Second electron shell of an atom can hold maximum of __ electrons
a. 6
b. 7
c. 8
d. 9
Answer: c. 8
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The plant hormone that prevents seed germination even if conditions of temperature and moisture conditions are appropriate would be:
A. auxins B. gibberellins C. ethylene D. abscisic acid E. brassinosteroids
What is contained in the coelom?
a. ingested nutrients and digestive enzymes b. primarily the epidermis, dermis, and hypodermis c. most of the organism’s organs d. undigested waste material
What occurs during exhalation?
a. Oxygen is taken in through the nasal cavity. b. Oxygen is released back into the air. c. Carbon dioxide is released back into the air. d. Carbon dioxide is taken in through the nasal cavity.
A process in which organisms with certain inherited characteristics are more likely to survive and reproduce than individuals with other characteristics is called __________.
A. .evolutionary adaptation B. descent with modification C. natural selection D. evolution