The sections of the light spectrum which the âredâ and âgreenâ cones perceive overlap and this is why red and green colour vision deficiencies are often known as red/green colour blindness and why people with red and green deficiencies see the world in a similar way.
Boston Fern The most common indoor fern, Boston ferns are long-lived plants that can reach more than 5 feet tall and wide at maturity (though indoors they rarely reach that size). Fern breeders have released a large number of varieties -- from selections with golden fronds to fantastically frilled fronds.
These two types of seed plants are further distinguished: Similar to bryophytes and the ferns and allies, the gymnosperms have no flowers. They are also described as plants with naked seeds because during pollination the ovule is not enclosed by the carpel except some kind of scales during development.imilar to bryophytes and the ferns and allies, the gymnosperms have no flowers. They are also described as plants with naked seeds because during pollination the ovule is not enclosed by the carpel except some kind of scales during development.