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31. Annual rainfall in grassland is about_____________?

A. More than 2500 mm
B. 750-1500 mm
C. 250-750 mm
D. Less than 250 mm

32. Conversion of ammonia or ammonium ion into nitrites during nitrogen cycle occurs due_____________?

A. Rhizobium
B. Nitrosomonas
C. Nitrobacter
D. Pseudomonas

33. Cellulose is the major component of__________?

A. Primary wall
B. Secondary wall
C. Middle lamella
D. all of the above

34. Humming bird is an example of________________?

A. Cold blooded animal
B. Ectotherm
C. Endotherm
D. Heterotherm

35. Number of cervical vertebrae is_____________?

A. 5
B. 7
C. 9
D. 12

36. Autophagosomes are____________?

A. Those lysosomes which eat parts of their own cells to generate energy.
B. Those lysosomes which eat old and worn out cellular organelles.
C. Lysosomes which help in extracellular digestion
D. Both a and b

37. Sapwood is formed from_____________?

A. Primary xylem
B. Secondary xylem
C. Primary phloem
D. Secondary phloem

38. Which of the following cytoskeletal fiber contain tubulin protein?

A. One which help in assembly of spindles during mitosis.
B. One involved in internal cell motion.
C. One involved in maintenance of cell shape.
D. Both b and c

39. Only myosine is present in_____________?

A. A band
B. 1 band
C. H zone
D. Sarcomere

40. Joints present in skull are example of_______________?

A. Fibrous joints
B. Cartilaginous joints
C. Synovial Joints
D. Slightly moveable joints