K.C.S.E Biology Q & A - MODEL 2018PP1QN09
The diagram below represents an organ in a bony fish
(a) Name the organ.
(b) Describe how air in water reach the capillaries inside structure L.
b) Fish mouth opens lowering pressure in buccal cavity and water rushes in; mouth closes increasing pressure that forces
water into the gill cavity/opercular cavity; O2 rich water flows over the gills in a counter current direction to capillary blood
flow; causing O2 to diffuse into the gill capillaries;
Follow AtikaSchool.Org on our Social Channels
This gives you an opportunity to get our latest uodates, changes and firsthand information
P.O Box 1189 - 40200 Kisii
Tel: 0728 450 424
Tel: 0738 619 279
Tel: 0763 450 425
E-mail - firstname.lastname@example.org