Table of Contents
- 1 How can a plant reduce water loss when the soil is very dry?
- 2 How do plants reduce the rate of transpiration?
- 3 How do rolled leaves reduce water loss?
- 4 Why do plants remove liquid water instead of water Vapours?
- 5 How is the structure of epidermal cell in the desert plants helpful in Minimising the water loss in them?
How can a plant reduce water loss when the soil is very dry?
But when limited water is available in the soil, plants try to prevent water loss. Water loss through transpiration can be reduced by closing the stomata in the leaves using a substance called ABA. When the stomata is closed photosynthesis will decrease because no CO2 can enter through the closed stomata.
How do plants reduce the rate of transpiration?
Some plants possess stomata that are sunken into the leaf surface, dramatically increasing the boundary layer and slowing transpiration. Boundary layers increase as leaf size increases, reducing rates of transpiration as well. The thicker the cuticle layer on a leaf surface, the slower the transpiration rate.
How does the rate of loss of water gets reduced in desert plants?
Cuticle is a protective, hydrophobia waxy covering produced by epidermal cells of leaves, young shoots and other aerial parts. It minimizes the water loss through transpiration (with the help of stomata) and also reduces pathogen entry.
What plant adaptation reduces water loss?
Leaf adaptations
| Adaptation | Explanation |
|---|---|
| Leaves reduced to spines | Reduces the surface area for transpiration |
| Reduced number of stomata | Reduces the transpiration rate |
| Waxy leaf cuticle | Impermeable to water, which stops evaporation |
How do rolled leaves reduce water loss?
Rolled leaves – rolling up leaves reduces the exposure of stomata to the air and hence reduces evaporative water loss. Thick, waxy cuticle – having leaves covered by a thickened cuticle prevents water loss from the leaf surface.
Why do plants remove liquid water instead of water Vapours?
Plant Benefits According to Sterling, the process of water turning into a vapor cools the plant. As water transpires and the roots replace it, the roots are also drawing in more nutrients from the soil. The presence of this water in the soil also provides support for the plant so that it does not fall over.
How do sunken stomata reduce transpiration?
The sunken stomata creates a small pocket of moist air. The high humidity in the air pocket reduces the water potential gradient between the leaf air spaces and the exterior, and therefore decreases the rate of transpiration.
Which part of the leaf controls water loss?
Stomata
Stomata. Stomata are tiny holes found in the underside of leaves. They control water loss and gas exchange by opening and closing. They allow water vapour and oxygen out of the leaf and carbon dioxide into the leaf.
How is the structure of epidermal cell in the desert plants helpful in Minimising the water loss in them?
Answer: Small pores, called stomata, are present on the leaf, and help in the exchange of gases and water. Epidermal cells on the aerial parts of the plant secrete a waxy, water-resistant layer on their outer surface. In desert plants, epidermis has a thick waxy coating of cutin, to check water loss.