This PPT is for F.Y.B.Sc students of course I Semester I, belonging to Mumbai University of Maharashtra India. You can email at sudesh_rathod@yahoo.co.in for further query.

1. COURSE I – FIRST SEMESTER
PHYLUM ARTHROPODA
Animals with jointed legs
Compound eyes
Chitinous exoskeleton
Prof. S D Rathod

2. Arthropods
 Arthropoda is the largest group of the animal
kingdom
 Bilaterally symmetrical, triploblastic and
metamerically segmented
 Sexes are usually separate with sexual
dimorphism
 Metamorphosis

3. Jointed legs

4. Compound eye

5. Compound eye in details

6. Crustacean Larvae
Zoea
Embryo Nauplius
Phyllosoma
Mysis
Megalopa Alima

7. Zoea larva

8. Zooplankton
Cyclops
Calanus
Daphnia
Zooplankton
Krill

9. Complete Metamorphosis

10. Incomplete metamorphosis

11. Class – Crustacea (animals with crusta)
 They have five pairs
of walking legs
 Cephalothorax with
crusta or carapace
 Stalked compound
eyes
 antennules and
antennae are present
 Example - Spiny
Lobster

12. Spiny Lobster

13. Several small crustaceans play role
of planktons
Daphnia Cyclops Calanus
Krill
 Zooplankton

14. Class – Insecta:
 Body divisible into
head, thorax and
abdomen
 Three pairs of thoracic
walking legs
 Only antennae are
present
 example is Beetle

15. Beetles

16. Class – Myriapoda
 Body divisible into head and trunk
 Mostly terrestrial;
 They have many pairs of walking legs. Each leg
is seven jointed
 Head has a pair of antennae and compound
eyes
 Example - Centipede

17. Centipede

18. Millipede

19. Class – Arachnid
 Animals with prosoma and opisthosoma
 Four pairs of walking legs
 Respiration is by book lungs

20. Spider

21. Black widow spider

22. Tarantula spider
 Largest spider

23. Scorpion
 Scientists in the US have
claimed that scorpion venom
may help in the treatment of a
wide range of cancers.
 The Amazonian scorpion the
most venomous of all the
scorpions in the world and
needs medical aid otherwise
the person stung would sweat
profusely and there would
spasmodic movement of the
body. In such an even an
antidote is required.

24. Ticks
 Tick Facts
Ticks are blood-eating
parasites that live and
feed on mammals, birds
and reptiles around the
world.

25. Mites  Dust mites do not
feed on blood but
the dead skin cells
and the in the dust.
 Some live creating
burrows in our skin
causing scabies.