Openings found on the under surface of the dorsiventral leaf are Stomata. Plants found in deserts are well adapted to cope with harsh desert conditions such as water scarcity and scorching heat. The stomata are also sunken i.e., located in depressions. Nerium sp. The depressions also have numerous hairs. Solution: Conifers have a number of xerophytic characters such as needle-like (e.g., Pinus), scale-like (e.g., Thuja) or small and leathery leaves (e.g., Araucaria), thick cuticle, sderenchymatous hypodermis and sunken stomata to reduce transpiration. The stomata are restricted to lower surface only. True & False. Xerophytes are the plants growing in water scarcity. Sunken stomata to reduce water loss. Spongy parenchyma and palisade parenchyma are present. Hypodermis is made of a T-shaped group of sclerenchyma in the ridges. On leaves, the cuticle is 1/10 to 14 micrometers thick. Stomata are … All of these are xerophytic characters. Thick cuticle on leaves. ... use the cuticle in tandem with their stomata to conserve water. Cortex: It is divisible into three parts; hypodermis, palisade and parenchyma. The cuticle is located outside the epidermis and protects against water loss; trichomes discourage predation. Mention, if the following statements are True or False.
IV. Explanation: Xerophytes are the plants growing in water scarcity.
III. These plants show a number of adaptations to conserve water, like presence of thick cuticle layer, reduction in size of leaves to scales or spines, multilayered epidermis and sunken stomata in leaves. These are covered with hairs. Sunken stomata All the following are adaptations in desert plants to minimize water loss except: 1. Presence of myrosin cells, which are laticiferous cells, in the hypodermal region is another characteristic feature (see Fig. In Capparis aphylla stem, the epidermis is covered with a thick cuticle. A thick cuticle is present in the outer surface of the epidermal cells. In Nerium, the stomata are present in Sunken pits. Sunken stomata are present. 5. Reduces Water Loss. 2.23).
II. These plants show a number of adaptations to conserve water, like presence of thick cuticle layer, reduction in size of leaves to scales or spines, multilayered epidermis and sunken stomata in leaves. Thick cuticle is present in the epidermal layer. ), sclerenchymatous and several layered hypodermis (e.g. Pinus sp.) 6. Thick cuticle 2. Guttation takes place generally at Night. CAM pathway 4. They bear thick cuticles and sunken stomata on the surface of their leaves to reduce transpiration. Leaves of Nerium are characterised by multilayered epidermis and a thick layer of cuticle. Sunken stomata are present in the grooves. Aloe sp.).
I. Needle - like leaves to reduce surface area. Sunken stomata are present in the epidermis. Multilayered epidermis (e.g. are present. Plants have an extensive root system to tap underground water. 8. C 3 photosynthesis 3. The epidermis consists of the upper and lower epidermis; it aids in the regulation of gas exchange via stomata. The leaves of the Xerophytic plants have cuticular wax. The epidermis is one layer thick, but may have more layers to prevent transpiration. This organization is to protect the stomata, which can show peripheral photosynthetic tissue and central water storage issue (diagrammatic); B, a portion (detailed) showing thick cuticle, thickenings on the radial and outer walls of the epidermal cells and sunken stomata exist in furrows. … Leaves are succulent (e.g. 7. Which of the following are correct for conifers ? Mesophyll is well differentiated. Stomata on the under surface of the epidermal layer sunken i.e., located in depressions a thick is. 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