Waec 1997 Biology Past Questions And Answers
1
Which of the following is an abiotic factor?
- A. Predation
- B. Rainfall
- C. Cropping
- D. Grazing
2
In palm-wine, yeast acts as a
- A. carrier
- B. culturing agent
- C. preservative
- D. catalyst
3
The maximum and minimum thermometer is used to measure
- A. light intensity
- B. highest and lowest temperature of the day
- C. atmospheric pressure
- D. highest and lowest amount of rainfall in a month
4
Which of the following factors may not cause over-crowding?
- A. Limited space
- B. Scarcity of food
- C. Reduced birth rate
- D. Lose immigration conditions
5
Which of the following organelles helps to remove excess water from cells?
- A. Mitochondrion
- B. Ribosome
- C. Contractile vacuole
- D. Golgi body
6
Which of the following organisms will have the highest biomass?
- A. Small fish
- B. Tadpole
- C. Hawk
- D. Phytoplankton
7
(a) Describe the process of osmo regulation in (I) a named unicellular organism (ii) man
(b) Describe how the mammalian skin can react to regulate the body temperature in a hot room.
View Discussion (0)WAEC 1997 THEORY8
Which of the following factors does not affect the distribution of organisms in an aquatic habitat?
- A. Turbidity
- B. Depth of water
- C. Humidity
- D. Temperature
9
The essential parts of a flower are
- A. petals and sepals
- B. anther and filament
- C. stigma and style
- D. androecium and gynoecium
10
Which of the following farm practices can cause loss of soil fertility?
- A. Mulching
- B. Compost application
- C. Use of fertilizers
- D. intensive cropping