The population of an insect species shows and explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show ?

Options

A. the food plants mature and die at the end of the rainy season
B. its population growth curve is of J-type
C. the populuation of its predators increases enormously
D. S-shaped or sigmond growth of this insect.

Answer

To analyze the explosive increase in the population of an insect species during the rainy season followed by its disappearance at the end of the season, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Observation of Population Dynamics**:
- The insect population increases significantly during the rainy season and decreases drastically after the season ends.

2. **Factors Influencing Population Growth**:
- During the rainy season, there is an abundance of resources such as food (crops) and water. The favorable environmental conditions support the growth and reproduction of the insect species.

3. **Post-Rainy Season Conditions**:
- After the rainy season, the availability of food and water decreases as crops mature and die, leading to a scarcity of resources for the insects.

4. **Resulting Population Decline**:
- The lack of food and water results in a sharp decline in the insect population, as they cannot sustain their numbers without adequate resources.

5. **Graphical Representation**:
- The population growth can be represented graphically. The graph will show a J-shaped curve, indicating a rapid increase in population followed by a sharp decline.

6. **Conclusion**:
- The pattern observed indicates that the population growth curve of the insect species is J-shaped, which is characteristic of populations that experience rapid growth followed by a sudden decrease due to environmental constraints.

### Final Answer:
The explosive increase in the population of the insect species during the rainy season followed by its disappearance at the end of the season shows that its population growth curve is J-shaped.

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