What type of neuron can exist entirely within the central nervous system (CNS)?
A) interneuron
B) motor neuron
C) sensory neuron
D) interneuron and motor neuron
E) interneuron, sensory neuron, and motor neuron
Answer: A
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Dissolved oxygen content in stream water is affected by
(a) organic matter in the water. (b) overgrowth of algae. (c) water nutrient levels. (d) all of the above.
antage to the segmentation that is exemplified in the Phylum Annelida? Check all that apply.
_____ Vital structures are repeated in each segment. _____ The annelid may still survive if one segment is damaged. ______ Locomotion is more efficient. _____ Segments can be specialized. _____ The importance of segmentation is unclear.
Select the best choice for statements 89–93 in reference to the
four groups of protists listed below. a. stramenopiles b. amoebozoans c. alveolates d. parabasalids and diplomonads E 89. The common amoeba, Amoeba proteus, is a member of this group. M 90. The slime molds are members of this group. M 91. The malarial parasite Plasmodium is a member of this group. D 92. This group includes the diatoms. M 93. Paramecium belongs to this group.
Organisms living on the sediment surface of sandy and muddy beaches are collectively referred to as ________
Fill in the blank(s) with correct word