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.
Fern is a vascular, seedless plant that belongs to the group Pteridophyta. There are around 12 000 types of ferns that differ in size, morphology and type of habitat.Ferns can be found throughout the world. They live in shady places that provide enough moisture, such as forests, fields, swamps and areas near the streams. Fern can survive in various climates and on different altitudes.ern is a vascular, seedless plant that belongs to the group Pteridophyta. There are around 12 000 types of ferns that differ in size, morphology and type of habitat.