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Ø The aerenchyma is well developed in submerged plants. Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. Aerenchyma is found in – (a) Hydrophytes (b) Xerophytes (c) Halophytes (plants growing in salt) (d) In all plants asked Jun 15 in Plant Tissue - Internal Morphology and Anatomy by Kumkum01 ( 51.6k points) The diffused gases travel through the internal gas spaces of young leaves, then forced down to the root by the aerenchyma of the stem as a result of water pressure. The channels of air-filled cavities (see image to right) provide a low-resistance internal pathway for the exchange of gases such as oxygen and ethylene between the plant above the water and the submerged tissues. Aerenchyma is richly found in Hydrophytes. It is basically a sponge and very light tissue that forms air or spaces in stems, roots or leaves which then allows the exchange of various gases. Pneumatophores are found in-(A) Mesophyte plants (B) Xerophyte plants (C) Mangrove plants (D) In all the above plants Answer: C. Question 6. Aerenchyma. tap roots and widespread, shallow roots ... large surface area of stems and roots, air sacs, aerenchyma and pneumatophores. Ø Mechanical tissues are absent or poorly developed in hydrophytes. The sclerenchyma is either found in groups or in continuous sheets. Which of the following cells help sieve tubes to translocate food? Plants adapted to live in dry climates, e.g. Xerophytes are abundantly found in (b) d) b) (d) (c) (c) well developed root system aerenchyma tissue both leaf and stem surfaces are c vere Wit t cutice none of the above fats plains (a) minerals (d) coastal areas (a) valleys (b) deserts 6. 1 (a) xerophytes (b) mesophytes (c) halophytes (d) hydrophytes. which two places are xerophytes commonly found? Ø Thick walled sclerenchymatous cells totally absent in hydrophytes Learn how to say Xerophytes with EmmaSaying free pronunciation tutorials.http://www.emmasaying.com in sand and in frozen ground. Cacti and marram grass. Which one is a characteristic of xerophyte-(A) Aerenchyma (B) Large leaves (C) Sunken stomata (D) Poorly developed roots Answer: C. Question 7. Xerophytes. Aeriferous parenchyma or aerenchyma contains large intercelular empty spaces, larger than in other plant tissues. Many always-open stomata function. (C). 1 (a) Xylem parenchyma (b) Phloem parenchyma (c) Phloem fibre (d) Companion cell. The xerophytes commonly have a larger proportion of sclerenchyma in their leaf structure than is found normally in mesophytes. Very thin/no waxy cuticle function. Reduction of supporting or mechanical tissues. No need to conserve water. ... give examples of root adaptations in xerophytes. The large air filled cavity inside it provides the internal resistance and pathway for the flow of gasses. Roots are feebly developed and stem is soft with a … why do hydrophytes have a very thin or no waxy cuticle? Adaptations of xerophytes-thick, waxy, cuticle-sunken stomatal pits-fewer stomata ... -aerenchyma. This tissue is well-developed in plants living in wet or aquatic environments (these plants are known as hydrophytes), although it can be also found in non aquatic plants under stress. They are mainly found in aquatic and wetland plants. 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