Varfor har elodea ingen stomata

Why are cutin stomata and guard cells absent in elodea? Cutin, stomata and guard cells are used for water loss prevention. These are not needed because Elodea is a water plant. 1 2 According to the book Stomatal function (Zeiger et al, 1987), many aquatic angiosperm plants have stomata (since they have evolved from terrestial plants), while some have reduced or complete loss of stomata. 3 4 Elodea is a genus of 6 species of aquatic plants often called the waterweeds described as a genus in 1803. Classified in the frog’s-bit family (Hydrocharitaceae), Elodea is native to the Americas and is also widely used as aquarium vegetation and laboratory demonstrations of cellular. 5 Brazilian elodea (Egeria densa; formerly Elodea densa) and Canadian waterweed are commonly used in schools as an experimental plant for demonstrating cellular structures, such as chloroplasts and nuclei, and oxygen production during photosynthesis. 6 Elodea are aquatic plants that grow in water that do not have stomata. Why may this be? A. Because Elodea live in water, they do not need the excess structural material (cellulose) found in stomata. B. Stomata are adaptations of land plants to conserve oxygen in areas where the concentration of oxygen in the air is less than that in the leaf. 7 8 in strong dilution increases the protoplasmic viscosity of Elodea. 9 Forandringar i vattentemperatur kan sannolikt paverka pa manga satt och vi har darfor inget forslag pa specialisering for att fanga upp just dessa effekter, men. 10