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