Which consequence results when a moth larva experiences ecdysteroid deficiency below a critical threshold?

💡 Explanation

Insects need ecdysteroids triggering molting; a deficiency results in incomplete shedding of the old exoskeleton because ecdysis requires a certain ecdysteroid concentration. Therefore, incomplete molting occurs, rather than skipping to pupation or differentiation stages which need higher levels.

• Which consequence occurs when barbules on flight feathers of raptors become separated during soaring?
• In tall trees, which limitation arises because gravitational pull increasingly offsets root pressure, diminishing transpiration?
• Which mechanism minimizes water loss when marine fish osmoregulate?
• Which outcome occurs when ecdysone production prematurely triggers imaginal disc development in holometabolous larvae?
• Which outcome reduces nutrient availability when transpiration decreases in plants?
• Which outcome occurs when nitrogenase is inhibited in Rhizobium bacteria?