Saliva contains salivary ____ an enzyme which begins the chemical breakdown of starch
Fill in the blank(s) with the appropriate word(s).
amylase
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In seed-bearing plants, what structure becomes the seed following fertilization?
A. The microsporangium. B. The pollen grain. C. The ovule. D. The endosperm. E. The sporophyte.
The basic unit in ecology is the
A) ecosystem. B) gene. C) individual. D) species.
Which of the following types of plants would most likely be found in the Mojave Desert?
A) C4 B) C3 C) CAM D) CAM, C3, and C4 would all be equally likely in this environment.
Males of many marsupial species have forked penises that are incompatible with the anatomy of female placental mammals. What type of isolating mechanism does this represent?
A. temporal isolation B. mechanical incompatibility C. ecological isolation D. hybrid sterility E. prevention of gamete fusion