A pollen grain is best described as
a. a spore with a male gametophyte inside.
b. a spore with a female gametophyte inside.
c. a gametophyte containing an egg.
d. a male sporophyte.
e. a female sporophyte.
A
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What feature in animals is analagous to plant
meristem cells?
a. ectoderm cells b. a gastrula c. blastocyst stem cells d. mesoderm cells e. none of these are analogous to plant meristem cells
A test cross is performed to determine if a specific individual is a carrier. The results generate a 50/50 ratio of phenotypes. The test subject is therefore ________
A) heterozygous B) homozygous dominant C) homozygous recessive D) heterozygous dominant
Which action is most similar to the way in which water is moved through the xylem sap of a plant?
A) a person drinking through a straw B) a vaccine being ejected out of a syringe C) water gushing up from a fountain D) a dart being blown out the end of a blowgun
The versatility of which atoms can be assembled into a wide variety of organic compounds?
A. Carbon B. Glucose C. Hydrocarbon D. Polymer E. Starch