STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
MORPHOLOGY OF FLOWERING PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The seed in grasses is not endospermic
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Mango is a parthenocarpic fruit
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A proteinaceous aleurone layer is present in maize grain
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A sterile pistil is called a staminode
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Detailed explanation-1: -The endosperm is surrounded by one special thick layered cell which is known as aleurone layer. The layer is usually proteinaceous in nature. It provides nourishment to the plants. So, this is the correct option.
Detailed explanation-2: -Maize is a monoctyledonous endospermic seed. In monocotyledonous endospermic seed, endosperm is surrounded by a special one-cell thick layer, called aleurone layer. The cells of aleurone layer are filled with proteinaceous aleurone grains which play an important role at the time of germination.
Detailed explanation-3: -The layer of the endosperm of maize rich in protein is the aleurone layer. Outer covering of the endosperm separates the embryo by a proteinous layer called aleurone layer in monocots. A sheath called coleoptile and coleorhiza encloses the plumule and radicle of the maize seed, respectively.
Detailed explanation-4: -The aleurone layer in maize grain is specially rich in proteins. This protein rich layer is the outermost layer of the endopserm separating the endosperm from the embryo. The aleurone layer performs a variety of functions to help maintain proper development of the seed.