The two things you need to know about brittle starts concerning their arms and feet.
long slender arms and suction cups of tube feet.
100
These vertebrates have a notochord? (nerve cord)
What are chorodates
100
This refers to when body temperature is close to the temperature of the environment that the animals are in.
What is ectotherm.
100
What are echinoderms usually made of?
calcium plates
200
How many body parts to Echinoderms usually have?
Multiples of 5
200
The three things you need to know about sea star concerning their stomach, etc.
They are excellent predators, go through regeneration and feed by forcing stomach out of their mouth.
200
In humans what is a notochord?
referred to as a backbone, cartilage fills the spaces between the backbone.
200
Ectotherm examples
fish, amphibians, reptiles
200
When is body temperature controlled and regulated by internal heat?
Endotherm
300
What is the water vascular system usually for?
Movement and obtaining food
300
What do you need to know about sand dollars?
no arms and burrow into the sand.
300
This backbone is made of vertebrae and gives support/ protects the body.
What is endoskeleton?
300
Endotherm examples
birds and mammals
300
Where can endotherms lives?
greater variety of environments than ectotherms.
400
Where are they and how do they move?
They crawl on the ocean floor.
400
What do you need to know about sea urchins?
No arms and have movable spines for protection.
400
What else does an endoskeleton do?
Supports and protects the body, gives body shape and gives muscles a place to attach.
400
Characteristics of endotherms.
hair, fur, feathers, sweat glands to help regulate body temperature
400
What is a characteristic of echinoderms related to their sexes?
Usually separate sexes
500
How do they become adults?
Swimming larva undergo metamorphosis to become an adult.
500
What do you need to know about sea cucumbers about their bodies etc.
They have soft flexible and muscular bodies, a mouth surrounded by tentacles, tube feet and are filter feeders.
500
How are endo and exoskeletons different?
Endoskeletons grow as the animal grows and gives support support against gravity allowing easy movement. Because of this vertebrates can grow larger than invertebrates.
500
Tell me a little about the evolution of vertebrates?
The first vertebrates were fish, followed by amphibians, reptiles, mammals and finally birds.