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Biology Terms

Puzzle Type: Educational
Author: Alycia
Across
When an animal has separate holes for eating and pooping
a person or animal having both male and female sex organs
Animals that have one hole for both eating and pooping
situated on or close to the anterior aspect of the human body or the lower surface of the body of an animal.
The blood closed at all times within vessels of different size and wall thickness.
toward, on, in, or near the back or upper surface of an organ, part, or organism
an external skeleton
the caudal end of the body in the quadrupeds or the back of the body in humans and other primates
situated on one side or other of the body or of an organ, especially in the region furthest from the median plane
an internal skeleton
Down
Blood is pumped by a heart into the body cavities
Animals that maintain a constant body temperature
Symmetrical arrangement of an organism or part of an organism along a central axis
a basic body plan in which the organism can be divided into similar halves by passing a plane at any angle along a central axis
Permanently attached or fixed; not free-movin
Lacking a backbone or spinal column; not vertebrate.
An evolutionary trend in the animal kingdom toward centralization of neural and sensory organs in the head or anterior region of the body.
Located near or toward the head in lower animals. Located on or near the front of the body in higher animals.