![]() ![]() The seed looks like a baby sleeping in a cradle with a feeding bottle. On the contrary, the smallest seed is produced by orchids, which is as small as dust, weighing one-100,000th of a gram.Įach species is slightly different, but in general the seed is made up of the embryo that will become the plant body, the endosperm that retains the nutrients required for the seed germination, and the shell that protects the seed. As big as a basketball ball, it weighs 20 kg. It’s sometimes referred to as Seychelles nut. The biggest seed in the world is “coco de mer” (sea coconut) because it is washed up on the beach while floating on the sea. Then the flower soon withers, and the plant makes ready for producing seeds. When the pollen tube reaches the ovule, the nucleus of the pollen goes down the tube and reaches the ovule for fertilization. Unlike animals, immobile plants are helped by water, wind, insects, and birds to move their mature pollen to the stigma-the head of the pistil.Īlthough a pollen grain adheres to the stigma, it has still a long way to get to the ovule. How are solid seeds of plants made?įlowering plants, which are the most diverse species of plants, produce seeds when pollen reaches ovule. Whereas the oldest time capsule is less than 100 years old, a palm sprouted from a 2,000 year-old seed found in Israel. The first time capsule was buried at the New York World’s Fair 1939, and is to be opened 5,000 years later (in 6939).Īmong living things, there are time capsules that endure long suffering and put forth life: the seeds. A time capsule that keeps things along with memories is opened after a long time.
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