This group is one of the two main angiosperm clades. This group has about 200 000 species, and most have two cotyledons. What is the name of this plant group?
a. eudicots
b. monocots
c. magnoliids
d. orchids
Ans: a. eudicots
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Which of the following results from a transfer of electron(s) between atoms (e.g., NaCl)?
A) Nonpolar covalent bond B) Polar covalent bond C) Ionic bond D) Hydrogen bond E) Electron-proton interaction
Which of the following statements is incorrect with regard to xylem tissue?
A) Vessel elements contain pits. B) Water and minerals are transported by xylem. C) Xylem is composed of tracheids and vessel elements. D) Xylem cells are dead at maturity. E) Companion cells provide nutrition for tracheids.
The progesterone receptor (PR) is a steroid hormone receptor and transcription factor. The protein SRC-1, which does not bind DNA by itself, can bind to PR and increase expression of genes regulated by PR. Based on this information, SRC-1 is best described as a(n)
A. inducer. B. general transcription factor. C. specific transcription factor. D. coactivator.
Edible true mushrooms are typically members of the (Ascomycota/Basidiomycota/Deuteromycetes/Zygomycota).
Fill in the blank(s) with the appropriate word(s).