PRELIMINARY CONTEST 2024
Ejisuman SHS: 32 points
Archbishop Porter Girls’ SHS: 45 points
Wenchi Methodist SHS: 26 points
Mfantsiman Girls’ SHS: 44 points
West Africa SHS: 42 points
Zion College: 40 points
ROUND 2
QUESTION
What name is given to the thin skeletal rods that support the extended parts of the fin of most bony fishes?
ANSWER: Fin rays
EXPLANATION
In most bony fishes, the fins are supported by thin, flexible skeletal rods called fin rays. They provide structural support for movement and stability in water.
PRACTICE QUESTIONS
1. What supports the fins of most bony fishes?
ANSWER: Fin rays
2. What are the stiff, unsegmented supports in some fins called?
ANSWER: Fin spines
3. What are the flexible, segmented supports called?
ANSWER: Soft rays
4. Which fin lies on the back of the fish?
ANSWER: Dorsal fin
5. Which paired fins help steering and braking?
ANSWER: Pectoral fins
6. Which paired fins help balance and stability?
ANSWER: Pelvic fins
7. Which fin on the underside near the tail prevents rolling?
ANSWER: Anal fin
8. Which fin provides most propulsion?
ANSWER: Caudal (tail) fin
9. Name the paired fins of a fish.
ANSWER: Pectoral and pelvic fins
10. Name the median (unpaired) fins.
ANSWER: Dorsal, anal and caudal fins
11. What joins the fin rays together?
ANSWER: A thin fin membrane
12. To which class do bony fishes belong?
ANSWER: Osteichthyes