Which of the following have a flexible cuticle,
longitudinal muscles, a complete digestive system,
and a false coelom?
a. nematodes
b. cnidarians
c. flatworms
d. echinoderms
e. sponges
Answer: a
You might also like to view...
Plants lacking a well-developed vascular system, true roots and leaves are informally known as
a. gametophytes b. sporophytes c. angiosperms d. gymnosperms e. bryophytes
The stronger the stimulus, the larger the receptor potential
Indicate whether the statement is true or false
Which division of the human nervous system carries signals to skeletal muscles?
A) parasympathetic nervous system B) sympathetic nervous system C) motor system
Which of the following clusters of terms accurately describes DNA as it is generally viewed to exist in prokaryotes and eukaryotes?
A) double-stranded, antiparallel, (A + T)/C + G) = variable, (A + G)/(C + T) = variable B) double-stranded, parallel, (A + T)/C + G) = 1.0, (A + G)/(C + T) = 1.0 C) single-stranded, antiparallel, (A + T)/C + G) = 1.0, (A + G)/(C + T) = 1.0 D) double-stranded, parallel, (A + T)/C + G) = variable, (A + G)/(C + T) = 1.0 E) double-stranded, antiparallel, (A + T)/C + G) = variable, (A + G)/(C+ T) = 1.0