One Paper MCQs Solved Preparation Material All in One for PPSC FPSC NTS PTS OTS

42. The shape of the external ear is due to:
a. Elastic cartilage
b. Fibrocartilage
c. Articular cartilage
d. none
43. The external surface of the stomach is covered by
a. Mucosa
b. Serosa
c. Parietal peritoneum
d. none
44. Which of the following is not a human organ system?
a. Integumentary
b. Muscular
c. Epithelical
d. none
45. Which of the following does not vary predictably with the depth of the aquatic environment?
a. Salinity
b. Temperature
c. Penetration by sunlight
d. none
46. The quantity of available nutrients ………….from the lower levels of the energy pyramids to the higher ones.
a. Increases
b. decreases
c. remains stable
d. none
47. Which of the following is not a major sub division of the biosphere?
a. Hydrosphere
b. Stratosphere
c. Lithosphere
d. none