Correct Option: C

Plants produce new cells and grow only in their shoot and root apical meristems and leaf primordia; this is localized growth. In contrast, all parts of an animal's body grow (diffuse growth). From the time we are embroys until we are about 18 years old, all parts of our body grow simultaneously. Due to a plant's localized growth, an individual plant can have older, completely mature and highly functional leaves at the same time that it is still producing new leaves.