A biodiversity hotspot is a relatively large area that holds an unusually small number of species.
a. true
b. false
Ans: b. false
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Answer the following statements true (T) or false (F)
1. Plant behavior is defined as response to stimuli. 2. Brassinosteroids produced by plants are closely related chemically to animal steroid hormones. 3. One reason auxins are called the "master plant hormones" is because they mostly work apart from other hormones. 4. One reason magnesium is important to plants is that it is part of the chlorophyll molecule.
In eukaryotes the DNA molecule that makes up a chromosome is typically ____ and usually has ____
replication origin.
a. circular; one b. circular; more than one c. linear; more than one d. linear; one e. linear; no
When an organism (such as a ground squirrel) becomes hypothermic, are ONLY the respiratory reactions likely to be affected, or would the overall metabolism of the organism be depressed?
a. only the respiratory reactions are likely to be affected b. the overall metabolism of the organism would be depressed c. there is little affect on any of the organism's systems
Under the influence of hormones, branch roots emerge from the ________ of a growing root
A) epidermis B) Casparian strip C) endodermis D) pericycle E) central cylinder