water loss This presents challenge for gas exchange Problem solved with tracheal system Tracheae are highly-branched cuticular tubes Open to outside through spiracles Taper down from 1+ mm to 0.0001 mm Can provide oxygen directly where it is needed Aquatic insects have tracheal gills Excretion/Water Balance Insects/spiders have malpighian tubules Potasium, other solutes, secreted into tubules Secreted as uric acid See Fig.
(Aquatic insects; have tracheal; ) (water loss; solved; with tracheal system Tracheae; are highly-branched cuticular tubes Open to outside through spiracles Taper down from 1+ mm to 0.0001 mm) Context(water loss solved,List([0, 66))):(This; presents; challenge for gas exchange Problem) (Excretion/Water Balance Insects/spiders; have; malpighian tubules Potasium, other solutes) (other solutes; secreted; ) (tubules; Secreted; as uric acid) (it; is needed; )
water loss solved,List([0, 66))
Aquatic insects water loss This Excretion/Water Balance Insects/spiders other solutes tubules it
have tracheal solved presents have secreted Secreted is needed
with tracheal system Tracheae are highly-branched cuticular tubes Open to outside through spiracles Taper down from 1+ mm to 0.0001 mm
challenge for gas exchange Problem
malpighian tubules Potasium, other solutes
as uric acid