Ghana education service

Download 443.64 Kb.

View original pdf

Page	26/51
Date	12.08.2023
Size	443.64 Kb.
	#61842

1 ... 22 23 24 25 26 27 28 29 ... 51

fisheries-syllabus

Discuss with students the functions of the external features of molluscs, crustaceans, bony and cartilaginous fishes.

Students to dissect a bony fish (e.g. tilapia) and observe the arrangement of the internal features. They should draw and label the internal features of the fish. Students to compare the digestive tracts of a herbivorous and a carnivorous fish in relation to their diet.

NOTE:
The presence of accessory structures in some fishes, e.g. Clarias, should be mentioned.

Determine the standard length of Tilapia and Clarias

Using well labelled diagrams, compare the differences in the external features of a bony fish and a cartilaginous fish.

Draw and label the external features of a bony fish and a crustacean.

Describe the function of the following features afoot of mollusc b) spines of echinoderm

Draw and label the gonads of a tilapia.

State and describe the functions of the following organs in a bony fish
- gills
- heart
- swim bladder
- stomach

12
UNIT

SPECIFIC OBJECTIVES

CONTENT

TEACHING AND LEARNING ACTIVITIES

EVALUATION

UNIT 3

LIFE PROCESSES
IN FISHES
–
LOCOMOTION,
DIGESTION,
CIRCULATION AND
GASEOUS
EXCHANGE.

The student will be able to
3.3.1 describe locomotion in fishes.
3.3.2 describe feeding and digestion in fishes.
3.3.3 describe blood circulation in fishes.
3.3.4 describe gaseous exchange in Fishes.

Mode of locomotion in fishes movement of muscles and fins during swimming, maintaining balance, pitching, etc. Ingestion, digestion, absorption and egestion in fishes. Circulation and function of blood in fishes. Mechanism of gaseous exchange in fishes.

Students to observe and describe the movement offish in an aquarium. Students to observe fish feeding in an aquarium. Students to dissect a fish and remove the alimentary canal for gut content analysis. Students to discuss the composition, circulation and function of the blood. Students to discuss the mechanism involved in the absorption of dissolved oxygen from water, and expulsion of carbon dioxide from the fish.

Download 443.64 Kb.

Share with your friends:

1 ... 22 23 24 25 26 27 28 29 ... 51