15. CEPHALOPODS (MOLLUSKS)
• It means “head-footed”.
• Cephalopods have “feet” which are attached
to the “head” containing their eyes.
• The “feet”, which are also called “arms” or
tentacles, are utilized for jet propulsion.
16. CEPHALOPODS (MOLLUSKS)
• They only live in salt water.
• They have big eyes.
• They are all predators; they eat fish,
crustaceans, and other mollusks.
22. ARTHROPODS
This is an external skeleton. Like armor, it protects
the arthropods body.
1. EXOSKELETON
23. Molting is to leave an exoskeleton and grow a new one.
24. ARTHROPODS
This means that they will have a body made up of more
than one part. Spiders have two segments and flies have
three segments. They have symmetrical bodies.
2. SEGMENTED BODY
25. ARTHROPODS
All arthropods have jointed limbs. This means
their arms or legs can flex and bend at joints.
3. JOINTED LIMBS
31. INSECTS
• Some insects go through the same life cycle.
1) Life begins as an egg.
2) The egg hatches and larva emerge.
3) The larvae enter a pupa, chrysalis or cocoon.
4) An adult insect emerges from the pupa.
39. CRUSTACEANS
• Crabs and shrimp can swim.
• Lobsters just scuttle about on the bottom of
the ocean.
• Barnacles stick themselves to a hard surface
like a rock or a boat and never move.
• Hermit crabs can’t make their own shells. They
hide in shells left behind by other animals.
45. ARACHNIDS
• All spiders have venom, but only a few kinds
of spiders are dangerous to people.
• Scorpions have a stinger and strong pincers to
deal with prey.
53. ECHINODERMS
• They can regenerate its body parts:
They have the ability to regrow lost limbs or
other body parts, even internal organs. Some
species can use regeneration to reproduce.
55. ECHINODERMS
• They don’t have eyes.
• They don’t have blood or heart.
• They don’t have a brain.
68. PORIFERANS (SPONGES)
• They live in water and most poriferans don’t
move.
(There are a few sponges that can move. They race along the ocean floor
at a whopping 1-3 millimetres a day!)