| plant RNase | <enzyme> An enzyme endonucleolytically cleaving RNA to 3'-nucleotides with 2',3'-cyclic nucleotides as intermediates. Synonym: Escherichia coli RNase I, microbial RNase II, plant RNase, RNase N2. (05 Mar 2000) |
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| plant root cap | A cone-shaped structure in plants made up of a mass of meristematic cells that covers and protects the tip of a growing root. It is the putative site of gravity sensing in plant roots. (12 Dec 1998) |
| plant roots | The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (12 Dec 1998) |
| plant shoots | The aerial portions of a plant, including stem, branches, and leaves and also, new immature growth on a plant. (12 Dec 1998) |
| plant stems | Parts of plants that usually grow vertically upwards towards the light and support the leaves, buds, and reproductive structures. (12 Dec 1998) |
| plant succession | <botany> The development of a plant community from its initial stage to its climax stage. (31 Dec 1997) |
| plant toxin | A substance similar in its properties to an extracellular bacterial toxin. Synonym: plant toxin. Origin: phyto-+ G. Toxikon, poison (05 Mar 2000) |
| plant transpiration | The loss of water vapor by plants to the atmosphere. It occurs mainly from the leaves through pores (stomata) whose primary function is gas exchange. The water is replaced by a continuous column of water moving upwards from the roots within the xylem vessels. (12 Dec 1998) |
| plant tumours | A localised proliferation of plant tissue forming a swelling or outgrowth, commonly with a characteristic shape and unlike any organ of the normal plant. Plant tumours or galls usually form in response to the action of a pathogen or a pest. (12 Dec 1998) |
| plant viruses | Viruses parasitic on plants higher than bacteria. (12 Dec 1998) |
| plant-cane | A stalk or shoot of sugar cane of the first growth from the cutting. The growth of the second and following years is of inferior quality, and is called rattoon. Source: Websters Dictionary (01 Mar 1998) |
| plant-eating | Eating, or subsisting on, plants; as, a plant-eating beetle. Source: Websters Dictionary (01 Mar 1998) |
| planta | Synonym: sole. Origin: L. (05 Mar 2000) |
| planta pedis | The inferior aspect or bottom of the foot, much of which is in contact with the ground when standing; it is covered with hairless, usually nonpigmented skin that is especially thickened and provided with epidermal ridges over the weight-bearing areas. Synonym: planta pedis, regio plantaris. (05 Mar 2000) |
| plantable | Capable of being planted; fit to be planted. Source: Websters Dictionary (01 Mar 1998) |