Biology Past Questions And Answers
The following are example of morphological variation except
- A. size
- B. ability to taste PTC
- C. color
- D. fingerprint
Kidney stone is a disease of the Kidney that result in the
- A. blockage of the tubules by solid particles
- B. passing out useful materials of the body fluid within the urine
- C. presence of large quantity of water in urine
- D. passing out hormones in the urine
In a Mendelian cross of red and white varieties of the four Oclock plants, the F1 generation expresses incomplete dominance by having flower which are
- A. white
- B. red
- C. pink
- D. multicoloured
The endocrine gland secreting hormone that induces the thyroid gland to produce more thyroxine is
- A. islets of Langerhans
- B. adrenal gland
- C. pituitary gland
- D. parathyroid gland
Each of the following is an arthropod except the
- A) crab
- B) scorpion
- C) spider
- D) snail
Which of the following structures occupies the neural canal of the vertebral column?
- A. cerebellum
- B. hypothalamus
- C. medulla oblongata
- D. spinal cord
Emulsification of fat and oils is caused by ________
- A) Lipase
- B) Ptyalin
- C) Trypsin
- D) Bile
(a) What is dentition in animals?
(b) Describe briefly the generalised structure of a tooth in animals.
(c) List three food substances that plants manufacture from glucose.
(d) Make a diagram, 6 cm to 8 cm long of an experimental set-up to show that oxygen is produced during photosynthesis.
View Discussion (0)WAEC 2021 THEORYRed blood cells were found to have burst open after being placed in distilled water for an hour. This phenomenon is known as
- A. plasmolysis
- B. diffusion
- C. haemolysis
- D. wilting
The random way genes recombine during meiosis and fertilization leads to
- A) genetic variation
- B) phenotype
- C) genome.
- D) genotype

