Biology Past Questions And Answers
The theory of evolution can be defined as
- A. The belief that all species were created in their current form
- B. The hypothesis that organisms strive to improve themselves over generations
- C. The idea that species change over time through natural processes
- D. The concept that evolution occurs through a series of sudden and dramatic changes
The process in which insects undergo conspicuous changes in form and appearance during development is known as
- A. ecdysis
- B. metamorphosis
- C. aestivation
- D. migration
The maximum size of a population that a given area can support is known as
- A. population density
- B. carrying capacity
- C. population growth
- D. maximum population
Which of the following factors is not associated with aquatic habitat?
- A) Temperature
- B) Light intensity
- C) Humidity
- D) wave action
Which of the following hormones is produced during fright or when agitated?
- A) insulin
- B) adrenalin
- C) thyroxine
- 6
Seed plants are the most dominant vegetation on land because of
- A. their motile gamates
- B. their ability to photosynthesize
- C. efficient seed dispersal
- D. availability of water
Which of the following environmental factors is not considered in a terrestial habitat?
- A. Temperature
- B. Sunlight
- C. Humidity
- D. Turbidity
In which of the following does external fertilization takes place?
- A. Toad
- B. Lizard
- C. Bird
- D. Cockcroach
According to the law of independent assortment, what is the possible number of combinations that chromosomes can assort to independently in the gamete?
- A 8,388,608
- B. 4,194,304
- C. 70,368,744,177,664
- D. 16,777,216
The specific portion of a habitat which is occupied by a particular species is referred to as
- A. Ecological population
- B. Ecological niche
- C. Biotic community
- D. Ecosystem