Multiple independent experiments have demonstrated that phytochrome helps trigger seasonal change responses in the plant such as changing color and loosening of leaves. Plants have the ability adapt to seasonal changes in their surroundings. This statement is an example of:
A. a hypothesis
B. deductive reasoning
C. a theory
D. an experiment
E. inductive reasoning
C. a theory
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Which of the following is the reason humus is important as a soil component?
A. helps plants maintain upright growth B. keeps plants in place so they do not fall over C. puts plants closer to water sources D. helps plants by providing more water and minerals E. allows roots to grow deeper to reach water below
The facial cranial nerves of mammals collect sensory information from the:a
facial expression and salivary glands. b. teeth and skin of the face. c. olfactory epithelium of the nose. d. muscles of the tongue. e. cochlea.
A typical human yawn lasts for about six seconds and once initiated, is nearly impossible to stop. Although there are many hypotheses for why we yawn, it is accepted that yawning is contagious - when we see someone else yawn, we often find ourselves yawning as well. This happens across all cultures and even in infants! In this case, the yawn an individual observes is ________, while their own yawn is ________.
A. a sign stimulus; a fixed action pattern B. reflex response; learned behavior C. an association; a conditioned response D. innate behavior; habituation
Individuals can become HIV infected from "deep kissing" especially when both individuals have open mouth sores or bleeding gums.
a. true b. false