The following points highlight the three important theories of water translocation. The theories are: 1. Capillarity 2. Root Pressure 3. Cohesion Theory. Water Translocation: Theory # 1. Capillarity: Question arises, can the water be raised to the top of such trees by capillarity? Such a rise of water in small tubes comes about because of the adhesion between water molecules [...]
In this article we will discuss about the relationship between transpiration and absorption. Object: Demonstration of Relation between Transpiration and Absorption Requirements: A bottle with a side, tube, cork, a plant, oil, balance, etc. Experiment: Here, the apparatus must be completely filled up with water and air-tight. In the side marked tube of the apparatus some oil drops are being [...]
In this article we will discuss about the stomatal mechanism in plant cells. The stomata are very minute apertures, usually found on the epidermis of the leaves. Each stoma is surrounded by two kidney-shaped special epidermal cells, known as guard cells. The stomata may be found in all the aerial parts of the plant. They are never found on its [...]