Answer:
b. Vernalization
Explanation:
Vernalization is a phenomenon in which plants require low temperature for the flowering. There is either qualitatively or quantitatively dependent on exposure to very low temperature. This process is known as vernalization. Vernalization defines especially to the promotion of flowering by a period of low climate. For example; Vernalisation occurs in biennial plants. Biennials are monocarpic plants which normally flower and may die in the second season. Some common examples of biennials are carrots, Sugarbeet, cabbages, etc.
A- Flatworms are unsegmented and only have one mouth/anus opening. And they are obviously flat
The main purpose of the organ system shown in the provided diagram is that it <span>provides support for the body and protects delicate internal organs.</span>
