The insect head is essentially a capsule which encloses the brain and bears the usually external (ectognathous) mouthparts, the eyes and a pair of sensory antennae. The mouth part comprise basic sections as:
Correct answer: B. All of these
- A. An 'upper lip' (labrum), lower (ventral) surface of which forms the epipharynx
- B. All of these
- C. The paired maxillae and a 'lower lip' (labium).
- D. a tongue-like hypopharynx; the jaws (mandibles)
Explanation
The standard insect mouthpart plan includes the labrum and epipharynx, hypopharynx and mandibles, paired maxillae, and labium. Therefore, all three listed descriptions are parts of the basic mouthpart structure.
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