Answer:
Angiosperms have seeds with an 3n endosperm due to double fertilization.
Explanation:
- Double fertilization is found only in flowering plants.
- In angiosperms, the female gametophyte does not grow after reaching eight nucleate stage.
- After fertilization and triple fusion, the zygote and primary endosperm are created and further growth of embryo sac continues.
- Triple fusion is the fusion of two haploid polar nuclei of female gametophyte and one male nuclei. This results in a 3n nucleus.
- The developing embryo obtains nutrition from the endosperm.
- If fertilization fails no endosperm is formed.
Answer:
D
Explanation:
I just did this and it was D
Cells have thousands of enzymes to act as biological catalysts.
<span>It is usually the + strand and the - strand. It can be quite a bit more complicated.</span>
When you spin around, you lose balance because of fluid spinning around in the C) semicircular canals.
