Search Results for: pollen
Pollen Grain
What are Pollen Grains? Plants are unique structures and so they carry out mechanisms in special ways. Fertilization in... Read More
Angiosperm
Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More
Seed Plants
There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... Read More
Sporopollenin
sporopollenin a major component of the tough outer (exine) walls of spores and pollen grains. (Science: biopolymer) a... Read More
Reproduction
Reproduction Definition Reproduction is a biological phenomenon of producing offspring/s. i.e. more of its kind. Depending... 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
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
Mutualistic symbiosis
Mutualistic Symbiosis Definition In order to understand what a mutualistic symbiotic relationship means, we will break down... 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
Fruits, Flowers, and Seeds
Flowering plants grow in a wide variety of habitats and environments. They can go from germination of a seed to a mature... Read More
Hypersensitivity
Hypersensitivity Definition Hypersensitivity is the exaggerated immune response to protect the human from foreign bodies... Read More
Gymnosperm
Definition noun, plural: gymnosperms A vascular plant in which the seeds are not enclosed by a ripened ovary... 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
Sporophyte
Sporophyte Definition What is a sporophyte? Accordingly, the sporophyte is the plant generation that produces spores. To... Read More
Eudicotyledon
Definition noun, plural: eudictoyledons Any of the tricolpate angiosperms characterized mainly by having two cotyledons in... Read More
Growth and Plant Hormones
Growth All living organisms begin in the same form: as a single cell. That cell will divide and the resulting cells will... 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
Electrotropism
Definition noun Growth or movement of a cell or an organism in response to an electric field Supplement In general, tropism... Read More
Chloroplast DNA
Definition noun plural: chloroplast DNAs DNA in the chloroplast that carries the code for proteins and RNAs essential to... 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
Liliopsida
Definition noun (plant taxonomy) A taxonomic class of the division Magnoliophyta comprised of lilies, grasses, palms,... 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
Adventitious embryony
Definition noun A form of apomixis where a nucellar embryo arises from the diploid nucellus tissue surrounding the embryo... 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
Monocotyledon
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