JAMB 2016 Biology · Question 41

Strong short and concical beak to pick and crush seeds is an adaptive feature of

Options

  1. A.duck
  2. B.owl
  3. C.weaver bird
  4. 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.

AI can make mistakes. Report anything that looks wrong.

Past questions © the examination body (JAMB/WAEC/NECO). DeeepSolve is not affiliated with them. Rights holders: see /copyright.