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Which of these edaphic factors is most crucial for the development of nematodes?

Question: Which of these edaphic factors is most crucial for the development of nematodes?

Options:

Temperature
Moisture
Texture
pH

✅Explanation:
While all edaphic factors play a role in nematode development, temperature is the most crucial. Nematodes are ectothermic organisms, meaning their body temperature and metabolic rate are directly influenced by the surrounding environment. Temperature affects their life cycle, including egg hatching, juvenile development, feeding, reproduction, and survival.

• Why Temperature is Crucial:
Egg hatching: Nematode eggs have a specific temperature range for optimal hatching. Too low temperatures slow down or prevent hatching, while excessively high temperatures can kill the eggs.
Juvenile development: The growth and molting of juvenile nematodes are temperature-dependent. Warmer temperatures generally accelerate development, while colder temperatures slow it down.
Feeding and reproduction: Nematode feeding and reproductive rates are higher at optimal temperatures. Lower temperatures reduce their activity and reproductive potential.
Survival: Nematodes have an upper and lower temperature limit for survival. Extreme temperatures can be lethal to them.

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