Symmetry & Segmentation
The sponge is an animal that displays this kind of symmetery.
What is asymmetry?
The name given to the various different kinds of body coverings found in animals
What is integument?
A respiratory organ found in aquatic arthropods
What is a gill?
In vertebrates this organ runs from the anterior to the posterier end of the animal and is reponsible for digestion
What is the gut
This group of animals has members that can reproduce both sexually and asexually.
What are invertebrates?
This type of symmetry evolved as animals became more and more motile
What is bilaterial symmetry?
In amphibians it also serves as a respiratory organ?
What is the skin?
A type of circulatory system in which the internal organs are bathed in blood
What is an open circulatory system?
In these animals wastes are excreted as dissolved ammonia.
What are aquatic invertebrates?
An organism that can produce both male and female gametes.
What is a hermaphrodite?
Jellyfish display this kind of symmetry.
What is radial symmetry?
This is the integument of reptiles and fish
What are scales?
A type of circulatory system in which the blood never leaves the vessels and gas exchange occurs between the body's cells and the blood vessels
What is a closed circulatory system?
A specialzed organ present in many vertebrates for filtering waste products from the blood
What is a kidney?
A morphologically distinct form present in the development of some invertebrates.
What is a larva?
A patter of a reapeating form seen in almost all animals.
What is segmentation?
Many mammalls are covered in a layer of this to insulate their bodies
What is fur?
Organs compsed of moist membranous cells buryed deep within the animals body which are responsible for gas exchange.
What are lungs?
This toxic waste product is produced by the cells of both invertebrates and vertebrates
What is ammonia?
When an animals looks more or less the same from it's early developmental stages as it does as an adult.
What is direct development?
Compared to vertebrates, invertebrates show a lot more:
This is the hard outer covering of arthropods
What is an exoskeleton?
In vertebrates this muscle is often multichamabered making it more efficient
What is the heart?
This animal doesn't have a specialized digestive system and instead it occurs in each cell of the organism.
What is a sponge?
In these groups of animals sprem and eggs are released into the water where fertilization and development occurs.
What are amphibians and fish?