science Flashcards
1
Q
What do all chordates have in common?
A
They have a notochord and gills.
2
Q
What is metamorphosis?
A
The changes in an animals appearance or size as they grow.
3
Q
What is the difference between an endoskeleton and exoskeleton?
A
Exoskeleton is inside an organisms body and an exoskeleton is on the outer part of the animal.
4
Q
What is Gradual metamorphosis?
A
When an animal only grows in size and their appearance stays the same.
5
Q
What is complete metamorphosis?
A
When the animal goes through all stages of their life for example a caterpillar turning into a butterfly.
6
Q
What is the purpose of gills?
A
Gills help marine animals breathe under water.
7
Q
What is a nerve chord?
A
A nerve chord is a string nerve signal-spinal chord.
8
Q
How many pairs of legs do arachnids have?
A
4 pairs of legs.
9
Q
A
