1 / 21

rye

rye. A young root –the first organ to emerge during seed germination---WHY?. Adventitious roots. root hairs. Slimy layer. Root apical meristem. rootcap. Root tip. epidermis. cortex. endodermis. Vascular cylinder. stele. Cross section of primary root. epidermis. cortex. endodermis.

tammyt
Télécharger la présentation

rye

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. rye

  2. A young root –the first organ to emerge during seed germination---WHY?

  3. Adventitious roots

  4. root hairs Slimy layer Root apical meristem rootcap Root tip

  5. epidermis cortex endodermis Vascular cylinder stele Cross section of primary root

  6. epidermis cortex endodermis Vascular cylinder stele Cross section of primary root

  7. pericycle Primary xylem Primary phloem xylem Cross section of primary root

  8. Stele: A = xylem B = phloem C = endodermis D = pericycle Dicot root cross section

  9. Zea sp. root cross section

  10. storage

  11. Pneumatophores -- for breathing in waterlogged soil

  12. Contractile roots --thickened specialized roots at the base of a corm, bulb, or other organ which is designed to shrink vertically under conditions of seasonaldrought  that helps position this plant part at an appropriate level in the ground.

  13. Haustoria – suckers of parasitic plants for obtaining nutrients from their hosts

  14. Mycorrhizae –mutualistic relationship between plant roots and fungi Pinus strobus with Amanita muscaria

  15. Root nodules --–mutualistic relationship between plant roots and N-fixing bacteria

More Related