A mature maple tree can have a mass of one ton or more (dry biomass, after removing the water), yet it starts from a seed that weighs less than one gram. Which of the following processes contributes the most to this huge increase in biomass?
What will be an ideal response?
Incorporation of CO2 gas from the atmosphere into molecules by the leaves
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Which of the following statements about swallowing is false?
A. It is a series of voluntary motions of the roof of the mouth, tongue, and epiglottis. B. It is under the control of the autonomic nervous system. C. It conveys food from the pharynx through the esophagus and into the stomach. D. The tongue pushes a bolus of food to the rear of the mouth cavity to initiate swallowing. E. None of these statements about swallowing is false.
Your friend has a dog Rex that she feeds every night immediately after she gets up from the dinner table. You are dog-sitting one weekend and you decide to keep Rex at your house rather than leave him alone in hers. After you eat dinner and get up to clear the table, Rex starts salivating profusely and runs to his food bowl. Rex's behavior is an example of:
A. a conditioned response. B. an automatic reflex. C. an irrelevant response. D. the anticipatory response. E. permanent conditioning.
If a population of allopolyploids were to evolve in an area, what are possible outcomes for this new species? What will be an ideal response?
Which of the following is true about an antigenic shift?
A. It avoids genetic reassortment. B. It causes major changes in the flu virus. C. All of the answers are correct. D. It causes minor changes in the flu virus. E. It doesn't cause any changes in the flu virus.