The warm-blooded reptilian ancestors to the dinosaurs and mammals were the ________.

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


therapsids

Therapsids were the warm-blooded reptilian ancestors to the dinosaurs and mammals.

Biology & Microbiology

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Nile blue is used to test for the presence of amino acids

a. True b. False

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The first system to develop in the vertebrate embryo is the:a

circulatory system. b. digestive system. c. excretory system. d. reproductive system. e. nervous system.

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As air is inhaled, which of these four structures is the last to be encountered?

A) larynx B) trachea C) bronchiole D) bronchi

Biology & Microbiology

According to Darwin's theories and observations on "the struggle for existence", organisms better suited to an environment have a greater probability of surviving and will also:

a) lead a long, satisfying life. b) leave more offspring. c) have larger bodies. d) have fewer predators. e) be faster runners.

Biology & Microbiology