Waec Biology Past Questions and Answers

Question 1791:

• WAEC 2018

a. Explain briefly the following terms:
i. gene;
ii. Hybrid;
iii. Trait.
(b) Two heterozygous yellow flowers are crossed. Using a genetic diagram, state the phenotypic and genotypic ratios of the first filial generation.
(c) State four transmitted characters in plants.

Question 1792:

• WAEC 1988

what stage mitotic division is represented in the diagram of the cell illustrated above

A. Prophase
B. Telophase
C. Anaphase
D. Metaphase
E. Interphase

Question 1793:

• WAEC 1988

what stage mitotic division is represented in the diagram of the cell illustrated above

A. Prophase
B. Telophase
C. Anaphase
D. Metaphase
E. Interphase

Question 1794:

• WAEC 1988

This stage of mitosis is characterized by the

A. Movement of the chromosome to the poles
B. Arrangement of chromosomes on the equitorial planes
C. Centromeres moving apart along the spindle
D. Interaction of the spindles with the chromosomes
E. Condensation of chromosomes and formation of spindles

Question 1795:

• WAEC 1988

The ability of organisms to maintain a constant internal environment is known as

A. Diuresis
B. Endosmosis
C. Plasmolysis
D. Dialysis
E. Homeostasis