1. One type of organelle of plant produces food and another type of organelle has a role in the metabolism of fat and generates energy.
2. In practical class the teacher showed the students the characteristics of two types of plants. One type of plant has seeds which are naked and another type has enclosed seeds. Students observed the similarities and dissimilarities of both.
3. Artificial cultivation of dividing portion of the plants produce innumerable seedlings. In this process callus, rootless and rooted seedlings are produced from the ex-plant.