WAEC Biology

OBJECTIVES 1. Special modification which enable an organism to survive in its habitat is known as A. adaptation. B. tolerance. C. mimicry. D. colouration. 2. The inability of an organism to adapt to its habitat can lead to A. dormancy. B. adaptation. C. extinction. D. survival. 3. An animal which…

OBJECTIVES 1. Squirrels easily kill some trees because A. they inject poisonous substances into the trees. B. most trees are susceptible to squirrel bites. C. they feed voraciously on the roots. D. they gnaw the bark and destroy the phloem. 2. Which of the following organisms is an endo-parasite? A.…

OBJECTIVES 1. The part of a leguminous plant where bacteria like Azotobacter can be found is A. at the nodes of the stem. B. at the internodes. C. in the root nodules. D. in the spongy mesophyll. 2. What is the benefit of thunder and lightning to farmers? A. Addition…

1. The diagrams below are parts of a human lung. Which of the labelled parts is diagram Z taken from? A. II. B. III. C. IV. D. V. 2. In the adult frog gaseous exchange takes place through the A. buccal cavity, skin and lungs. B. buccal cavity, skin and…

OBJECTIVES 1. The pulmonary circulation involves movement of the blood to and from the A. brain. B. kidneys. C. liver. D. lungs. The table below shows the blood composition of four individuals. Use the Information contained in the table to answer questions 2 & 3 Individual     Blood CompositionPlasma…

OBJECTIVES 1. A person suffering from obstruction of the bile duct is advised not to eat fats and oil because A. bile digests fats and oil. B. fats and oil can only be absorbed when bile is absent. C. bile emulsifies fats and oil. D. bile adds water to digesting…

OBJECTIVES 1. When fertilization occurs that leads to formation of a zygote, which of the following processes takes place? A. The tail of the sperm fuses with the egg cell. B. Both tail and head of the sperm fuse with the egg cell. C. The nucleus of the sperm fuses…