Water comes out of the leaves in the form of vapour by a process called _______.

The correct answer is transpiration.Key Points

• Water comes out of the leaves in the form of vapour by a process called transpiration.
• Transpiration is the process of water movement through a plant and its evaporation from aerial parts, mainly from the leaves but also from stems and flowers.
• During transpiration, water is pulled up from the roots through the xylem vessels by the process of cohesion-tension, which creates a negative pressure gradient.
• As water molecules evaporate from the stomata (pores) of the leaves, they create a suction force that helps to pull more water up from the roots, maintaining the water flow.
• Transpiration serves several functions for plants, including cooling the leaves, providing water and nutrients to the cells, and facilitating the uptake of minerals from the soil.

Additional Information

• Creepers:
  • Creepers are plants that grow horizontally along the ground or other surfaces, using specialized structures called adventitious roots to anchor themselves.
  • Creepers do not have a direct role in water movement or transpiration.
• Transportation:
  • In the context of plants, transportation can refer to the movement of water, nutrients, and other substances through the xylem and phloem tissues, but it is not specific to transpiration.
• Venation:
  • Venation refers to the pattern of veins or vascular tissues in plant leaves, which can be either parallel or net-like.
  • Venation is important for plant growth and function, but it is not directly related to transpiration.