Biology Past Questions And Answers
An importance of food web is that living organisms
- A. use web to collect food
- B. can live on their own
- C. have to form a web
- D. depend on one another for their existence
The group of insects that have mouth parts adapted for both piercing and sucking is
- A) cockroaches, aphids and mosquitoes
- B) aphids, houseflies and moths
- C) mosquitoes, tse-tse flies and aphids
- D) aphids, beetles and grasshoppers
Which of the following relationships does not involve two organisms?
- A. Commensalism
- B. Saprophitism
- C. Symbiosis
- D. Parasitism
Which of the following features could be used to determine the growth of a seedling?
- A. Number of flowers
- B. Number of leaves
- C. Length of flowers
- D. Length of radicle
In which of the following groups is nephridium found?
- A. Crustaceans
- B. Reptiles
- C. Birds
- D. Annelids
Which of the following environmental conditions is ideal for plant cells to remain turgid?
- A. Hot, dry weather
- B. Windy weather
- C. Cold, dry weather
- D. Cool, humid weather
The greatest contribution to genetic studies was made by
- A. Thomas Morgan
- B. Gregor Mendel
- C. Charles Darwin
- D. Robert Hooke
The following insects undergo incomplete metamorphosis except
- A. termite
- B. cockroach
- C. butterfly
- D. locust
In an experiment, a red-flowered plant was crossed with another red-flowered plant and the following results were obtained: 448 red flowers and 154 white flowers in the F1 generation.Which of the following represents the genotypes of the parents if R is for red gene and r for white gene?
- A. RR X Rr
- B. RR X rr
- C. rr x rr
- D. Rr x Rr
The chamber of the mammalian heart with the thickest wall is the
- A. right ventricles
- B. left auricle
- C. right auricle
- D. left ventricle