75 results found

Search Results for: pollen

Angiosperm

Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More

Pollen

pollen (Science: plant biology) The microspores of seed plants, the powdery mass of microspores shed from... Read More

Pollen Grain

A structure produced by plants containing the male haploid gamete to be used in reproduction. The gamete is covered by... Read More

Sporopollenin

sporopollenin a major component of the tough outer (exine) walls of spores and pollen grains. (Science: biopolymer) a... Read More

Self pollination

Definition noun (botany) A type of pollination in which the pollen from the anther of the flower is transferred to the... Read More

Cross-pollination

Definition noun (botany) A type of pollination in which the pollen from the anther of a flower is transferred to the stigma... Read More

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Elaioplast

Definition noun, plural: elaioplasts (botany) A leucoplast that stores oil Supplement Plastids are organelles involved in... Read More

Allogamy

Definition noun (botany) Cross-fertilization, where fertilization occurs when an ovum of a flower is fertilized by the... Read More

Tectum

Definition noun, plural: tectums, tecta A roof-like covering or structure Supplement Tectum is a term used to describe a... Read More

Pollinium

Definition noun, plural: pollinia A mass of coherent pollen grains, as in the flowers of orchids and milkweeds... Read More

Stigma

stigma The pollen-receptive surface of a carpel or group of fused carpels, usually sticky. The apical end of the style where... Read More

Stamen

stamen One of the male organs of a flower, consisting typically of a stalk (filament) and a pollen-bearing portion... Read More

Anther

Definition noun, plural: anthers (1) Pollen-bearing structure in the stamen (male organ) of the flower usually located on... Read More

Plant

Plant Definition (botany) Any of the eukaryotic organisms of the biological kingdom Plantae, characterized by being... Read More

Pollinator

Pollinator A pollinator is the agent that moves pollen from the male anthers of a flower to the female stigma of a flower to... Read More

Gymnosperm

Definition noun, plural: gymnosperms A vascular plant in which the seeds are not enclosed by a ripened ovary... Read More

Fall and Winter Allergies

Well, the outdoor allergy season is almost over and we will soon be finished doing collections and providing information to... Read More

Anther culture

Anther culture a plant culturing technique in which immature pollen is made to divide andgrow into tissue (either callus or... Read More

Chemotropism

Definition noun Growth or movement response of a cell or an organism to chemicals Supplement In general, tropism is an... Read More

Pollination

Transfer of pollen from the anther to the stigma of a plant.The transfer of pollen from male to female reproductive organs... Read More

Automixis

Definition noun (botany) Self-fertilization; a mode of fertilization where fertilization takes place on the flower itself,... Read More

Eudicotyledon

Definition noun, plural: eudictoyledons Any of the tricolpate angiosperms characterized mainly by having two cotyledons in... Read More

S gene complex

S gene complex (Science: molecular biology) genes coding for molecular components of the pollen stigma recognition system in... Read More

The Botany of Desire: A Plant’s-Eye View of the World

 The Botany of Desire: A Plant's-Eye View of the World      ... Read More

Callose

Definition noun (botany) A plant polysaccharide composed of glucose residues linked together through β-1, 3-linkages... Read More

Mutualism

Mutualism Definition What is mutualism? In biology and ecology, a mutualism is a form of symbiosis that is characterized by... 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

Moth

Moth Definition A moth is a lepidopteran insect. Moths belong to the Order Lepidoptera, together with the butterflies.... Read More

Nucellar embryony

Definition noun A form of apomixis where a nucellar embryo arises from the diploid nucellus tissue surrounding the embryo... Read More

Monocotyledon

Definition noun, plural: monocotyledons A group of flowering plants belonging to the class Liliopsida (or Monocotyledonae)... Read More

Monocot

Definition noun, plural: monocotyledons A group of flowering plants belonging to the class Liliopsida (or Monocotyledonae)... Read More

Dicotyledon

Definition noun, plural: dicotyledons A group of flowering plants belonging to the class Magnoliopsida of Angiospermae... 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

Gene flow

Definition noun The movement and exchange of genes or alleles from one population of species to another Supplement Gene flow... Read More

Electrotropism

Definition noun Growth or movement of a cell or an organism in response to an electric field Supplement In general, tropism... Read More

Thigmonasty

Definition noun A form of nastic movement (of a plant or a fungus) as a response to touch or vibration Supplement Nastic... Read More

Exogenous antigen

Definition noun Antigen that enters the body of the organism from the outside, e.g. through inhalation, ingestion, or... Read More