Monomorphic

(1) Monomorphism [ Biology - Morphology ]	Dictionary of botanic terminology index of names
Adjective: Monomorphic


	*Of the same shape, having only a single form.*

In Biology the term monomorphic describe a species in which the two sexes are phenotypically indistinguishable, with the absence of sexual dimorphism or of genetic polymorphism. The presence of more than two distinct forms within the same species is called polymorphism.

(2) Monomorphic [ Botany ]


	In botany monomorphic means the presence of plant organs or parts having only a single form.

For example: a cactus with monomorphic areoles have all areoles (regardless if reproductive or vegetative) of the same shape and and located in the same position on the tubercles (c.f. dimorphic)

Advertising

Holdfast roots [ Botany ]
Dictionary of botanic terminology - index of names

Some species of climbing plants develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place.

Climbing plants, like the poison ivy (Toxicodendron radicans), Boston ivy (Parthenocissus tricuspidata), and trumpet creeper (Campsis radicans), develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place. Usually the Holdfast roots die at the end of the first season, but in some species they are perennial. In the tropics some of the large climbing plants have hold-fast roots by which they attach themselves, and long, cord-like roots that extend downward through the air and may lengthen and branch for several years until they strike the soil and become absorbent roots.

Major references and further lectures:
1) E. N. Transeau “General Botany” Discovery Publishing House, 1994