3 tall 1 short plant
24 tall and 8 short plants
8 tall and 0 short plants
4 tall plants and 1 medium height plant.
Question 2 : Which of the following is not a direct conclusion that can be drawn from Mendel's Experiment?Only one parental trait is expressed
For recessive trait to be expressed, both copies should be identical
Natural selection can alter frequency of an inherited trait.
Two copies of each trait is inherited in sexually reproducing organism
Question 3 : Which one is a possible progeny in F2 generation of pure bred tall plant with round seed and short plant with wrinkled seeds?Tall plant with round seeds
Tall plant with wrinkled seeds
Short plant with round seed
All of the above
Question 4 : Which section of DNA provides information for one proteinNucleus
Question 5 : Which of the following is not controlled by genes? 1. Weight of a person 2. Height of a persononly 1
both 1 and 2
sometimes 1 and sometimes 2
Question 6 : What is the probability that the male progeny will be a boy?50%
Question 7 : Who have a perfect pair of sex chromosomes?Girls only
Both girls and boys
It depends on many other factors
Question 8 : With whom you can associate theory of evolution?Charles Darwin
Question 9 : Which of the following can be called a characteristic?Plants can photosynthesis
We have 2 eyes
Mango tree is multicellular
All of these
Question 10 : Homologous organ haveSame structure, same function
Different structure, different function
Same structure, different function
different structure, same function
Question 11 : Process of selecting individuals with desired characters by man is calledHybridization
Question 12 : Which one of the following pairs are homologous organs?Forelimbs of a bird and wings of a bat.
Wings of a bird and wings of a butterfly.
Pectoral fins of a fish and forelimbs of a horse.
Wings of a bat and wings of a cockroach.
Question 13 : The theory of evolution of species by natural selection was given byMendel
Question 14 : A cross between a tall pea-plant (TT) and a short pea-plant (tt) resulted in progenies that were all tall plants becausetallness is the recessive trait.
shortness is the dominant trait.
height of pea-plant is not governed by gene T or t.
tallness is the dominant trait.
Question 15 : The number of pairs of sex chromosomes in the zygote of a human being is2
Question 16 : A zygote which has an X-chromosome inherited from the father will develop into aGirl
either boy or girl
X-chromosome does not influence the sex of a child.
Question 17 : A man with blood group A marries a woman having blood group O. What will be the blood group of the child?O Only
Equal chance of acquiring blood group A or blood group O.
Question 18 : What does the progeny of a tall plant with round seeds and a short plant with wrinkled seeds look like?All are tall with round seeds.
All are short with round seeds.
All are tall with wrinkled seeds.
All are short with wrinkled seeds.
Question 19 : If a round, green seeded pea-plant (RRyy) is crossed with a wrinkled yellow seeded pea- plant (rrYY), the seeds produced in F1 generation areround and green
round and yellow
wrinkled and green
wrinkled and yellow
Question 20 : The human species has genetic roots inAustralia
Question 21 : Which of the following is the ancestor of ‘Broccoli’?Cabbage
Question 22 : The process of evolution of a species whereby characteristics which help individual organisms to survive and reproduce are passed on to their offspring and those characteristics which do not help are not passed on is calledArtificial selection
Question 23 : Identify the two organisms which are now extinct and are studied from their fossils.white tiger and sparrow
dinosaur and fish (Knightia)
ammonite and white tiger
trilobite and white tiger
Question 24 : Which of the following decides the sex of the child?male gamete, i.e., sperm
female gamete, i.e., ovum
both sperm and ovum
Question 25 : Pure-bred pea plant A is crossed with pure¬bred pea plant B. It is found that the plants which look like A do not appear in Fj gene¬ration but re-emerge in F2 generation. Which of the plants A and B are tall and dwarf?A are tall and B are dwarf.
A are tall and B are also tall.
A are dwarf and B are also dwarf
A are dwarf and B are tall
Question 26 : In humans if gene B gives brown eyes and gene b gives blue eyes, what will be the colour of eyes of the persons having combinations (i) Bb and (ii) BB?(i) Blue and (ii) Brown
(i) Blue and (ii) Brown
(i) Brown and (ii) Brown
(i) Blue and (ii) Blue
Question 27 : 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 aMonohybrid cross
Question 28 : Which of the following characters can be acquired but not inherited?Colour of skin
Size of body
Colour of eyes
Texture of hair
Question 29 : Those organs which have the same basic structure but different functions are calledVestigial organs
None of these
Question 30 : Those organs which have different basic structure but have similar appearance and perform similar functions are calledAnalogous organs
None of these
Question 31 : The remaps (or impressions) of dead animals or plant? that lived in the remote past are known asextinct species
naturally selected species
none of the above
Question 32 : The process by which new species develop from the existing species is known asEvolution
Question 33 : Which of the following is an example of genetic variation?One person has a scar, but his friend does not.
One person is older than another.
Reeta eats meat, but her sister Geeta is a vegetarian.
Two children have different eye colours.
Question 34 : Differences between organisms in a species are described as variation. Which of the following would you describe as continuous variation?Hair colour
Question 35 : The more characteristics two species have in common :More closely they are related and more recently they had a common ancestors.
More distantly they are related and more recently they have common ancestors.
More closely they are related and more distantly they have common ancestors.
More distantly they are related and more distantly they have common ancestors.
Question 36 : 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.(i), (ii) and (iii).
(ii) and (iv).
(i) and (ii).
(ii), (iii) and (iv).
Question 37 : What is the difference between genetic drift and change due to natural selection?Genetic drift does not require the presence of variation.
Genetic drift never occurs in nature, natural selection does.
Genetic drift does not involve competition between members of a species.
There is no difference.
Question 38 : Which concept was not included in Charles Darwins theory of Natural Selection?Struggle for existence
Survival of the fittest
Overproduction of offspring.
Question 39 : Natural selection is called survival of the fittest. Which of the following statements best describes an organism?How strong it is compared to other individuals of the same species.
How much food and resources it is able to gather for its offspring.
The ability to adapt to the environment in the niche it occupies.
The number of fertiie offspring it has.
Question 40 : Human offsprings sex is determinedthrough father’s sex chromosomes.
through mother’s sex chromosomes.
Question 41 : Wild cabbage has evolved into new varieties like cabbage, broccoli and cauliflower bygenetic drift
Question 42 : The fossil remains of Archaeopteryx is a connecting link betweenreptiles and mammals
reptiles and bird
fish and amphibian
amphibian and reptile
Question 43 : The maleness of a child is determined bythe X chromosome in the zygote
the Y chromosome in zygote
the cytoplasm of germ cell which determines the sex
sex is determined by chance
Question 44 : 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 thatreptiles have evolved from birds
there is no evolutionary connection between reptiles and birds
feathers are homologous structures in both the organisms
birds have evolved from reptiles.
Question 45 : Normal cell of human body contains 46 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be:60
Question 46 : In the human blood grouping, the four basic blood types are type A, type B, type AB, and type O. They are:Simple dominant and recessive traits
Question 47 : A pregnant woman has an equal chance of her baby being blood group A or blood group AB. Which one of the following shows the possible genotypes of the woman and the father of her child?IA IA and IB IO
IA IB and IB IO
IA IO and IB IO
IO IB and IA IO
Question 48 : What will be the number of chromosomes present in each gamete produced by the plants if the palisade cells of a species of plant contain 28 chromosomes in all?56
Question 49 : Which is the one characteristic of the parents that can be inherited by their children?Deep scar on chin
Technique of swimming
Question 50 : What is the ancient name for all human beings?Monkey
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