Why so little plants / vegetables?

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Dr Kevin Stock - Plant Defence Mechanisms.

Some seeds are covered in a protective hull which acts as a shelter. Others are naked. Naked seeds are exposed babies. They grow on grasses and vines and must use internal deterrents to prevent predators from eating them. Parent plants drop these seeds right where they grow, so that in the winter, when the parent plant dies off, the offspring can sprout right there in the same area.

Although these naked seeds seem bare and exposed on the outside, on the inside they are potent fighters armed with chemical warfare agents. A “healthy” spinach salad topped with tomatoes, oni