1) Why is "triploid" an appropriate description of the endosperm nucleus? 2) Is the zygote haploid, diploid, or triploid? 3) What is the developmental fate of the primary endosperm nucleus? 4) Of the zygote? 5) What is function of the endosperm?

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.