Waec Biology Past Questions For Year 2006
Question 16
The ventricles of the mammalian heart have thicker
muscular walls than the auricles because the
- A. ventricles are larger
- B. ventricles receive more blood
- C. ventricles pump blood to longer distances
- D. auricles have smaller capacity
Question 17
Which of the following organs in mammals is not excretory in function?
- A. Liver
- B. Kidney
- C. Pancreas
- D. Lungs
Question 18
Gaseous exchange occurs through the following structures in some organisms except
- A. spiracle and tracheae
- B. alveoli and lungs
- C. stomata and lenticels
- D. chloroplast and plastids
Question 19
Which of these factors does not contribute towards
the ascent of water in plants?
- A. Root pressure
- B. Capillarity
- C. Transpiration pull
- D. Turgor pressure
Question 20
Which of the following statements best describes pollination? The transfer of pollen grain from
- A. anther to stigmas
- B. stigmas to stamens
- C. the anther of a flower to the stigma of another flower of a different species
- D. anther to the ovary
