Question

What is transpiration in the water cycle?

Answer 1

Hint: Water is an inevitable need in our daily life. Water cycle is the phenomenon which exhibits the movement of water from place to place. There are different water sources on our planet namely, oceans, seas, rivers, lakes, ponds etc. Water evaporated from plants is also a contribution to the water cycle.

Complete answer:
Transportation of water and food is considered important for the growth of plants. Plants mainly get their water from the soil which is absorbed with the help of roots. The absorbed water reaches other parts of the plant through vascular xylem present in the cells. Water from the leaves in the form of vapor is released to the atmosphere. This process is known as transpiration. Transpiration occurs with the help of stomata. Stomata are tiny pores present on the surface of the leaves. Guard cells are in-charge of opening and closure of stomata.

Transpiration is essential in the water cycle as it acts as an important source. About $10\% $ of water is contributed to the water cycle by transpiration of plants.

Additional information:
Water cycle, also known as hydrological cycle, is a biogeochemical cycle that aids in the regulation and maintenance of water on the planet. It includes evaporation of water from different water bodies, condensation of water in the form of clouds and precipitation in the form of rain and snow.

Note:
Plants contribute to the water cycle through the process of transpiration. The rate of transpiration is higher in the morning and lower at night because stomata opens mainly during the day time. Transpiration rate can be affected by temperature, humidity, wind movement and moisture content of the soil.