Subclass Copepoda -
3 pairs of legs
3 body regions - head,
thorax & abdomen
The six include mandibles for cutting through the host's skin. They are blade-like tips which are enclosed within the proboscis and
are protruded to its tip only when the mosquito requires a blood meal. Only then are they protruded through the outer tube to
make a sharp surgical incision.
Then there is the labrum-epipharynx which during the act of biting, becomes a complete tube called the food canal through which
blood is drawn. Whenever the mosquito bites, its saliva is transferred to the wound through the hypopharynx.
Centipedes are usually terrestrial
Have 1 pair of antennae
I pair of leg per segment
Often poisonous, using modified
front claws to immobilize prey
Have 2 pairs of legs per
Primarily herbivores &
With segmented bodies, which
include segmented muscles.
With a well–developed coelom.
With hollow nerve cord that
usually ends with a brain.
With post anal tail at some point in
With pharyngeal or gill slits at
some points in their life.
Have ventral heart, with blood
vessels and a closed circulatory
With complete digestive system,
meaning that they have a different
anus and mouth.
With endoskeleton made out of
either bone or cartilage.
With bony endoskeletons, usually
Require water at some stage of
Skin serves as respiratory organ
Ex . Frogs, salamanders, caecilians
With feathers, horny beaks, scaly
legs and they are egg-laying
With wings for flight and with
Ex. Ducks, doves, chicken
Classes of fish
Jawless fishes with eel –like body with no
Jawed fishes (ex. Cartilaginous fishes or
placoderms) with bony elements and pairs
Bony fishes( 96% of living species)
Ex. Tuna, goldfish, eel, etc.
with scaly skin which is resistant to
With copulatory organ and produce
Ex. crocodiles, turtles, snakes, lizard,