archegonia in a sentence
1) The female organs are known as archegonia ("sing.
2) Two archegonia can be seen in this photograph.
3) Antheridia and archegonia develop on the mature plant (the gametophyte).
archegonia example sentences
4) Megaspores germinate producing megagametophytes; at maturity one or more archegonia are produced.5) Male and female stems develop antheridia and archegonia , respectively, at their tips.
6) Eggs develop within the archegonia .
7) Sporophytes grow out of archegonia .
8) Mature male and female stems develop antheridia and archegonia , which produce sperm and eggs, respectively.
9) Dioicous - Having two forms of gametophyte, one form bearing antheridia and one form bearing archegonia .
10) The gametophytes or thallus, produce both motile sperm in the antheridia and egg cells in separate archegonia .
11) Monoicous - Having a single form of gametophyte bearing both antheridia and archegonia , either together or on separate branches.
12) The archegonia are small flask-shaped clumps of cells with an open neck (venter) down which the male sperm swim.
13) The sperm have only a tiny distance to travel to the archegonia , of which there are usually two or three.
14) The sporophyte consists of a foot that anchors the sporophyte to the archegonia , a stalk, and a spore capsule.
15) As in other land plants, the female organs are known as archegonia ("singular:" archegonium) and are protected by the thin surrounding perichaetum ("plural:" perichaeta).
example sentences with archegonia
16) In the presence of water, the biflagellate sperm from the antheridia swim to the archegonia and fertilisation occurs, leading to the production of a diploid sporophyte.17) It is dioicous: male plants produce only antheridia in terminal rosettes, female plants produce only archegonia in the form of stalked capsules.
18) Archegonia : A flask-shaped structure that produces a single egg at the bottom, reached by the sperm by swimming down the neck.
19) Involucre - A tube of thallus tissue that protects the archegonia
20) Paraphyses - Sterile hairs surrounding the archegonia and antheridia
21) "Antheridia and archegonia occur on different gametophytes," which are then called dioicous.
22) "Antheridia and archegonia occur on the same gametophyte," which is then called monoicous.
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