Identify the five main classes of echinoderms. List their characteristics and two representatives of each
class. What will be an ideal response?
See Table 32-1 on textbook page 678 for characteristics of classes of echinoderms
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The genetic switch for the infection pathways of lambda phage is controlled by two regulatory proteins: ________ and ________
A) lambda repressor, Cro B) lambda repressor, permease C) excisionase, integrase D) recA, Cro E) lyase, lysogenase
The voice box is also referred to as the:a
larynx. b. nasal cavity. c. epiglottis. d. pharynx. e. trachea
Nonnative plant invaders, such as the alfalfa plant bug, are extremely invasive and hard to control because
A. they arrive in new locations where natural predators are not present. B. their populations evolve faster than the plants they attack. C. they tap into the xylem of a plant while seeking carbohydrates. D. cause the plants' stomates to become unevenly distributed within the epidermis. E. they cause the plants' axillary buds to grow out.
Thigmotropism is a growth response to ____
a. light b. day length c. contact with a solid object d. circadian rhythms e. gravity