Chapter 22, Problem 15A

Summary Introduction

Introduction :

Plants have many different tissues with specific function in different parts. They function together to provide food production and storage; give flexibility, support, and strength to the plants. The plant tissue includess meristematic tissue that involve in producing new cells throughout the lives of a plant, dermal tissue that is also considered as epidermis, it forms cuticles that help to reduce loss of water. Trichomes are the epidermal cells that are hairlike and produce in leaves and stems. It gives the leaves and stems a fuzzy appearance to provide protection against predators, it is also involved in maintaining the optimal temperature keep it cool. Root hairs are other epidermal cells that found in roots, this involve in the increasing the surface area of roots. The next is the vascular tissue involve in the transportation of nutrients, water, and other substances in plants. All the tissues are found in different parts of plants like roots, stems, and leaves.

Explanation of Solution

The leaves of plants are involved in photosynthesis and the structures of the leaves are such that it is well adapt to this function. The leaves have a flattened area that is termed as blade, it involves in providing the large surface area. The blades of the leaves are attached to the stem with the help of a stalk that is termed as petiole. This is a vascular tissue that connects the vascular tissue of stem and leaf. The leaves are consisting of hairlike epidermal cells that are termed as trichome. It gives the leaves a fuzzy appearance to provide transpiration and protection against predators, it is also involved in maintaining the optimal temperature keep it cool.

Conclusion

The blades of the leaves are attached to the stem with the help of a stalk that is termed as petiole. This is a vascular tissue that connects the vascular tissue of stem and leaf. The leaves show transpiration due to the presence of trichome.