Which of the following forms of reproduction represent asexual and which represent sexual reproduction? A. Amphimixis: B. Automixis: C. Apomixis:
What will be an ideal response?
ANS:
A is sexual; B and C are asexual
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In plants, most chloroplasts are inherited from the maternal plant because maternal gametes contribute the most __________ to the zygote.
A. cytoplasm B. mitochondria C. ribosomes D. chlorophyll E. cytoplasm and mitochondria
The phosphate transport system in bacteria imports phosphate into the cell even when the concentration of phosphate outside the cell is much lower than the cytoplasmic phosphate concentration
Phosphate import depends on a pH gradient across the membrane—more acidic outside the cell than inside the cell. Phosphate transport is an example of _____. A) passive diffusion B) facilitated diffusion C) active transport D) cotransport
Heart-shaped gametophytes produce swimming sperm; leaves of sporophytes develop from fiddleheads.
a. Mosses b. Ferns c. Conifers d. Gingkos e. Angiosperms
Dental caries are the most common human disease.
Answer the following statement true (T) or false (F)