Pome

Pome [ Botany ]

Dictionary of botanic terminology - index of names


	A pome is a fleshy, accessory fruit (e.g. apple and pear )

It has a seed chambers typically containing five seeds: It is composed of five or more carpels in which the exocarp forms an inconspicuous layer, the mesocarp is usually fleshy, and the endocarp forms a leathery case around the seed. However, outside of the exocarp is the most edible part of this fruit, derived from the floral tube (hypanthium). (e.g. apple and pear ) The shrivelled sepals and stamens can be seen at the end of an apple opposite the stem.

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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