Four of the five answers are features of the echinoderms. Select the exception

a. spiny skin
b. decentralized nervous system
c. radial symmetry
d. a water-vascular system
e. a mantle


e

Biology & Microbiology

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In angiosperms, double fertilization produces a trinucleate cell that gives rise to a ____ endosperm and a ____

embryo.

a. haploid; triploid b. triploid; haploid c. triploid; diploid d. diploid; triploid e. diploid; haploid

Biology & Microbiology

A mutant soybean plant that is unable to produce leghemoglobin will most likely suffer from ____ deficiency

a. phosphorus b. magnesium c. potassium d. oxygen e. nitrogen

Biology & Microbiology

The ____ drives inhalation by stimulating contraction of the diaphragm and intercostal muscles

a. ventral interneuron group b. pons interneuron groups c. carotid bodies d. dorsal respiratory group e. aortic bodies

Biology & Microbiology

A young patient presents with a small invagination of the skin on the anterolateral neck, just below the jaw. The CT scan of this patient indicates a cervical (pharyngeal) cyst connected to it. What term describes the invagination?

A. Ectopic thymus B. External Branchial Fistula C. Internal Branchial Fistula D. Pharyngeal Cleft E. Pharyngeal Pouch

Biology & Microbiology