Waec 1998 Biology Past Questions And Answers
Which of the following processes removes CO^2 from the atmosphere?
- A. Respiration
- B. Photosynthesis
- C. Transpiration
- D. Excretion
Which of the following instrument can be used to measure relative humidity?
- A. Anemometer
- B. Hygrometer
- C. Wind gauge
- D. Barometer
The role of bacteria in the nitrogen cycle includes the following except
- A. fixing atmospheric nitrogen
- B. converting ammonia to nitrites
- C. converting nitrites to nitrates
- D. converting carbohydrates to carbondioxide
Which of the following plants is a carnivore?
- A. Desmodium
- B. Sundew
- C. Mushroom
- D. Platycerium
(a) (i) Name the two stages involved in photosynthesis.
(ii) Write an equation to represent the first stage of photosynthesis.
(b) (i) List six modes of nutrition in organisms.
(ii) Name one feature that makes feeding possible in the following organisms: I. Paramecium; II Spirogyra; Ill Rhizopus; IV Tape worm.
(c) Define the term balanced diet.
(d) (i) State three characteristics of enzymes.
(ii) in a tabular form, indicate the source, substrate acted upon and the product of the following enzymes: ptyalin and pepsin.
View Discussion (0)WAEC 1998 THEORYThe mode of nutrition which describes feeding habit in animals is
- A. autotrophic
- B. holozoic
- C. holophytic
- D. saprophytic
Which of the following is not an organ?
- A. Hair
- B. Tongue
- C. Rhizome
- D. Corn
The pancreatic duct opens into the
- A. caecum
- B. colon
- C. ileum
- D. duodenum
Which of the following mammalian features acts as a shock-absorber to the developing embryo?
- A. Amniotic fluid
- B. Umbilical cord
- C. Placenta
- D. Amnion
In a food chain, each stage in the chain is a
- A. chain level
- B. web level
- C. consumption level
- D. trophic level