Directions: Each question consists of four lettered headings A, B, C, D. Select the heading which is closely related to the description which follows.

Here are the answers to the questions:

31. The cerebellum is responsible for coordinating muscular movement and maintaining body balance.

• The correct option is B.

32. The mitochondrion is known as the powerhouse of the cell and is the primary site of cellular respiration in eukaryotic cells.

• The correct option is A.

33. Osmosis is specifically defined as the movement of water across a partially permeable membrane from a region of high water potential to a region of low water potential.

• The correct option is B.

34. The pulmonary vein carries oxygenated blood from the lungs back to the heart.

• The correct option is B.

35. Amylase is the enzyme found in saliva that begins the digestion of starch into maltose.

• The correct option is A.

36. A deficiency of Vitamin C in humans causes scurvy.

• The correct option is B.

37. A community refers to all the populations of different species living together in the same habitat.

• The correct option is C.

38. Eutrophication is the process where excessive nutrient enrichment of a water body leads to algal blooms and subsequent oxygen depletion.

• The correct option is C.

39. A plant cell that has lost so much water that its cell membrane pulls away from the cell wall is described as plasmolysed.

• The correct option is C.

40. The pancreas is a gland that produces both digestive enzymes (like amylase, lipase, and trypsin) and hormones such as insulin and glucagon.

• The correct option is B.