Question

multiple cholce question
the result of double fertilization is a diploid zygote and triploid ______ tissue.
ovule
pollen grain
embryo
endosperm

Explanation:

Double fertilization in angiosperms involves one sperm fertilizing the egg to form a diploid zygote (which develops into the embryo), and the other sperm fusing with two polar nuclei to form a triploid endosperm nucleus. The endosperm nucleus develops into the endosperm tissue, which provides nutrients for the developing embryo.

• An ovule is a structure in the ovary that contains the female gametophyte (including the egg and polar nuclei), but it is not the triploid tissue formed by double fertilization.
• A pollen grain is the male gametophyte in angiosperms and is not related to the products of double fertilization in terms of being the triploid tissue.
• The embryo is developed from the diploid zygote (formed by the fertilization of the egg by one sperm), not the triploid product of double fertilization.

Answer:

endosperm