Within a gymnosperm megasporangium, the following developmental sequences that are correct, assuming fertilization occurs is: megaspore, female gametophyte, egg cell, sporophyte embryo. The last Option (Option D) is correct.
In gymnosperm megasporangium, the meiotic division produces four haploid megaspores from a single cell, three of which generally degenerate. The female gametophyte is formed by mitosis from the surviving megaspore.
Prior to fertilization, the male mature gametophyte needs to be transferred to the female gametophyte for fertilization to take place.
When the nuclei of the sperm encounter the nucleus of the egg cell in gymnosperms, it fuses with the egg nucleus to produce a diploid zygote.
Mitosis occurs in the fertilized egg to initiate the growth of a new sporophyte generation (the multicellular embryo of the seed.)
Therefore, we can conclude that we've understood the mechanism of developmental sequence in the gymnosperm megasporangium.
Learn more about the gymnosperm here:
brainly.com/question/4526473?referrer=searchResults
The answer is pelvic outlet. It is because if this is not
large enough and it is small, the baby won’t be able to be carried or delivered
out from the woman’s vagina as it won’t fit the baby and will likely lead to
complications if pushed through.
The amount of sleep you get is the independent variable because it does not depend on the scores on tests
Answer:
D Jupiter
Explanation:
it is the largest planet and takes longer the spin on its axis
