Which two properties of water enable water to flow up from roots to feed plants?
a. Cohesion and adhesion
b. Adhesion and polarity
c. Polarity and cohesion
d. Solvency and temperature control
a. Cohesion and adhesion
Cohesion and adhesion enable water to flow up from roots to feed plants
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Which of the following correctly describes the fate of the embryonic germ layers?
A. The endoderm forms the gut, the ectoderm forms the epidermis and parts of the nervous system, and the mesoderm forms muscles and most internal organs. B. The endoderm forms the gut, the ectoderm forms the reproductive tract and endocrine system, and the mesoderm forms muscles and most internal organs. C. The endoderm forms the inner part of all internal organs, the mesoderm forms the middle parts, and the ectoderm forms the outer coverings. D. The layers are sequential structures that all disappear during development, with the endoderm appearing first and then is replaced by the mesoderm, which in turn is supplanted by the ectoderm. E. The endoderm is an embryonic structure that disappears early, whereas the ectoderm persists as the skin and the mesoderm as the internal organs.
Recombination frequency differs between males and females. Which sex has a higher rate of recombination, heterogametic (males) or homogametic (females)?
What will be an ideal response?
In addition to killing cancer cells, radiation therapy results in the death of normal cells. However, unlike cancer cells, normal cells recover from exposure to the radiation more readily
Indicate whether the statement is true or false
Most of our food crops come from angiosperms
Indicate whether the statement is true or false