objective-biology- part -B,Class -X

 PART-B

Instructions:

1.         Answer all the questions.

2. Each question carries ½ marks.

 3. For questions 1 to 10, the answers are given under capital letter A, B, C & D the capital letter that indicates the correct answer is to be written in the  brackets provided

4. Correction & over writing will be discredited.

 

I.          Pick up the correct answer and fill in the brackets with the capital letter of the correct answer chosen.

1. Lymph is a part of

A] Digestive system      B] Excretory system              C] Nervous system      D] Transport system              (        )

2. Vitamin K is soluble in

A] Alcohol                         B] Water                                       C] Fat                                 D] Acid                                                     (                 )

3. In which precise area does meiosis take place

A] Stamen                                B] Anther                                C] Pollen mother cell       D] Pollen grain             (                 )

4. Operculum occurs in

A] Bony fishes                      B] Frog                                          C] Cockroach                         D] Cartilagenous fishes      (                 )

5. Smallest of all white blood corpuscles is

A] Erythrocytes                       B] Lymphocytes          C] Monocytes                         D] Eosinophils             (                 )

6. Conversion of Glucose into pyruvic acid yields a net gain of

A] 2 molecules of ATP B] 36 molecules of ATP C] 4 molecules of ATP D] 38 molecules of ATP (       )

7. The disease caused due to the contamination of food in cattle in British is

A] Mad-Cow          B] Cholera              C] Small pox                        D] Diarrhoea                           (        )

8. The length of trachea in man is

A] 11 cm             B] 15 cm                   C] 7 cm                                 D] 3 cm                                                (               )

9. Which cells are destroyed in AIDS

A] Monocytes     B] Lymphocytes     C] Neutrophils                       D] RBC                                               (        )

10. The important anion of the body is

A] Potassium         B] Bromide              C] Chloride                           D] Calcium                                           (                 )

 

II.  Fill in the Blanks

11. Number of spinal nerves in man is _________ pairs.
12. Buds in Bryophyllum are known as ________________ buds.
13. A German called __________________ was the originator of first aid.
14. The human brain has _____________ sense to appreciate poetry.
15. The instrument used for determining BMR is called as _______________.
16. Cell division in vascular cambium is promoted by _________________.
17. The example of active transport in living organisms is ______________.
18. ______________________ won noble prize for his work on Photosynthesis.
19. During the implantation, embryo gets attached to the wall of ______________.
20. ______________ prevents the blood from clotting in the blood vessels.

 

III.              Match the following each questions carries ½ marks.

21. Deficiency of iodine                                   (        )                          A. Cockroach

22. Alary muscles                                (          )                   B. Gills

23. Erythrocytes                                  (         )                   C. Simple goiter

24. Mumps                                          (         )                    D. White blood cells

25. Tadpole larva of frog                     (        )                    E. Red blood cells.

                                                                                           F. Myxovirus parotiditis

                                                                                                                                                                        G. Paramyxovirus

 

26. Xerophthalmia                             (          )                     A. Conjugation.

27. Blood                                           (          )                     B. Nissil granules

28. Vasopressin                                 (          )                     C. Deficiency of 'A' Vitamin

29. Cyton                                           (         )                      D. Hormone

30. Paramoecium                               (         )                      E. Fluid tissue

                                                                                            F. Enzyme

                                                                                            G. Sperm