Which of the following is not a characteristic of annelids?
A. They are segmented.
B. They have bilateral symmetry.
C. They have an incomplete digestive tract.
D. They have a coelom.
E. They have organ systems.
C. They have an incomplete digestive tract.
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Which of the following features of ancient horses are adaptations for living on open grasslands? Check all that apply.
_____ multiple toes that increased flexibility _____ complex patterns of ridges on molar and premolars that increased chewing ability _____ lengthening of limbs that increased running speed over long distances _____ decrease in body size that increased agility in confined spaces
The carnivorous plant with two-sided leaves, each with highly sensitive trigger hairs for snapping shut on small animals is the
A. Venus flytrap. B. horsetail. C. sundew plant. D. pitcher plant. E. club moss.
Which term describes the vital statistics of a population?
a. ecostatistics b. population ecology c. demographics
d. biostatistics e. community ecology
Which of the following organelles is involved in energy production?
a. Smooth ER b. Rough ER c. Mitochondria d. Lysosomes