Final answer:
Plant cells specialized for continuous cell division are found at the tips of roots and shoots because of the presence of apical meristems which result in the greatest amount of growth in these regions.
Step-by-step explanation:
Plant cells that are specialized for continuous cell division are mostly found in the tips of roots and shoots because these regions undergo the greatest amount of growth compared to other tissues. This occurs through a process involving apical meristems, which are zones of mitotically active cells located at the root tip and shoot tip. The cells in the apical meristems are undifferentiated and continue to proliferate, facilitating primary growth which allows for elongation of the plant organ.
The primary growth originates from the division of cells within these meristems and is followed by cell elongation, contributing to the plant's ability to access new resources - light for shoots, and water and minerals for roots. Hence, option 'c. These regions undergo the greatest amount of growth compared to other tissues' is the correct answer to the question why plant cells specialized for continuous cell division are found in the tips of roots and shoots.