Waec Biology 2001 Past Questions and Answers

Question 11:

• WAEC 2001

A red blood cell haemolyses when placed in a hypotonic solution because

A. It contains haemoglobin
B. The cytoplasm is less dense
C. The cell lacks a wall
D. Its pigment has a high affinity for water

Question 12:

• WAEC 2001

Which bf the following structures are visible in the cell of a plant during mitosis?

A. Centrioles, chromatids and nucleolus
B. Homologous chromosomes, nuclear membrane and spindle fibres
C. Cell wall, centrioles and chromatids
D. Chromosomes, nuclear membrane and centromere

Question 13:

• WAEC 2001

Display is a phenomenon which occurs when an animal is

A. Ready for mating
B. Fighting to defend itself
C. Approaching puberty
D. Chasing away an intruder

Question 14:

• WAEC 2001

The advantages of sexual reproduction include the following except

A. T allows the formation of new species
B. It allows production of desirable traits
C. It permits variation of individuals
D. It provides means for the variation of chromosome number from generation to generation.

Question 15:

• WAEC 2001

Which of the following groups contains a non-supporting structure in animals?

A. Cartilage, bone and pseudopodia
B. Pellicle, chitin and bone
C. Humerus, ribs and cartilage
D. Femur, pellicle and chitin