Biology Past Questions And Answers
2221
Which of the following used diffusion as the principal method of gaseous exchange?
- A. lizard
- B. grasshopper
- C. rat
- D. earthworm
2222
In which of the following insects is group instinct not displayed?
- A. Solder ants
- B. Cockroaches
- C. Honey bees
- D. Termites
2223
The group of animals described as glorified reptiles is
- A) Pisces
- B) Amphibian
- C) Aves
- D) Mammals
2224
A dry, indehiscent, winged fruit formed from one carpel is known as
- A) schizocarp
- B) caryopsis
- C) samara
- D) nut
2225
A food web is more stable than a food chain because
- A. it contains more organisms
- B. it has greater energy source
- C. it is not easy to destroy
- D. every organism has an alternative source
2226
The distribution of organisms in a fresh - water habitat like a stream or pond is determined by the following except
- A. rainfall
- B. temperature
- C. pH of soil
- D. light penetration
2227
The hygrometer is used for measuring
- A. relative humudity
- B. specific gravity
- C. rainfall
- D. salinity
2228
Which of these instruments can be used to perform an experiment on geotropism?
- A. Potometer
- B. Cup anemometer
- C. Klinostat
- D. Kymograph
2229
The disaster that would have the least destructive impact on animal life and balance in nature is
- A. chemical pollution
- B. forest fires
- C. oil spillage
- D. grasshopper pests
2230
Which of the following structures is not involve in respiration?
- A. Lung books
- B. Mouth
- C. Stomach
- D. Trachea

