What features of the elpistostegalid fishes lead us to infer that they were shallow-water forms?

What will be an ideal response?


The elpistostegalid fishes were dorsoventrally flattened (with the loss of the dorsal and anal fins); they had long snouts, perhaps indicating snapping in air rather than suction in water; and they had a powerful upper arm bone (humerus), indicating that they could prop their front end out of the water.

Anatomy & Physiology

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The organelle involved in the production of energy is the ________.

A. mitochondria B. centriole C. cytoskeleton D. ribosome

Anatomy & Physiology

This is a nephron process that results in a substance in blood entering the already formed filtrate

a) reabsorption b) filtration c) secretion d) excretion e) none of these choices

Anatomy & Physiology

Endocrine gland stimuli include hormonal, ________, and ________ stimuli.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

When glucose enters a cell, it is phosphorylated to form __________

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology