animals
These effectors produce hormones that control vital functions such as growth and reproduction.
What is Glands?
These are mostly aquatic animals which have an external shell that is in the form of a spiral.
what are Gastropods?
Starfish and sea urchins are examples of what?
what are Echinoderms?
These are invertebrates that have soft bodies and bilateral symmetry and are mostly aquatic organisms but not all.
what are molluscs?
These are marine animals which have tentacles.
What are cephalopods?
All animals carry out what type of reproduction?
what is sexual reproduction?
Invertebrates body temperature depends on the external temperature which means they are what?
what is ecotherms?
All insects have this and in beetles this is very strong.
What is an exoskeleton?
These are aquatic animals that have radial symmetry and their cells are grouped into simple tissues and some have organs.
what are cnidarians?
These use gills or their skin or breathe and many have 5 or more legs.
What are crustaceans?
This helps provide animals shape and supports the muscles so movement can take place?
what is a Skeleton?
Nautiluses and some other molluscs, such as snails, have a what?
what is a shell?
what are the 2 parts of a crustacean's body?
what are Cephalothorax and abdomen?
These have asymmetrical bodies or have radial symmetry and live in the sea with no true organs or tissues.
what are sponges?
roundworms that don't have segmented bodies are called what?
what are Nematodes?
Name 3 of the 4 systems that help animal cells get the nutrients and oxygen they need to perform vital functions.
digestive, respiratory, circulatory, and excretory.
Cnidarians have 2 basic body types named what?
what are polyps and medusae?
Insects use this system to obtain oxygen.
what is the tracheal system?
Annelids have cylindrical bodies that are divided into segments called what?
what are metameres?
what is cephalisation?
Nerve centres and sense organs are located in one end of the body.
Name the 3 types of symmetry in animals and what do they mean?
Bilateral, radial, asymmetrical
These make up 75% of all known species and exist in all sorts of environments.
what are Arthropods?
Name the three parts of an insects body.
Head, Thorax, Abdomen
These breathe through spiracles and have antennae.
What are Myriapods?
These have a muscular foot and don't have a head.
What are Bivalves?