Archegonium
Archegonium
Archegonium (pronunciation: /ɑːrkiːˈɡoʊniəm/), is a term derived from the Greek words 'arche' meaning 'beginning', and 'gonia' meaning 'angle'. It is a sex organ found in nonvascular plants, seedless vascular plants, and some gymnosperms.
Definition
An Archegonium is a multicellular structure or organ of the gametophyte phase of certain plants, which produces and contains the ovum or female egg cell. The archegonium has a long neck canal or tube-like structure leading to the venter, inside which the egg cell is produced.
Function
The primary function of the Archegonium is to produce, protect and nourish the female gamete. It also plays a crucial role in the process of fertilization in plants.
Structure
The Archegonium consists of a swollen base or venter, which contains the egg cell, and a neck, which is a tube-like structure. The neck canal cells disintegrate to form a passage for the entry of the male gamete or sperm.
Related Terms
- Gametophyte: The phase in the life cycle of a plant or alga that has a single set of chromosomes and gives rise to the haploid gametes.
- Venter: The swollen basal region of an archegonium, containing the single egg.
- Sperm: The male reproductive cell or gamete in algae, fungi, and plants.
External links
- Medical encyclopedia article on Archegonium
- Wikipedia's article - Archegonium
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