What is the term for a single main root that is adapted for storage and which typically grows downward and fairly deep?
a. a rhizome
b. a tuber
c. a taproot
d. a fibrous root
Ans: c. a taproot
You might also like to view...
Biology is more completely understood using an integrated approach as opposed to a compartmentalized approach
A. true B. false
Salmonella typhimurium can change flagellar proteins to evade immune response by host systems. What is this process called?
A. lysogeny B. bacterial transduction C. phase variation D. transposition E. cointegration
Substances that are naturally produced by certain microorganisms that can inhibit or destroy bacteria are called ________.
A. synthetic drugs B. semisynthetic drugs C. narrow-spectrum drugs D. antibiotics E. broad-spectrum drugs
Blood flow through vessel A, 1 mm in diameter, occurs with a 10 kPa pressure gradient from one end to the other. Blood flow through vessel B, 2 mm in diameter, occurs with a 1 kPa pressure gradient from one end to the other. Other conditions are identical. Compared to vessel A, blood flow in vessel B is ____.
a. 1/10 as fast b. 1.6 times faster c. 16 times slower d. 10 times faster