Assignment_ch16
01. What is the process of inheritance of character in living beings called ?
(A) Migration
(B) Variation
(C) Evolution
(D) Heredity
02. Individual variation means …..
(A) similarity
(B) Evolution
(C) Heredity
(D) Variation
03. Which of the following is responsible for variation ?
(A) Centromere
(B) Mitochondrion
(C) Gene
(D) Retrovirus
04. By what name is the branch of biology related with study of heredity
and variation known ?
(A) Genetics
(B) Life science
(C) Taxonomy
(D) Evolution
05. The occurrence of difference among the individuals of the same species
are due to …..
(A) Development
(B) Variations
(C) Transition
(D) Evolution
06. The continuity of features from one generation to another is known as
…..
(A) Mutation
(B) Heredity
(C) Evolution
(D) Generation
07. Which factors conduct the expressive genetic information from one
generation to another ?
(A) RNA
(B) DNA
(C) Protein
(D) Enzyme
08. What is the studied in the science of genetics ?
(A) Transmission of character from one generation to another.
(B)
Hybridization between organisms.
(C) Formation of new species
(speciation).
(D) The organisms of the past dugout from the earth crust.
09. The characteristic that develops as a response to environment …..
(A) Is hereditary characteristic
(B) Is not hereditary
(C) Is important
for evolution
(D) Descends in the offsprings
10. Which scientist was first to conduct systematic experiments for the
study of heredity ?
(A) Sutton
(B) Mendel
(C) Khorana
(D) Watson
11. On which of the following plant species Mendel has worked ?
(A) Phaseolus mungo
(B) Zea mays
(C) Cassia tora
(D) Pisum
sativum
12. When Mendel crossed tall plant with a dwarf plant, was the ratio of
dwarf plants in F2 generation ?
(A) 40%
(B) 75%
(C) 60%
(D) 25%
13. Which scientist conducted experiments on pea plants for research work
about heredity ?
(A) Mendel
(B) Sutton
(C) Boveri
(D) Morgan
14. crossed (hybridized) in F1 generation …..
(A) Tall and dwarf plants obtained in the ration 1 : 1.
(B) All plants
obtained are dwarf.
(C) Tall and dwarf plants obtained in the ration 3 : 1.
(D) All plants obtained are tall.
15. Hybridazation experiment performed by Mendel between a tall (TT) plant
of pisum sativum and a dwarf (tt) plant of pisum sativum gave the following
result in F2 generation …..
(A) All plants are tall.
(B) Tall plants and dwarf plants in the ratio 3 : 1.
(C) Tall and dwarf plants obtained in the ration 2 : 1.
(D) Tall plants and
dwarf plants in the ratio 1 : 1.
16. The expression of tallness in the pea plant is exhibited by what ?
(A) tt
(B) tt
(C) A or B
(D) Tt
17. As a result of hybridization between the tall pea plant and dwarf pea
plant, all the plants produced in F1 are tall, because …..
(A) The expression of tallness is recessive
(B) The expression of dwarfness
is dominant.
(C) The tall plant or a dwarf plant is a natural phenomenon.
(D) The expression of tallness is dominant.
18. What did Mendel do in the experiments on pea plant to obtain offsprings
of F2 generation ?
(A) The tall plant or a dwarf plant is a natural phenomenon.
(B) Selfpollination (self-fertilization) in F1 generation.
(C) Cross fertilization in
any one ent plant.
(D) Cross fertilization in F1 plants.
19. In the result of Mendel's experiment on the inheritance of two
characters, the ratio of the plants showing yellow and wrinkled seed and of
the plants showing green and round seeds in F2 generation …..
(A) 9 : 3
(B) 3 : 1
(C) 9 : 1
(D) 3 : 3
20. New species may be formed if :
(1) DNA undergoes significant changed in germ cells.
(2) There is no change in the genetic material.
(3) Mating does not take place.
(A) (1), (2) and (3)
(B) (1) and (3)
(C) (1) and (2)
(D) (2) and (3)
21. A small can change its sex. What does it indicate ?
(A) Some of the chromosomes in its zygote differentiate into Y-chromosomes.
(B) It is bisexual.
(C) The sex determination therein is not a genetic
phenomenon.
(D) It is sterile.
22. What is similar in male and female sex chromosomes ?
(A) XX-chromosome
(B) X-chromosome
(C) XY- chromosome
(D) Y-
chromosome
23. Which type of chromosomes are found in each somatic cell of a woman ?
(A) A + X
(B) 2A +XY
(C) A + Y
(D) 2A + XX
24. In human being sex is determined by …..
(A) Genes
(B) Organelles
(C) Tissues
(D) Cell
25. In human, what is the chromosomal complex of a sperm that gives to a
male child through fertilization ?
(A) (2A + XY)
(B) (A + O)
(C) (A + X)
(D) (A + Y)
26. When does the sex determination occur in human being ?
(A) When the embryo implantation occurs.
(B) When sexual coitus takes
place.
(C) When the gonad gets differentiated.
(D) When the
fertilization occurs.
27. How many pairs of chromosomes are there in human cell ?
(A) 23 pairs
(B) 2 pairs
(C) 22 pairs
(D) 4 pairs
28. In male and female (humans), how many pairs of chromosomes are
equal ?
(A) 22 pairs
(B) 2 pairs
(C) 4 pairs
(D) 23 pairs
29. The chromosomes in each of the somatic cell in a woman are …..
(A) A + X
(B) 2A + XY
(C) 2A + X
(D) 2A + XX
30. What is the chromosomes complex of the sperm that participates in the
process of fertilization wherein the zygote develops into a male child ?
(A) 2A + XY
(B) A + O
(C) A + Y
(D) A + X
31. How many types of sperms are found in man ?
(A) Two
(B) Three
(C) Four
(D) One
32. The Y- chromosome in human male …..
(A) Is of double the size than that of X- chromosome.
(B) Possesses the
same size at than of X- chromosome.
(C) Is smaller in size than of Xchromosome.
(D) Is larger in size than that of X- chromosome.
33. How many pairs of sex chromosomes are found in the somatic cells of
the human being ?
(A) Four
(B) Three
(C) One
(D) Two
34. How many sex chromosomes are found in the reproductive cells
(gametes) of human being ?
(A) 23
(B) 1
(C) 2
(D) 46
35. The probability of birth a son daughter is …..
(A) 1 : 2
(B) 1 : 1
(C) 2 : 1
(D) 3 : 1
36. For the differentiation of testes in the undifferentiated gonads in the
human being. The presence of what is essential ?
(A) Y- chromosome
(B) Autosomes
(C) X- chromosome
(D) Both B
and C
37. From which Latin word is the word evolution derived ?
(A) Evolutionary
(B) Evolver
(C) Evolve
(D) Evolution
38. Which is the befitting statement for the acquired characteristic ?
(A) It comes into existence due to change in DNA.
(B) It develops as a
response to the environment.
(C) The organisms are born with these
environment.
(D) It is transmitted in the offspring through the parental
gametes.
39. Which of the following is not an acquired characteristic ?
(A) To have attached earlobe (of the pinna).
(B) To have a scar of wound
on the human face.
(C) To role on the skating ring with the skate on.
(D) To learn swimming by man.
40. With whom are the genetical footprints of human beings related ?
(A) American origin
(B) African origin
(C) Asian origin
(D)
Australian origin
41. Which fossil(s) is / are determined by carbon dating method ?
(A) All the given
(B) Trilobite
(C) Dinosaur
(D) Ammonite
42. Which is the important factor for the formation of new species ?
(A) Geographical isolation of population.
(B) Variations.
(C) All the
given.
(D) Genetic drift.
43. The human species have genetic roots in …..
(A) Africa
(B) America
(C) India
(D) Australia
44. The organs which perform different functions but have the same basic
structure are known as …..
(A) Hemolytic organs
(B) Analytic organs
(C) Analogous organs
(D)
Homologous organs
45. If the fossil of an organism is found in the deeper layer of earth, then we
can predict that …..
(A) The extinction of organism has occurred thousand of years ago.
(B)
The fossil position in the layers of earth is not related to its time of
extinction.
(C) The extinction of organism has occurred recently.
(D)
Time of extinction cannot be determined.
46. Which organ of fish is homologous with the hand of human being ?
(A) Fin
(B) Gills
(C) Lungs
(D) Appendages
47. He presence of which of the following types of organs in two animals
indicates that they are not derived from a common ancestor ?
(A) Homologous organs
(B) Reproductive organs
(C) Analogous organs
(D) Excretory organs
48. Which one the following is not homologous.
(A) Forelimbs in humans and lizard
(B) Wings in bat and bird
Forelimbs in lizard and frog
(D) Wings in butterfly and bat
(C)
49. Which of the following organs, with found to be present in two animals,
indicate that these two animals have been evolved from a common ancestor
?
(A) Reproductive organs.
(B) Excretory organs.
(C) Analogous organs.
(D) Homologous organs.
50. What are the organs of the extinct animals of the past met with from the
earth strata during excavation, known ?
(A) Homologous organs
(B) Analogous organs
(C) Structurally similar
organs
(D) Fossils
51. Which radioactive element (isotope) is used to determine the age of
fossils ?
(A) 16O
(B) 18O
(C) 14C
(D) 12C
52. In which animal did the eyes originate first ?
(A) Planaria
(B) Paramoecium
(C) Plasmodium
(D) Peripatus
53. Which type of animals were the dinosaurs having feathers ?
(A) Aves
(B) Both A and B
(C) Reptilia
(D) Mammalia
54. Which plant was obtained, from the sterile flowers of cabbage, by using
the artificial selection technique ?
(A) Kale
(B) Broccoli
(C) Cauliflower
(D) Kohlrabi
55. Where is the origin of Homo sapiens ?
(A) Eurasia
(B) Africa
(C) Philippines
(D) Indonesia
Answers:
01 : A B C
C D 

04 : A B C
C D 

07 : A B C
C D 

10 : A B C
C D 

13 : A B C
C D 

16 : A B C
C D 

19 : A B C
C D 

22 : A B C
C D 

25 : A B C
C D 

28 : A B C
C D 

31 : A B C
C D 

34 : A B C
C D 

37 : A B C
C D 

40 : A B C
C D 

43 : A B C
C D 

46 : A B C
C D 

D  02 : A B C D  03 : A B
D  05 : A B C D  06 : A B
D  08 : A B C D  09 : A B
D  11 : A B C D  12 : A B
D  14 : A B C D  15 : A B
D  17 : A B C D  18 : A B
D  20 : A B C D  21 : A B
D  23 : A B C D  24 : A B
D  26 : A B C D  27 : A B
D  29 : A B C D  30 : A B
D  32 : A B C D  33 : A B
D  35 : A B C D  36 : A B
D  38 : A B C D  39 : A B
D  41 : A B C D  42 : A B
D  44 : A B C D  45 : A B
D  47 : A B C D  48 : A B
49 : A B C D  50 : A B C D  51 : A B
C D 

52 : A B C D  53 : A B C D  54 : A B
C D 

55 : A B C D  