This group is one of the two main angiosperm clades. This plant group has about 60 000 species that are characterized by having a single cotyledon. What is the name of this plant group?
a. eudicots
b. orchids
c. monocots
d. water lilies
Answer: c. monocots
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While electron transport is occurring, the development of a(n) ________ is established by the directional pumping of protons across the inner membrane of the mitochondrion.
Fill in the blank(s) with the appropriate word(s).
What do enzyme-linked receptors and growth factor receptors have in common?
A. Both act as transcriptional factors. B. Both possess kinase activity when bound to a hormone. C. Both regulate the transport of ions through channels. D. Both regulate specific G proteins when bound to a hormone. E. Both seldom affect the expression of genes within the nucleus.
The process of producing NH4+ from decaying organic material is called ____
a. nitrification b. ammonification c. nitrogen cycling d. nitrogen fixation e. nitrogen assimilation
Every choice below EXCEPT __________ is a plant
hormone. a. IAA b. abscisic acid c. phytochrome d. cytokinin e. all are hormones