Insects wherein juveniles undergo complex or indirect metamorphosis are described as _____________?
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Answer: B. Holometabola
Explanation
Holometabolous insects undergo complete metamorphosis featuring distinct egg, larval, pupal, and adult life stages. Juveniles in this category look completely different from adults and occupy entirely separate ecological niches. This complex developmental pathway allows larvae to focus on feeding while adults specialize in dispersal and mating. Holometabola is the largest insect grouping, containing beetles, butterflies, flies, wasps, and moths. Complete metamorphosis is regulated by complex interactions between juvenile hormone and ecdysone. The intervening pupal stage transforms larval tissues into fully developed adult anatomical structures.
Managing holometabolous pests often requires applying different control strategies for larvae and adult stages. Evolutionary biologists believe complete metamorphosis contributed significantly to the immense diversification of insects. Crop scouts must recognize both larval and adult forms of holometabolous pests during field monitoring. Option A is incorrect because hypermetamorphosis involves unusual multiple larval forms within complete development. Option C is incorrect because ametabolous insects undergo no metamorphosis, hatching as miniature wingless adults. Option D is incorrect because hemimetabola describes incomplete metamorphosis with nymphal stages resembling adults.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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