Plants: The Internal Structure of Dicot Stems

The video explains the internal structure of plant stems, focusing on dicots and monocots. It details the tissue layers in dicot stems, including the dermal, ground, and vascular tissues. The dermal layer consists of the epidermis, cortex, and endodermis, each with specific functions. Ground tissue provides structural support, while vascular tissues, phloem and xylem, transport nutrients and water. The pith, found in the center of dicot stems, stores and transports nutrients.

What is the primary function of the epidermis in plant stems?

• To provide structural support

• To waterproof and protect the stem

• To transport water

• To store nutrients

Which type of cells primarily make up the ground tissue in plant stems?

• Parenchyma cells

• Sclerenchyma cells

• Epidermal cells

• Xylem cells

What is the main role of phloem in plant stems?

• To transport nutrients

• To store food reserves

• To transport water

• To provide structural support

How do xylem cells contribute to the plant stem?

• By regulating gas exchange

• By providing structural support

• By transporting sugars

• By storing nutrients

What is the function of the pith in dicot stems?

• To transport water

• To store and transport nutrients

• To provide structural support

• To regulate hormone movement