#Question id: 5686
#Unit 5. Developmental Biology
Following statements are regarding to double fertilization in angiosperms.
A. One sperm cell fuses with the egg cell to produce the zygote that will develop into the new embryonic plant.
B. The second sperm cell fuses with the usually binucleate central cell, giving rise to the
endosperm, the tissue that nourishes the developing embryo. This second event is not “true” fertilization in the sense of male and female gametes undergoing fusion.
C. The second sperm cell fuses with the usually binucleate central cell, giving rise to the
endosperm, the tissue that nourishes the developing embryo. This second event is “true” fertilization in the sense of male and female gametes undergoing fusion.
D. During fertilization in angiosperm, when the sperm cells are released, the egg undergoes a flux of Ca2+. Then, chemicals released from the egg appear to make the sperm competent for cell fusion.
Which of the following statements are true?
#Question id: 10914
#Unit 6. System Physiology – Plant
Early research on phloem loading focused on the apoplastic pathway, probably because it is very common in
#Question id: 11722
#Unit 6. System Physiology – Plant
The induction of GA-MYB and α-amylase mRNA by GA3, the
production of GA-MYB and α-amylase mRNA has shown in graph,
which of the following is the correct representation relation between these two
mRNA .
#Question id: 3060
#Unit 2. Cellular Organization
A bacteria having doubling time of 1 minute, fills a cylindrical vessel completely in 3 hours. How much time will it take to fill half of the vessel?
#Question id: 31287
#Unit 5. Developmental Biology