Which statement best describes the process of sexual reproduction?

a.
pollen is released with the aid of wind and water.

b.
a sperm cell fertilizes a vertebrate's egg cell, creating a zygote.

.

c.
a mushroom ejects spores into the air even in the harshest conditions.

d.
a regular house fly begins as a maggot after budding.

B.  A sperm cell fertilizes a vertebrate's egg cell, creating a zygote.

Explanation:

Not A, because it is showing asexual production, in which, when the pollen lands, it will grow without needing of an opposite gender.

Not C, because it is exactly the same as A, in which it promotes asexual production.

Not D, because while sexual reproduction is needed, it does not give the process, rather, the process of life after being borned (you want an answer that gives the process before birth.

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hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

blue

light-years

magnitude