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Apologia Biology Ch 12
Apologia
29
Science
9th Grade
03/10/2009

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Term
Exoskeleton
Definition
A body covering, typically made of chitin, that provides support and protection
Term
Molt
Definition
To shed an old exoskeleton so that it can be replaced with a new one
Term
Thorax
Definition
The body region between the head and the abdomen
Term
Abdomen
Definition
The body region posterior the the thorax
Term
Cephalothorax
Definition
A body region comprised of a head and thorax together
Term
Compound eye
Definition
An eye made of many lenses, each with a very limited scope
Term
Simple eye
Definition
An eye with only one lens
Term
Open circulatory system
Definition
A circulatory system that allows the blood to flow out of the blood vessels and into various body cavities so that the cells are in direct contact with the blood
Term
Statocyst
Definition
The organ of balance in a crustacean
Term
Gonad
Definition
A general term for the organ that produces gametes
Term
Name the five common characteristics among the arthropods.
Definition
an exoskelton, body segmentation, jointed appendages, a ventral nervous system, and open circulatory system
Term
Identify the structures in the following diagram
Definition
P. 403
Term
Identify the organs in the following diagram
Definition
P.404
Term
Explain the flow of blood in a crayfish, starting from the pericardial sinus.
Definition
P. 404
Term
What purpose does the green gland serve?
Definition
cleans the blood
Term
What structure is vitally important for respiration in a crayfish?
Definition
Maxillae
Term
What happens if a crayfish loses a limb?
Definition
grows back after what happens?
Term
Where do the fertilized eggs of a crayfish go?
Definition
to the swimmerets
Term
Why do arthropods molt?
Definition
so it can shed its exoskeleton; why do they need to do this?
Term
What two appendages are responsible for taste and touch in a crayfish?
Definition
Antennules and .....
Term
What five characteristics set arachnids apart from the other arthropods?
Definition
They all possess four pairs of walking legs, They all have a cephalthorax instead of separate head and thorax (totalling how many body segments?), They usually have four pairs of simple eyes, They have no antennae, and their respiration is done through organs known as "book lungs"
Term
Do all spiders make silk?
Definition
no
Term
Do all spiders that make silk spin webs?
Definition
no
Term
Why are spider's lungs called book lungs?
Definition
has ..... that look like pages of a book
Term
What four characteristics set insects apart from the other arthropods?
Definition
They have three pairs of walking legs, They almost always have wings at some stage of their life, They have one pair of antennae, and their bodies have all three segments
Term
Why don't insects have respiratory systems?
Definition
they have tracheas
Term
If an insect goes through a pupa stage, does it perform complete metamorphosis or incomplete metamorphosis?
Definition
Complete
Term
What four types of wings exist among insects?
Definition
Scaled, membranous, leather-like, and .....
Term
Match the orders listed below with the wings that have:
Definition
P. 405
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