On the lower surface of the leaf are ( present numerous pores called stomata (singular : stoma), which open into small air cavities inside the leaf.
ExplanationOn the lower surface of the leaf are ( present numerous pores called stomata (singular : stoma), which open into small air cavities inside the leaf.
On the lower surface of the leaf are ( present numerous pores called stomata (singular : stoma), which open into small air cavities inside the leaf.