What is the structure of the leaf and the functions of the tissues in the leaf?
Structure of a leaf The cuticle helps retain water inside the leaf cells. The epidermis houses the guard cells which regulate the movement of water into and outside the cell. Guard cells do so by controlling the size of the pores also called stomata. Mesophyll: This forms the middle layer of the leaf.
What is the function of the tissue inside of the leaf?
Dermal tissue covers and protects the plant, and controls gas exchange and water absorption (in roots). Dermal tissue of the stems and leaves is covered by a waxy cuticle that prevents evaporative water loss. Stomata are specialized pores that allow gas exchange through holes in the cuticle.
What are the 4 functions of a leaf?
Answer:
- Photosynthesis.
- transpiration.
- guttation.
- storage.
Is a leaf a tissue or an organ?
A leaf is an organ. Leaves are the main photosynthetic organs of plants and are filled with palisade cells that have the chloroplasts needed for…
What is the structure of a leaf that relates to photosynthesis?
In leaves, cells in the mesophyll (the tissue between the upper and lower epidermis) are uniquely suited to carry out photosynthesis on a large scale. This is due to their high concentration of chloroplasts, which are the sites of photosynthesis. More chloroplasts means more photosynthetic capability.
How does the leaf structure help photosynthesis?
Leaves have a large surface area so more light hits them. The upper epidermis of the leaf is transparent, allowing light to enter the leaf. The palisade cells contain many chloroplasts which allow light to be converted into energy by the leaf.
What are the two functions of a leaf?
The two main functions performed by the leaf are photosynthesis and transpiration. Photosynthesis is the process by which green plants make their food from carbon dioxide and water in the presence of sunlight.
What is the leaf structure?
Typically, a leaf consists of a broad expanded blade (the lamina), attached to the plant stem by a stalklike petiole. In angiosperms leaves commonly have a pair of structures known as stipules, which are located on each side of the leaf base and may resemble scales, spines, glands, or leaflike structures.
What are the tissues in a leaf?
The leaf is a collection of tissues which include: The epidermis which covers the upper and lower surfaces. The mesophyll inside the leaf which is rich in chloroplasts. The veins contains the vascular tissue (where xylem and phloem are present).
What is the structure of leaf?
Each leaf typically has a leaf blade ( lamina ), stipules, a midrib, and a margin. Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves.
What leaf structure is related to both photosynthesis and transpiration?
Stomata, through which CO2 and water vapor diffuse into and out of the leaf, are involved in the regulation and control of photosynthetic and transpiration responses (Jarvis and Morison, 1981; Farquhar and Sharkey, 1982).