A seed is a _____
a. female gametophyte c. mature pollen grain
b. mature ovule d. modified microspore
B
You might also like to view...
What is an example of basic research?
a. Developing a new diagnostic test b. Synthesizing proteins for treating disease c. Manufacturing a vaccine d. Developing a new drug to treat diabetes e. Learning how plants turn carbon dioxide into sugar
A new drug is developed thatinhibits formation of the flagellar filament by impairing production of the protein flagellin. Is this going to be a good drug?
A. Potentially-it would definitely only impair bacteria, but wouldn't matter for the ones that don't use a flagellum to move around. B. Potentially-if it could be shown that it also didn't impair the production of the eukaryotic flagellum. C. No-our eukaryotic cells depend on flagella to move around in our body, and this would impair that function. D. No-bacterial flagella are produced using microtubules, not the protein flagellin. This drug would be useless in eliminating bacteria.
Unlike pinnipeds, sirenians are completely free from the terrestrial environment
Indicate whether the statement is true or false
Male songbirds sing to attract females to mate
with. Different species of male songbirds sing different songs that will attract only the females of their species. This is an example of ___ isolation.
a. temporal b. ecological c. behavioral d. mechanical e. genetic