Plants produce oxygen when they photosynthesize. Where does the oxygen come from?
What will be an ideal response?
splitting water molecules
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Which statement correctly describes horizontal gene transfer?
a. Conjugation, transformation and transduction are all forms of horizontal gene transfer. b. Conjugation and transformation are forms of horizontal gene transfer, but transduction is a form of vertical gene transfer. c. Eukaryote-eukaryote transfers of nuclear genes are most common. d. Prokaryote-eukaryote transfers of nuclear genes are most common. e. Partial diploids always result from horizontal gene transfer.
Explain the difference between homosporous and heterosporous plants
What will be an ideal response?
Melatonin is produced by the pineal gland
____________________ Indicate whether the statement is true or false.
Which term refers to a flower that lacks either stamens or carpels?
a. perfect b. imperfect c. incomplete d. complete