<span>Animals have centrioles to form spindle fibers during prophase. The centriole divides cells. Plants do not have them because they have microtubules instead; they do not need centrioles. Plants are capable of forming a circular loop of microtubules around the future plane of division prior to prophase called the preprophase band, rather than centrosome. Basically- plants don't need it. They have a different way of cell division.</span>
The concentration of CO2 would drastically increase.
Answer:
<em>It is a constant when the light is traveling in a vacuum.</em>
Explanation:
If two homozygous plants with contrasting traits are crossed, the
expected genotypes for the offspring will be heterozygous. The
dominant trait would be expressed, but they'd be carriers for the
recessive trait.
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