Vocabulary 1
a body cavity that contains the internal organs
coelom
an animal that does not have a backbone
invertebrate
an animal that has a backbone
vertebrate
Helps with organization and classification
what do invertebrates have to support their body?
Exoskeleton
an organism that eats other organisms or organic matter
consumer
a hard, external structure
exoskeleton
an internal skeleton made of bone and cartilage
endoskeleton
what do vertebrates have to support their body?
Endoskeleton
Why is the outer covering important for invertebrates?
To help with movement
The muscles are attached to the outer covering.
any part of a large structure such as the body of the organisms that are set off by natural or arbitrary boundaries
segment
a system in which the circulatory fluid is not contained entirely within vessels
open circulatory system
a circulatory system in which the heart circulates blood through a network of vessels that form a closed loop.
closed circulatory system
Describe what asymmetrically means.
Not having any symmetry at all.
What is bilateral symmetry?
being symmetrical in two halves.
a process in the lifecycle of many animals during which a rapid change from the immature organism to the adult takes place
metamorphosis
a flexible and strong connective tissue
cartilage
the organ between the stomach and the large intestine where most of the breakdown of the food happens and most of nutruients from food are stored
small intestine
What are the two cnidarian body plans?
Polyp and Medusa
Describe radial symmetry.
symmetry in more than two areas
the process in which the structure and function of the parts of an organism change to enable specialization to those parts.
differentiation
the wider and shorter portion of the intestine that removed water from mostly digested food and that turns the waste into feces
large intestine
is a turtle an invertebrate?
No
Would you expect an animal with radial symmetry to have a head? WHY?
No, because it would not be symmetrical.
What happens when a sound reaches the ear?
The ear sends an impulse through the sensory nerve and the spinal cord to the brain.