Adult echinoderms that have radial symmetry lack

A) a coelom.
B) nervous tissue.
C) a head.
D) a tubular gut with separate mouth and anus.
E) a method of movement.


C

Biology & Microbiology

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The plasma membrane is composed mostly of ____

a. phospholipids b. cholesterol c. triglycerides d. steroids e. sphingolipids

Biology & Microbiology

Explain how a person detects gravitational equilibrium.

What will be an ideal response?

Biology & Microbiology

The organelles responsible for the bulk of ATP production via cellular respiration are the ________

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following are found within the monomer unit of DNA?

A. fatty acids, sugars B. phosphate, amino acids C. phosphate, nitrogen bases D. nitrogen bases, fatty acid E. amino acids, nitrogen bases

Biology & Microbiology