Question 1
Fill in the missing words on functions of the fish fins.
(11)
The fish has two pair of fins: (a)............ and (b)..................
Both sets of fins are used for (fh ..........,..(d). .................and (e)................
Pelvic fins -each of a pair of fins on the underside of a fish's body, attached to the pelvic
girdle and helping to (f) ...................
(g). ................f.ins are used for braking.
The unpaired dorsal and anal fins are used for (h)................ and (k).................
specially at (I )....................
The (m)........................ fin is used for propulsion (acceleration).
Question 2
Rearrange the fish organ to correspond with their functions?
(8)
Organs
Gill lamellae
Swim bladder
Body cavity
Epidermis
Functions
Regulate the buoyancy of the fish
Defense against external parasites and aids
in streamlining the body of the fish
Respond to current water flow mechanism
that enables them to take up oxygen by
osmosis across cell membrane
Houses the internal organs
Question 3
Explain how the fish move gas into and out of the swim bladder.
Question 4
Explain the osmoregulation of marine and freshwater fish.
Question 5
Fill in the missing type of infection and diseases of fish?
Type of infections
Diseases
a.
Trichodiniasis
b.
Chilodonellasis
Ectoparasitism
C.
d.
Sanguinicolosis
e.
Saprolegniasis
Parasites
f.
g.
Vibriosis
Question 6
Indicate whether the following statements are true or false.
6.1 The chicken skin is free of secretory glands
6.2 The comb color can tell you what color egg the chicken will lay.
6.3 Female hackle and saddle feathers have rounded ends
6.4 The comb functions as cooling system
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(1)
(1)
(1)
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