Moths visit night-blooming cereus flowers in the evening and pass pollen from one flower to another while collecting nectar.Once in contact with a stigma, these pollen grains germinate into tubes and extend through the maternal sporophyte tissue to the female gametophyte, where two sperm cells are released.Which statement accurately describes the process that ensues once the sperm cells meet the female gametophyte?
A) Once the sperm and egg nucleus fuse, pollination occurs and a zygote forms.
B) Once one of the sperm nuclei and the egg nucleus fuse, fertilization occurs and the second sperm cell degenerates.
C) Once the pollen tube reaches the female gametophyte, one of the sperm cells fertilizes the egg, and the other fertilizes the polar nuclei.
D) Once the pollen tube reaches the female gametophyte, one of the sperm cells fertilizes the egg, and the other pollinates the polar nuclei.
E) Once the pollen tube reaches the female gametophyte, one of the sperm cells pollinates the egg, and the other fertilizes the polar nuclei.
Correct Answer:
Verified
Q197: Which statement about flowers is false?
A) A
Q198: Refer to the figure. Q199: A flower whose parts originate from a Q200: With regard to flowering plants, which statement Q201: Fruit helps flowering plants Q203: California's almond trees are predominantly pollinated by Q204: The two largest groups of living angiosperms Q205: An accessory fruit includes not only the Q206: Which of the following is not an Q207: What part of the embryo is both![]()
A) remove competition.
B) store
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents