Biology Past Questions And Answers
Tertiary consumers within the web are
- A. cat and lion only
- B. Man and lion only
- C. man and cat only
- D. man, cat and lion
Which of the following best describes a marine habitat?
- A. large body of water
- B. which has no distinctive color or taste
- C. with high concentration of salt
- D. with little suspended materials
(a) Describe the water cycle using an annotated diagram (s) only.
(b) What is the importance of water tc living organisms?
View Discussion (0)WAEC 2000 THEORYThe distribution of organisms in a fresh water habitat like a stream or pond is determined by the following factors except
- A. light penetration
- B. pH of the soil
- C. rainfall
- D. temperature
The reactants in an enzyme-catalyzed reaction are known as __________.
- A. substrates
- B. pHs
- C. active sites
- D. products
The exchange of genes between homologous chromosomes is called
- A. test cross
- B. back cross
- C. crossing-over
- D. mutation
After one week of life, the weight of five chicks of the same sex hatched simultaneously from the eggs of the same hen and fed on the same diet were 45g, 40g, 35g, 33g and 30g. This is an example of
- A. growth rate
- B. natural selection
- C. variation
- D. mutation
The duodenum of a person was surgically removed. Which of the following substances would have their digestion affected?
- A. starch and protein only
- B. starch and lipids
- C. starch, peptones and maltose
- D. starch, protein and lipids
The early removal of the pituary gland in animals may cause
- A. ceasation of growth
- B. gigantism
- C. poor mental development
- D. goitre
The two keys cation involved in the action potential of nervous transmissions are
- A. Na^+ an Fe^2+
- B. Mg^2+ and K^+
- C. Na^+ and K^+
- D. Fe^2+ and Mg^2+