Which of the following events does NOT occur in
prophase II but does occur in prophase I?
a. crossing over
b. pairing of homologues
c. spindle formation
d. crossing over and pairing of homologues only
e. crossing over, pairing of homologues, and
spindle formation
Answer: d
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Water potential (?) can be thought of as the tendency for water to move from one place to another. In plants, it is made up mainly of solute potential and pressure potential
Hypothetical plant cells A and B are adjacent to each other. The solute potential (?S) of cell A is -0.35 MPa, and its pressure potential (?P) is +0.15 MPa. The solute potential (?S) of cell B is -0.30 MPa, and its pressure potential (?P) is +0.05 MPa. In which direction will net water movement occur? A) Neither; cells A and B are in equilibrium with each other. B) from cell A to cell B C) from cell B to cell A
This phylum of nonvascular plants has about 100 known living species. They produce hornlike
sporophytes, and they are the only land plants whose chloroplasts contain alga-like protein bodies called pyrenoids.
a. Hepatophyta b. Pterophyta c. Bryophyta d. Lycophyta e. Anthocerophyta
Which organelles contain DNA?
a. lysosomes and ribosomes b. lysosomes and mitochondria c. chloroplasts and mitochondria d. chloroplasts and ribosomes