25 results found

Search Results for: tobacco

Tobacco

tobacco 1. (Science: botany) An American plant (Nicotiana Tabacum) of the nightshade family, much used for smoking and... Read More

Tobacco mosaic virus

Definition noun, plural: tobacco mosaic viruses A mosaic virus belonging to genus Tobamovirus that causes mottling and... Read More

Polygenic inheritance

Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many... Read More

Nicotine

nicotine (Science: drug) A plant alkaloid from tobacco, blocks transmission at nicotinic synapses. An alkaloid poison that... Read More

Effect of Chemicals on Growth & Development in Organisms

Plants Plants require a large number of elements to function properly, mainly carbon, oxygen, and hydrogen, essentially... Read More

Smoke

smoke 1. To apply smoke to; to hang in smoke; to disinfect, to cure, etc, by smoke; as, to smoke or fumigate infected... Read More

Synergistic effect

Synergistic Effects Definition Synergistic effects (biology definition): the effects when chemical substances or biological... Read More

Strip

strip 1. To deprive; to bereave; to make destitute; to plunder; especially, to deprive of a covering; to skin; to peel; as,... Read More

Drink

Drink 1. Liquid to be swallowed; any fluid to be taken into the stomach for quenching thirst or for other purposes, as... Read More

Heat-labile

Definition adjective Likely to be altered or degradation when subjected to heat Supplement In chemistry, the lability of a... Read More

Leaves

Leaves are highly efficient solar energy converters. They capture light energy and through the process of photosynthesis.... Read More

Degenerative disease

A degenerative disease is defined as a disease characterized by the worsening condition due to the deterioration of the... Read More

Transposon

Definition noun, plural: transposons A small segment of DNA that is capable of replicating and inserting copies of DNA at... Read More

Mosaic disease

Definition noun An infectious disease in plants characterized by the speckled appearance in leaves due to mottling and... Read More

The consequences of antibiotic use in horticulture

Leading articles Frederick R. Falkiner* Department of Clinical Microbiology, Trinity College, Dublin; Central Pathology... Read More

Insect control

Definition noun A method of controlling insect population, such as by chemical, biological, or other means Supplement There... Read More

Obligate parasite

Parasitism is a form of symbiosis that occurs between a parasite and its host. The parasite is the organism that generally... Read More

Twist

twist 1. The act of twisting; a contortion; a flexure; a convolution; a bending. Not the least turn or twist in the fibres... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Cancer

Cancer definition In biology, cancer is defined as the malignant growth due to uncontrolled cell division. It is now used... Read More

Virus

Definition noun, plural: viruses A submicroscopic infectious agent that is unable to grow or reproduce outside a host... Read More

Pipe

pipe 1. A wind instrument of music, consisting of a tube or tubes of straw, reed, wood, or metal; any tube which produces... Read More

Screw

screw 1. To turn, as a screw; to apply a screw to; to press, fasten, or make firm, by means of a screw or screws; as, to... Read More

Mosaic

Definition (general) (1) A pattern consisting of numerous small pieces (or elements) fitted together. (2) Anything that... Read More

Negro

negro Origin: Sp. Or Pg. Negro, fr. Negro black, L. Niger; perh. Akin to E. Night. A black man; especially, one of a race of... Read More