This document provides information about different animal phyla and classes. It discusses the characteristics of molluscs like bivalves, gastropods, and cephalopods. It also describes the classes within the phylum Echinodermata, including sea stars, sea urchins, sea cucumbers, and feather stars. Additionally, it summarizes the characteristics of arthropods and highlights examples like insects, spiders, and crustaceans. Finally, it outlines the five classes that make up the phylum Chordata: fish, amphibians, reptiles, birds, and mammals.
7. Cuttlefish have an internal shell the cuttlebone, large W-shaped pupils, and eight arms
and two tentacles furnished with denticulated suckers, with which they secure their
prey.
30. 10/07/13 PHYLUM ECHINODERMATA 30
Class Crinoidea
(crinoids or “sea lilies”)
Diagram illustrating the major body parts of a crinoid.
Feather star. Fossil of a prehistoric stalked
crinoid.
52. 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.
Mosquito Mandible
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.
59. Class Chilopoda
Centipedes are usually terrestrial
carnivores
Have 1 pair of antennae
I pair of leg per segment
Often poisonous, using modified
front claws to immobilize prey
65. Characteristics:
Bilateral symmetry.
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
their life.
66. With pharyngeal or gill slits at
some points in their life.
Have ventral heart, with blood
vessels and a closed circulatory
system
With complete digestive system,
meaning that they have a different
anus and mouth.
With endoskeleton made out of
either bone or cartilage.
68. Class Amphibia
With bony endoskeletons, usually
four legs
Require water at some stage of
life cycle
Skin serves as respiratory organ
Ex . Frogs, salamanders, caecilians
69.
70. Class Aves
With feathers, horny beaks, scaly
legs and they are egg-laying
With wings for flight and with
lightweight bones
Ex. Ducks, doves, chicken
71.
72. Classes of fish
Jawless fishes with eel –like body with no
paired fins
Jawed fishes (ex. Cartilaginous fishes or
placoderms) with bony elements and pairs
of fins.
Bony fishes( 96% of living species)
Ex. Tuna, goldfish, eel, etc.
73.
74.
75.
76. Class Reptilia
with scaly skin which is resistant to
drying
With copulatory organ and produce
amniotic eggs
Ex. crocodiles, turtles, snakes, lizard,
tuataras.
78. Class Mammalia
2 Egg-laying ex. Platypus, Echidna
Bigger brains
With mammary glands to nourish
their young
Covered with hair except the whales
Has specialized teeth