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Yogita Ingle 7 years, 8 months ago
Bulliform cells are the cell distributed between the epidermal cells of the leaf. They are responsible for storage of water. Bulliform cells help in rolling of leaves to prevent loss of water through transpiration during stress conditions. Hence they regulate transpiration process. They also unroll the leaves during favourable conditions. Bulliform cells are mainly found in grasses.
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Yogita Ingle 7 years, 8 months ago
The cell walls of diatoms are made of silica. Their cell wall construction is known as frustule. It consists of two thin overlapping shells that fit into each other such as a soap box. When the diatoms die, the silica in their cell walls gets deposited in the form of diatomaceous earth. This diatomaceous earth is very soft and quite inert. It is used in filtration of oils, sugars, and for other industrial purposes.
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Yogita Ingle 7 years, 8 months ago
Flowering plants are called as angiosperms. The flowering plants are the most dominant vascular plants that are found in the fauna all around the world. The pleasing and attractive colours of their flowers certainly add much more colour and brighten the landscape of any place.
Classification of Angiosperms
Based on the types of cotyledon present, angiosperms are divided into two classes. They are monocotyledons and dicotyledons. The dicotyledonous angiosperms have two cotyledons in their seeds and the monocotyledonous angiosperms have one cotyledon.
Monocotyledonous plants: The monocots have some distinct features that include the presence of adventitious roots, simple leaves with parallel venation, and trimerous flowers. The number of vascular bundles is more and is closed. Some of the examples include bamboos, sugarcane plants, banana, cereals, lilies etc.
Dicotyledonous plants: The dicotyledonous plants have two cotyledons with a tap root system. The venation seen in the leaves is reticulate. Flowers can be tetramerous or pentamerous. Vascular bundles are generally arranged in a ring and number between two to six. Examples include Grapes, Dandelions, Sunflower, Tomatoes, and Potatoes etc.
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Yogita Ingle 7 years, 8 months ago
Ammonification: The process of the production of ammonia from organic compounds is called ammonification. Ammonification is the process — carried out by a variety of microorganisms — that breaks down proteins, amino acids, and other nitrogen-containing compounds in dead and waste organic matter to form ammonia.
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