15 results found

Search Results for: pollen grain


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

Seed Plants

There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... 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


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


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


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


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


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


Grain (Science: botany) a fruit characteristic of grasses (such as rice), pollen Grain, a microspore of a seed plant, or the... Read More


Intine (Science: plant biology) inner layer of the wall of a pollen Grain, resembling a primary cell wall in structure and... Read More


Definition noun, plural: microspores (botany) The smaller spore produced by sporophytes and develop into male... 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

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


porate (Science: botany) Of a pollen grain, with rounded apertures only. Compare:... Read More