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Questions and Answers
Which infraorder does the dragonfly belong to?
Which infraorder does the dragonfly belong to?
- Zygoptera
- Insecta
- Odonata
- Anisoptera (correct)
How many extant species of true dragonflies are known?
How many extant species of true dragonflies are known?
- 4000
- 3000 (correct)
- 2000
- 1000
What threatens dragonfly populations around the world?
What threatens dragonfly populations around the world?
- Loss of wetland habitat (correct)
- Predators
- Climate change
- Pesticides
How many ommatidia do the compound eyes of an adult dragonfly have?
How many ommatidia do the compound eyes of an adult dragonfly have?
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How are dragonflies different from damselflies in terms of wing position?
How are dragonflies different from damselflies in terms of wing position?
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Study Notes
Dragonfly Taxonomy and Biology
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Dragonflies belong to the infraorder Anisoptera, a group of insects commonly referred to as "true dragonflies".
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There are approximately 6,000 known extant species of dragonflies around the world.
Threats to Dragonflies
- Dragonfly populations face various threats, including habitat loss, pollution, and climate change.
Dragonfly Eyesight
- An adult dragonfly's compound eyes can have up to 30,000 ommatidia, which are individual light-detecting units.
Distinguishing Dragonflies from Damselflies
- Dragonflies are distinguished from damselflies by their wing position when perched or at rest. Dragonflies typically hold their wings out to the side when not flying, whereas damselflies hold theirs folded together over their abdomen.
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