JAC Zoology Class XII Model Question Paper : Jharkhand Academic Council

Name of the board : Jharkhand Academic Council
Subject : Class XII Zoology
Website : jac.nic.in/model_questions.htm
Document type : Model Question Paper

Zoology Set I : https://www.pdfquestion.in/uploads/48-Zoology%20Set%20III.pdf
Zoology Set II : https://www.pdfquestion.in/uploads/48-Zoology%20Set-I.pdf
Zoology Set III : https://www.pdfquestion.in/uploads/48-Zoology%20Set-II.pdf

JAC Class XII Zoology Model Question Paper

Total Marks 35
Time 1½ hrs
Total number of questions – 18

Related : Jharkhand Academic Council Botany Class XII  Question Paper Model : www.pdfquestion.in/39.html

Section – A

Question 1 -10 of one marks each. Objective type question (Multiple choice – at least four choices)
1. Uracil is present in
a) DNA
b) Protein
c) RNA
d) Sugar
Ans. (c) RNA

2. Law of use and disuse of organs was given by
a) Mendel
b) Darwin
c) De Varies
d) Lamarck
Ans. (d) Lamarck

3. The chromosomal type of sex determination in human being is
a) XX XO
b) XX XY
c) ZW ZZ
d) ZO ZZ

4. Which of the following blood group in human beings were discovered by Landsteiner
a) A,B, AB and O system
b) Rh factor
c) Kell factor
d) Bombay factor

5. After ovulation the structure formed by rupture of graffian follicle is known as
a) Corpus luteum
b) Corpus albicans
c) Corpus callosum
d) Placenta

6. Which of the following disease is diagnosed by WIDAL Test
a) Malaria
b) Typhoid
c) Filariasis
d) Ascariasis

7. Flow of energy in an ecosystem is
a) Unidirectional
b) Multidirectional
c) Bidirectional
d) Without direction

8. Which among the following is the State animal of Jharkhand
a) Cow
b) Tiger
c) Elephant
d) Lion

9. Which is the most polluted river of Jharkhand
a) Damodar river
b) Swarnrekha river
c) Koel river
d) Karo river

10. Which of the following antibody is found in abundance in Colostrum (Mother milk)
a) IgG
b) IgM
c) IgE
d) IgA

Section – B

Questions 11 to 13 are of two marks each

11. DNA is a ___________material came from the experiment of _______________ & _____________ (Hershey , Genetic, Chase)
Ans. Genetic, Hershey, Chase

12. Name any three fossil fuels you have studied.
Ans. Petroleum products, natural gas and coal
Or
Name the element from which nuclear energy is obtained commercially in our country. Name the place in Jharkhand where the mining is carried for this element.
Ans. Uranium /Jadugorda in Purbi Singhbhum district of Jharkahnd (Uranium Corporation India Ltd.).

13. Give two examples of connecting link.
Ans. Example of connecting links –
(i) Echidna is an egg laying mammal and is connecting link between reptile and mammals.
(ii) Archeopteryx lithographica is a fossil bird which is connecting link between reptile and birds.

14. (a) Define male heterogamety (1+2 = 3 marks )
(b) How is sex determined in human being?
Ans. (a) In XX XY chromosomal sex determination pattern male is XY and produces two different types of gamete – one gamete with X chromosome and other with Y chromosome. This is known as male heterogamety.
(b) In human beings XX XY type of chromosomal sex determination pattern exists.

15. Write the function of –
a) Prostate gland
b) Corpus luteum
c) Mammary gland
Ans. (a) Secretions constitute the seminal plasma that contains fructose, calcium and enzymes which facilitates the sperm in fertilization.
(b) Corpus luteum secretes large amount of progesterone, which is essential for maintenance of endomatrium.
(c) Mammary gland is the characteristic feature of mammals and secretes milk for the young ones.

Section – C

Questions 17 to 18 are of five marks each
17. Label A, B, C, D & E in the diagram given below
Ans. A – Acrosome
B – Nucleus
C – Neck
D – Middle piece
E – Mitochondria
Or
Write the following: (1+2+2 = 5)
(a) List the various abiotic environmental factors
(b) Pioneer species
(c) Climax community

Ans. a) Light, Temperature, Water, Soil
(b) the species that invade a bare area is known as pioneer species
(c) Composition and structure of all communities constantly change in response to the changing environment. This changes leads finally to a community that is near equilibrium with the environment. This is called climax community.

18. (a) Mention the three observations on which Darwin based his theory of Natural Selection?
(b) Describe natural selection in Darwin finches.
Ans. (a) Struggle for existence, Survival of the fittest, Natural selection
(b) Shape of the beaks of the Darwin finches changes according to the seeds availability in the area (Galapagos Island). It is a good example of divergent evolution and natural selection shown in finches for their survival in diversified habitat.