File:NSRW Embryo-Sac.jpg

From Wikisource
Jump to navigation Jump to search

NSRW_Embryo-Sac.jpg (285 × 561 pixels, file size: 60 KB, MIME type: image/jpeg)

Summary

Description
English: In the ovule of angiosperms there is developed what appears to be a large cavity, but is really a single large spore which is not discharged. This spore germinates and develops within itself a very simple gametophyte consisting of seven cells. This spore containing its gametophyte, before it was known to be a spore, was called the embryo-sac, because the embryo was observed to develop within it.
Date published 1914
Source “Embryo-Sac,” The New Student's Reference Work, v. 2, 1914, p. 611.
Author Unknown artistUnknown artist
Permission
(Reusing this file)
Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:NSRW_Embryo-Sac.jpg
→

This file has been extracted from an original image in The New Student's Reference Work: File:LA2-NSRW-2-0134.jpg.

 new file
Public domain

The author died in 1936, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 80 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current17:43, 9 January 2019Thumbnail for version as of 17:43, 9 January 2019285 × 561 (60 KB)Bob Burkhardt{{Information |description ={{en|1=In the ovule of angiosperms there is developed what appears to be a large cavity, but is really a single large spore which is not discharged. This spore germinates and develops within itself a very simple gametophyte consisting of seven cells. This spore containing its gametophyte, before it was known to be a spore, was called the embryo-sac, because the embryo was observed to develop within it.}} |date =published 1914 |source =“Embryo-Sac,...

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from "https://en.wikisource.org/wiki/File:NSRW_Embryo-Sac.jpg"