JAMB 2016 Biology · Question 41
Strong short and concical beak to pick and crush seeds is an adaptive feature of
Options
- A.duck
- B.owl
- C.weaver bird
- D.hawk
Answer: C. weaver bird
Explanation written with AI and checked against the answer key
1. Analyze the question The question asks which bird has a beak shaped for picking and crushing seeds. This is about adaptation of beak shape to feeding habit.
2. Concept: beak shape matches diet
- Seed-eaters (granivores): short, strong, conical beaks that crack and crush seeds (e.g., weaver bird, finch, sparrow, canary).
- Birds of prey (carnivores): strong, hooked, sharp beaks for tearing flesh (e.g., hawk, owl, eagle).
- Ducks (aquatic feeders): broad, flat beaks with ridges for filtering water, mud, and small aquatic organisms.
3. Step-by-step elimination
- A. Duck: broad, flat beak for scooping and filtering food from water. Not suitable for crushing seeds.
- B. Owl: hooked beak for tearing meat. Not a seed-eater.
- C. Weaver bird: short, strong, conical beak that picks and crushes seeds and grains. This fits the description.
- D. Hawk: sharp, curved beak for tearing prey. Not a seed-eater.
4. Answer The weaver bird has the short, strong, conical beak, which is option C.
5. Exam tip Match the beak to the food:
- Conical → seeds
- Hooked → flesh
- Flat and broad → water filtering
- Long and thin → nectar or probing
In JAMB, if you see "conical" or "seed", think weaver bird, finch, or sparrow.
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