Where does photosynthesis take place in the leaf in the chloroplasts throughout the veins along the leaf blade between the xylem tissue
3. Cells in the mesophyll of the leaf have numerous chloroplasts. In leaves, cells in the mesophyll (the tissue between the upper and lower epidermis) are uniquely suited to carry out photosynthesis on a large scale. This is due to their high concentration of chloroplasts, which are the sites of photosynthesis.
Which is a morphological adaptation to reduce water loss from the leaf
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 many stomata are there in a leaf
The average number of stomata is about 300 per square mm of the leaf surface.
What do leaf hairs do
The hair layer increased leaf diffusion resistance to water loss, leading to a reduction in transpiration (E) and higher instantaneous water use efficiency of leaves with an intact hair layer at all light intensities measured.
What are the adaptations of plants to reduce water loss
Leaf adaptations
Adaptation | Explanation |
---|---|
Reduced number of stomata | Reduces the transpiration rate |
Waxy leaf cuticle | Impermeable to water, which stops evaporation |
Rolled leaves, leaf hairs, and stomata sunk in pits | Traps moist air, which increases the humidity and reduces the diffusion of water vapour |
What adaptation helps a plant reduce 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.Oct 23, 2017
What prevents water loss in leaves
Leaves are covered by a waxy cuticle on the outer surface that prevents the loss of water.May 4, 2022
Which structure prevents water loss in leaves
A waxy layer known as the cuticle covers the leaves of all plant species. The cuticle reduces the rate of water loss from the leaf surface. Other leaves may have small hairs (trichomes) on the leaf surface.May 27, 2022
Which adaptations help plants store water
Aloes are succulent plants, which have adaptations that allow them to store water in their enlarged fleshy leaves, stems, or roots. This allows them to survive in arid environments.Jul 3, 2019
Which of the following adaptation in plants helps to reduce the transpiration process
The maximum amount of transpiration happens through the stomata of leaves. So, in order to reduce the excessive transpiration, the size of stomata of leaves is reduced in some plants, or they are covered by thin hairs. This helps to block the pores and reduce the rate of transpiration.
Why are leaves hairy
Plants have small hairs on their leaves and stems called trichomes. These structures are important for defense from herbivory and protection from cold, heat and drought.Aug 10, 2013
How do hairs on leaves affect transpiration
Leaves that possess many hairs or pubescence will have larger boundary layers; the hairs serve as mini-wind breaks by increasing the layer of still air around the leaf surface and slowing transpiration rates.
How do leaf hairs reduce water loss
It creates a microclimate around the leaf. As water is lost from the leaf the microclimate becomes very humid. The hairs prevent this humid air from being blown away. As humidity slows down the rate of transpiration the leaf conserves water.
How do hairy leaves conserve water
Hairy leaves – minimise water loss by reducing air flow and creating a humid microclimate which reduces evaporation rate and the water potential gradient. Curled leaves – minimises water loss within a microenvironment with no air flow creating a humid microclimate reducing evaporation rate and water potential gradient.
What are the hairs on a leaf called
Plant hairs (botanically called trichomes) may be present on stems or leaves. They are prolonged epidermal cells; on a stem or leaf it may be living or dead, deciduous or persistent; on a root it is short-lived and confined to the absorbing zone, called a “root hair”. Leaves or stems without hairs are called glabrous.Jun 20, 2019
Do leaves have hair
Hairs on Leaves
The hairs present on the plant's leaves are a type of trichome. Trichomes are small, hair-like structures that cover the surface of many plants. They are found on both the upper and lower surfaces of leaves, stems, and flowers. Leaf hairs are used to reflect the sunlight on the plant's surface.
What prevents water loss in plants
The main ways vascular plants limit water loss include the cuticle, leaf hairs, stomata and mutualistic relationship between microorganisms. The cuticle is waxy and water repellent which keeps the water “locked” in the plant.
What helps plants survive in the desert
The leaves and stems of many desert plants have a thick, waxy covering. This waxy substance does not cover the stomata, but it covers most of the leaves, keeping the plants cooler and reducing evaporative loss. Small leaves on desert plants also help reduce moisture loss during transpiration.Nov 29, 2018