2015 - JAMB Biology Past Questions and Answers - page 7

Option D is correct. This is because, placenta establishes an intimate connection between the embryo and the mother. This connects the placenta to transfer food,water and oxygen from mother to the embryo or foetus

Option A is the correct answer. This is because, cochlea is the structure of the mammalian hearing organ called ear.

Option C is correct. This is because for deoxygenated blood (blood containing carbon (iv) oxide) in the heart to be returned back to the lungs for the removal of the CO2,pulmonary artery aids in the process.

Option A is correct. This is because, cell is the basic functional and structural unit of life.

Options A, B and C are not correct. This is because, they are all true fruits (i.e, the fruits that develops solely from a fertilized ovary.
Option D is correct. This is because, pineapple is a false fruit (a fruit developed or formed from the ovary and other floral parts of the plant or fruit flowers.

Option D is correct. This is because, tsetse fly is the vector that transmits trypanosome that causes trypanosomiasis or sleeping sickness.

Option D is correct. This is because, salivary glands are found in the mouth, which secretes a juice called saliva that contains an enzyme called ptyalin.

Option B is correct. This is because, leucocytes is another name for white blood cells

Option B is correct. This is because, the removal of the remnant particles of digestion called faeces is done through a process called egestion.

Options A and B are not correct.
Option C is correct. This is because, the mouth is the location where enzyme ptyalin acts on starchy food.
Option D is wrong. This is because, stomach is location for the action of renin and pepsin enzymes.