The document summarizes the characteristics of the phylum Arthropoda. It belongs to the animal kingdom and includes spiders, insects, crustaceans and others. Arthropods have jointed legs and segmented bodies. They are the most diverse phylum and live everywhere, including on land, in water and air. They exhibit various modes of nutrition from carnivory to herbivory. Reproduction is usually sexual, and locomotion methods include flying, swimming and crawling. The extinct subphylum Trilobita is also discussed, describing their trilobed body shape and existence as marine scavengers and predators over 500 million years ago.

1. Prepared By: Maglasang, Mary Grace C.

2. What is Phylum Arthropoda?
From the greek (arthron,
joint, +pous, podos,
foot)
It includes spiders,
scorpions, ticks, mites,
crustaceans, millipedes,
centipedes, insects and
other less well-known
groups.

3. General
CharacteristicsThe most species-diverse
phylum in the animal
kingdom.
60 cm in length and most
are much smaller.
Usually active and
energetic animals.
Eukaryotic phylum
Jointed legs 3

4. Mode of Nutrition
They utilize all modes of feeding.
Carnivory
Herbivory
Omnivory
Most are herbivorous
Many aquatic antropods are omnivorous.
4

5. Reproduction
most arthropods are normally sexual and
gonochoristic, but can be parthenogenetic.
fertilization may be external or internal in aquatic
arthropods
always internal in terrestrial species
Sperm Transfer
sperm transfer usually by mating or copulation
females usually store the sperm in a seminal
receptacle

6. Locomotion
They can fly.
Swim
Crawl

7. Habitat
Live everywhere.
Air
Land
Fresh brackish and
marine water

9. Scientific
classification

10. Classification

11. Phylum Arthropoda
Subphylum Trilobita (extinct)
Subphylum Chelicerata
Subphylum Crustacea
Subphylum Uniramia (insects)

12. Subphylum
Trilobita

13. Subphylum Trilobita
Trilobita refers to the
trilobed shape of the
body in cross section,
caused by a pair of
longitudinal grooves.
Most of them are
scavengers.

14. General Description
Trilobites had three main body regions:
 Head apparently composed of four fused
segments, bearing a pair of antennae and,
sometimes, compound eyes;
 Thorax with a variable number of separate
segments.
 Abdomen consisting of several fused
segments.

16.  Everything we know about
Trilobites therefore is derived
from fossils, nobody has ever
seen a live one.
 2 to 7 cm in length.
 exclusively marine animals
General Description

17. Mode of Nutrition
Some trilobites were
active predators,
whereas others were
scavengers, and still
others probably
ate plankton.

18. Habitat
the seas of the world
Marine animals

19. Locomotion
Swimming
Crawling

20. Reproduction
 the female simply releases
its eggs into the open water
and the male follows suit by
releasing its sperm.
 the male uses a specialized
pair of appendages on its
abdomen, the so-called
"pleopods", to transfer its
sperm to the female.

22. Thank You for
listening!!
God Bless!!