While playing soccer in your backyard, you disrupt a small fire ant mound. The fire ants emerge and bite your feet. Your feet begin to show swollen, raised areas around the bites. What is happening?
A) Your innate internal defenses have been activated.
B) Your adaptive defenses have been activated.
C) Blood flow to the affected area decreases.
D) You are experiencing passive immunity.
Answer: A
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How do pathogens enter into plant tissues?
A. through wounds or damaged tissues B. through the stomata C. by secreting enzymes that weaken epidermal cells D. on the piercing mouthparts of insects feeding on the plants E. All the answer options are possible means to enter plant tissues.
Epiphytes are non-parasitic plants that grow on other plants
a. True b. False
Along with lipids, the skin of amniotes is filled with ____ to help prevent water loss
a. squalene b. bone c. keratin d. collagen e. albumin
A table listing such items as age, observed number of organisms alive each year, and life expectancy is known as a (an)
A) life table. B) mortality table. C) survivorship table. D) rate table. E) insurance table.