What are the definitions of cell, tissue, organ, and system?

34. The part of the brain that controls thinking is the cerebrum.
The correct option is C.

$$\boxed{\text{C. Cerebrum}}$$

35. No question provided for this number.

36. Animals that eat flesh are carnivores.
The correct option is B.

$$\boxed{\text{B. Carnivores}}$$

37. Platelets are the blood component that helps in clotting.
The correct option is B.

$$\boxed{\text{B. Platelets}}$$

38. The loss of water vapour from leaves is called transpiration.
The correct option is B.

$$\boxed{\text{B. Transpiration}}$$

39. The junction between two neurons is called a synapse.
The correct option is B.

$$\boxed{\text{B. Synapse}}$$

40. The binomial system of naming organisms was introduced by Linnaeus.
The correct option is C.

$$\boxed{\text{C. Linnaeus}}$$

SECTION B: THEORY QUESTIONS

1. Define the following:

a) A cell is the basic structural and functional unit of all known living organisms.

b) A tissue is a group of similar cells that work together to perform a specific function.

c) An organ is a collection of different tissues joined together to form a structural unit that performs a specific function.

d) A system is a group of organs that work together to perform one or more major functions in the body.