NEET 2007
- Exam
- NEET
- Year
- 2007
- Subject
- Zoology
- Chapter
- Organisms and Populations
NEET 2007 · Zoology · Organisms and Populations
Tho population of an insect species shows an explosive increase in...
Tho population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?
Options
- Athe food plants mature and die at the end of the rainy season
- Bits population growth curve is of J-type
- Cthe population of its predators increases enormously
- DS-shaped or sigmoid growth of this insect.
Correct answer
B. its population growth curve is of J-type
Step-by-step solution
If a population (e.g., reindeer population) is allowed to grow in a predator free environment, the population grows beyond carrying capacity and there occurs population crash due to sudden shortage of food. Such growth curves also occur ininsect populations during rainy season, and in Algal blooms. The exponential growth stops abruptly as the environmental resistance or another limiting factor becomes effective.