File:50. Поленови зрна од тиква (Cucurbita pepo).ogg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 1 min 43 s, 1,920 × 1,080 pixels, 4.97 Mbps overall, file size: 61.03 MB)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English: Pollen grains of Cucurbita pepo under microscope

The stamens are made up of filaments and anthers. Pollen grains are produced in the anthers. Pumpkin pollen grains were preserved in 70% ethanol. With a pipette, pollen grains are taken from the liquid and dripped into the middle of the object glass. The rest of the liquid in the pipette is returned to the glass container. A cover glass is placed, which is lowered at an angle of 45°. In this way, the native microscopic preparation is prepared and it is ready for microscopy. Pumpkin pollen grains are characterized by having spines and warts on their surface.

Prepared and performed by Sara Cvetanoska, Institute of Biology, FNSM, Ss. Cyril and Methodius University, Skopje, Macedonia.
Македонски: Поленови зрна од тиква (Cucurbita pepo)

Прашниците се изградени од прашнички конец (филамент) и антера. Во прашничките антери се создаваат поленовите зрна. Поленови зрна од тиква се конзервирани во 70% етанол. Со пипета се зема од течноста со поленови зрна и се капнува во средината на предметното стакленце. Остатокот од течноста во пипетата се враќа назад во стаклениот сад. Се става покровно стакленце кое се спушта под агол од 45°. На овој начин е подготвен нативниот микроскопски препарат и истиот е спремен за микроскопирање. Во видното поле се гледа поленово зрна на вкупно зголемување од 100 пати. Во видното поле се гледа поленово зрно на вкупно зголемување од 400 пати. Поленовите зрна од тиква се карактеризираат со тоа што имаат боцки и брдавици по својата површина.

Подготвено и изведено од Сара Цветаноска, Институт за биологија, ПМФ, УКИМ, Скопје.
Date
Source Own work
Author Deni Ingilizovski


Licensing

[edit]
I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

File history

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

Date/TimeThumbnailDimensionsUserComment
current14:47, 15 November 20221 min 43 s, 1,920 × 1,080 (61.03 MB)Dandarmkd (talk | contribs)Uploaded own work with UploadWizard

There are no pages that use this file.

Transcode status

Update transcode status
Format Bitrate Download Status Encode time
VP9 1080P 1.42 Mbps Completed 14:59, 15 November 2022 4 min 25 s
VP9 720P 612 kbps Completed 14:58, 15 November 2022 3 min 24 s
VP9 480P 313 kbps Completed 15:08, 15 November 2022 5 min 12 s
VP9 360P 173 kbps Completed 15:07, 15 November 2022 3 min 57 s
VP9 240P 104 kbps Completed 15:04, 15 November 2022 1 min 49 s
WebM 360P 505 kbps Completed 15:04, 15 November 2022 46 s
QuickTime 144p (MJPEG) 948 kbps Completed 21:20, 13 October 2024 7.0 s

File usage on other wikis

The following other wikis use this file:

Metadata