Rajasthan Board Senior Secondary Examination 2010 – Biology Paper II

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1. (i) In a human blood when both antigens A and B are present, but there are no antibodies, his blood group is

(A) O                                                 (B) A
(C) B                                                  (D) AB.      1/2

(ii) Which of the following functions will be affected, if the semicircular canals stop functioning ?

(A) Respiration                            (B) Balance of body
(C) Hearing                                    (D) Absorption of food. 1/2

(iii) How many ova and polar bodies will be formed from one primary Oocyte in the process of Oogenesis ?

(A) Two ova and two polar bodies
(B) Three ova and one polar body
(C) One ovum and three polar bodies
(D) Four ova and one polar body. 1/2

(iv)What will be the progeny when a heterozygous tall plant is crossed with dwarf plant ?

(A) 100% tall
(B) 100% dwarf
(C) 75% tall and 25% dwarf
(D) 50% tall and 50% dwarf. 1/2

2. What is os-innominatum ? 1/2

3. What is haematuria disease ? 1/2

4. Define Spermiogenesis. 1/2

5. What will be the arrangement of sex chromosomes in human, suffering from criminal syndrome ? 1/2

6. Where and in which form is excess of glucose stored in human body ?1/2+ 1/2= 1

7. Define oxygenation. 1

8. What is binocular vision ? Give one example. 1/2+ 1/2= 1

9. Why is adrenal medulla called 3F gland ? 1

10. Explain ‘albinism’. 1

11. Write the scientific names of the smallest and the largest genes.1/2+ 1/2= 1

12.MRI technique is based on which principle ? Write one of its characteristics. 1/2+ 1/2= 1

13. What is spinning ? 1

14. Explain the regulation of heart rate by the nervous system. 2

15. Which functions will be affected on the destruction of chorionic epithelium of placenta ? Explain with reason. 1 + 1 = 2

16.Explain Luteal phase in the Menstrual cycle. 2

17. Differentiate between neoteny and paedogenesis. Give an example of each. 1 + 1 = 2

18. If the golgi body of spermatid is destroyed, which function will be affected ? Explain with reason. 1/2+ 1 1/2= 2

19. Differentiate between nuclear transplantation technique and Honolulu technique in the process of reproductive cloning. 2

20. Western blot test is done for the diagnosis of which disease ? Write the scientific name of the pathogen and four symptoms of this disease. 1/2+ 1/2+ 1 = 2

21. Write the scientific names of honeybees having the following characteristics : 1/2 + 1/2+ 1/2+ 1/2= 2

(i) Smaller in size and timid in nature
(ii) Largest in size and produces highest yield of honey
(iii) Small in size and mild in nature
(iv) Most useful for commercial purpose.

22. Define sex-linked inheritance. Write its four characteristics. Explain protenor type of sex determination with suitable example and draw its ray diagram. 1 + 1 + 1 + 1 = 4

23. Draw a labelled diagram of digestive system of human. Explain the mechanism of digestion in duodenum and small intestine. 1 + 2 + 1 = 4

OR

Draw a labelled diagram of Synovial joint. Explain its structure and two subtypes by giving example. 1 + 2 + 1 = 4

24. Draw a labelled diagram of human brain. Explain the functions of its various parts. 1 + 3 = 4

OR

What is nephron ? Draw a labelled diagram and explain its structure. 1 + 1 + 2 = 4