Micropyle - Wikipedia
网页Micropyle may refer to: Micropyle (botany) a minute opening in the integument of an ovule of a seed plant. Micropyle (zoology), a differentiated area of surface in an egg, through which a sperm enters
Micropyle - an overview | ScienceDirect Topics
网页The micropyle is the pore or canal within one or more integuments through which (in angiosperms) a pollen tube traverses prior to fertilization. (In nonangiospermous seed plants, the micropyle receives pollen grains directly.)
4.6.3: Mature Embryos and Seed Structure - Biology LibreTexts
网页The micropyle is a small round structure next to the hilum where the pollen tube entered. Figure \(\PageIndex{1}\): The external structures of a bean seed, an example of a eudicot (7X). The seed coat surrounds the seed. There is a round micropyle, where the pollen tube originally entered the ovule.
Micropyle | plant anatomy | Britannica
网页micropyle. plant anatomy. Learn about this topic in these articles: reproduction in plants. In angiosperm: Ovules. …a small opening called the micropyle at the top. In angiosperms the presence of two integuments is plesiomorphic (unspecialized), and one integument is apomorphic (derived).
The ecological function of insect egg micropyles
网页2022年2月11日 · Micropyles are egg openings that allow sperm entry for fertilisation, not just in insects but in a wide range of taxa, including fishes, cephalopods and plants (Lora et al., 2019; Yanagimachi et al., 2013).
Micropyle - Vocab, Definition, and Must Know Facts - Fiveable
网页The micropyle is a small opening in the outer covering of a seed, specifically at the end where the ovule was attached to the ovary. This structure plays a crucial role during fertilization and seed germination, allowing the entry of pollen and water, respectively.
Micropyle Definition & Meaning - Merriam-Webster
网页1. : a minute opening in the integument of an ovule of a seed plant. 2. : a differentiated area of surface in an egg through which a sperm enters. micropylar. ˌmī-krə-ˈpī-lər. adjective. Examples of micropyle in a Sentence.
Micropyle - Vocab, Definition, and Must Know Facts - Fiveable
网页The micropyle is a small opening in the ovule of seed plants through which the pollen tube usually enters during fertilization. It allows the sperm cells to reach the egg cell for successful fertilization.
40.3.1: Sexual Reproduction in Angiosperms - Biology LibreTexts
网页2021年12月17日 · The integuments, while protecting the megasporangium, do not enclose it completely, but leave an opening called the micropyle. The micropyle allows the pollen tube to enter the female gametophyte for fertilization.
32.1: Reproductive Development and Structure - Biology LibreTexts
网页The integument contains an opening called the micropyle, through which the pollen tube enters the embryo sac. The diploid sporophyte of angiosperms and gymnosperms is the conspicuous and long-lived stage of the life cycle.
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