Biology Past Questions And Answers
3391
In the alimentary system of a bird, the function of teeth is carried out by the
- A. crop
- B. beak
- C. gizzard
- D. tongue
3392
Which of following movements occur during exhalation?
- A. The diaphragm and intercostal muscles relax
- B. The thoracic cavity increases in volume
- C. The diaphragm and intercostal muscles contract
- D. The diaphragm contracts and the intercostal muscle relax
3393
The genes crossing over occurs during?
- A. fertilization
- B. mutation
- C. mitosis
- D. meiosis
3394
Octopus is popularly known as ______ fish
- A) devil
- B) jelly
- C) cray
- D) shark
3395
The main difference between a seed and a fruit is that a fruit
- A. is large while a seed is small
- B. has two scars while a seed is has one
- C. is pigmented while a seed is not
- D. can be dispersed by animals while a seed cannot
3396
The easiest way to establish the level of pollution in a local stream is to measure the level of
- A. oxygen
- B. carbon (IV) oxide
- C. ammonia
- D. alkalinity
3397
Which of the following statements about the diaphragm of a mammal is not correct? it
- A. separates the thorax and the abdomen
- B. is a thick layer of muscle
- C. is made of epithelial cells
- D. is part of the human respiratory apparatus
3398
The greatest influence on a stable ecosystem in nature is
- A) man
- B) pollution
- C) animal
- D) rainfall
3399
What is the benefit of thunder and lightning to farmers?
- A. Addition of nitrates to the soil
- B. Aeration of the soil
- C. Removal of harmful bacteria from the soil
- D. Addition of rain water to the soil
3400
The following are functions of the skeleton except
- A. providing support for the body
- B. protection of delicate internal organs
- C. maintenance of the shape of the body
- D. controlling growth rate in animals