Question

respond to the following based on your reading. question 1 explain, in your own words, the role of cohesion and adhesion in plant transpiration. question 2 what are several adaptations that leaves have undergone? why do leaves have adaptations in different parts of the world?

Explanation:

For Question 1: Cohesion is the attraction between water - water molecules. In plant transpiration, it creates a continuous water column in xylem vessels. Adhesion is the attraction between water and xylem cell walls. It helps water adhere to the walls and move upwards against gravity. Together, they enable the upward movement of water from roots to leaves during transpiration.
For Question 2: Leaves have adaptations like different shapes (e.g., needle - shaped in conifers to reduce water loss), different surface textures (e.g., waxy cuticles to prevent water loss), and different arrangements. Leaves have adaptations in different parts of the world because of varying environmental conditions such as temperature, humidity, light availability, and water availability. These adaptations help leaves carry out photosynthesis and minimize water loss in their specific habitats.

Answer:

Question 1: Cohesion creates a continuous water column in xylem, adhesion helps water adhere to xylem walls and move upwards, enabling upward water movement during transpiration.
Question 2: Adaptations include different shapes, textures, and arrangements. Leaves adapt due to varying environmental conditions like temperature, humidity, light, and water availability to carry out photosynthesis and minimize water loss.