Is is necessary for dicot seeds to be symmetrical?
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Answer:
yes to form accurate symmetry such as linear tetrad tetrahedral
Answer:
Monocotyledons, also referred to as monocots, are flowering plants bearing seeds with a single cotyledon or embryonic leaf.
There are about 60,000 species of monocotyledonous plants found worldwide where the family Orchidaceae consisting of orchids forms the largest group in both monocots and in angiosperms with about 20,000 species.
The second most abundant monocotyledons include grasses in the family Poaceae which are the most economically important of them all.
Monocotyledon plants form the largest biomass within agriculture including most grains like wheat, rice, barley, along with forage grasses, sugarcane, and bamboos.
All monocots share a common evolutionary history, making it a monophyletic group.
The most common characteristic associated with monocotyledons is the presence of a single cotyledon in the embryo of the seed with parallel-veined leaves.
The leaves are more slender where they are sheathed at the base without any petiole. The veins move in a parallel pattern but are smaller in size with even smaller veins connecting them.
Besides, they have scattered vascular bundles in the stem with an adventitious root system with no cambium.
The lack of lateral meristem or cambium limits the growth of stems in diameter with height. As a result, most monocotyledons are herbaceous plants with some arboraceous plants like agaves, palms, and bamboos.
Typically, monocots have an epidermis with thick cuticle, but they lack epidermal hairs. The cells in the epidermis or the hypodermis are not arranged in concentric circles
The flowers are also different from dicots in that the parts of the flowers usually occur in the set of three.
Commonly, the number of petals and sepals is either three of multiple of three, whereas the pistil and stamen can be numerous. There are six stamens that represent two whorls of three.
Sometimes, there might be a single ovary with two carpels instead of three.
The pollen grains in monocots characteristically have a single furrow or aperture in contrast to other angiosperms.
The resulting embryo has a single embryonic leaf almost always with an endosperm.
Most common and economically important monocots include plants like bananas, gingers, turmeric, cardamom, asparagus, along with some household plants like epiphytes and decorative flowers like lilies and tulips.
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