Chapter 9 Flashcards
a body plan in which an organisms can be divided into two parts that are nearly mirror images of each.
Bilateral symmetry
has a body plan which can be divided into two parts that are nearly mirror images of each other anywhere through its central axis.
radial symmetry
meaning they have body plans which cannot be divided into any parts that are nearly mirror
aysmmetry
is an inherited trait that increases an organisms chance of surviving and reproducting in its enviorment
adaption
a fluid-filled internal cavity surround by muscle tissue
hydrostatic skelekton
thick hard outer covering called
exoskelekton
animals that survive by living inside or on another organisms get food from other organisms and do not help in the organisms survival.
parasites
internal rigid framework that supports you and other animals
endoskelekton
the body form of an animal changes as it grows from egg to an adult.
metamorphosis
flexible rod-shaped structure that supports the body of a developing chordate.
notochod
are grooves along the side of a developing chordate
Pharyngeal pouches
are organs that exchange carbon dioxide
Gills
a protection membrane that surrounds the embryo
amnion
Special tissues that produce milk for young mamals
mammary glands
animals that heat thier bodies from heat in thier enviorments
ectotherms
animals that generate thier body heat from the inside.
endotherms
an outer covering is shed and related in a process
molting
is a thin layer of tissue that covers a mollusks internal organisms
mantle
