Did jawed vertebrates outcompete the jawless ones? Does the fossil record provide any evidence?
What will be an ideal response?
Jawed and jawless vertebrates lived together for tens of millions of years, so competition is an unlikely explanation for the disappearance of most jawless vertebrates. The late Devonian extinctions wiped out the ostracoderms along with many invertebrates and several types of jawed fishes (including placoderms).
You might also like to view...
The inner lining of the heart is the
A. epicardium. B. pericardium. C. endocardium. D. myocardium.
Binding of scent signals to olfactory receptors
a. activates G proteins b. results in cAMP production c. opens sodium channels d. causes all of the above e. caused only a and b
Acromegaly develops from a deficiency of the growth hormone
Indicate whether the statement is true or false
What is a malignant neoplasm derived from connective tissue?
A. metastasis B. malignant C. sarcoma D. benign E. carcinoma