1 / 17

SEEDS

SEEDS. Ovule Structure. chalaza. raphe. nucellus. antipodal cells. outer intergument. inner intergument. polar nuclei. embryo sac. egg cell. micropyle. synergid cell. funiculus. Pollination and Fertilisation. pollen. pollen tube. antipodal cells. 2 polar nuclei. egg cell.

friedmand
Download Presentation

SEEDS

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. SEEDS

  2. Ovule Structure chalaza raphe nucellus antipodal cells outer intergument inner intergument polar nuclei embryo sac egg cell micropyle synergid cell funiculus

  3. Pollination and Fertilisation pollen pollen tube antipodal cells 2 polar nuclei egg cell tube nucleus 2 male gametes 2 synergid cells

  4. Double fertilization

  5. Seed coat a. testa b. tegmen hilum raphe funiculus aril micropyle Endosperm seed without endosperm exalbuminous (non-endospermous) seed with endosperm albuminous (endospermous)

  6. 3. Perisperm - originates from nucellus tissue 4. Embryo a. cotyledon / scutellum (in monocot) b. plumule c. radicle d. epicotyl e. hypocotyl f. coleoptyle (in monocot) g. coleorrhiza (in monocot) Types of seed germination: a. epigeal (in dicot) b. hypogeal (in monocot)

  7. Dicotyledonous seed (with endosperm) endosperm seed coat cotyledons shoot apex raphe radicle caruncle

  8. Rubber seeds Castor oil seeds

  9. Dicotyledonous seed (with endosperm) seed coat embryo shoot apex cotyledon radicle endosperm

  10. Chilli Chilli seeds

  11. Dicotyledonous seed (without endosperm) raphe seed coat cotyledon hilum micropyle plumule radicle

  12. Bean seeds

  13. Monocotyledonous seed (with endosperm) pericarp and fused seed coat coleoptile endosperm first leaves aleurone layer shoot apex caryopsis coat radicle scutellum (cotyledon) coleorhiza

  14. Maize seed

  15. Glumes Paddy seed

  16. Germination of dicotyledonous seed (epigeal) Epicotyl

  17. Germination of monocotyledonous seed (hypogeal)

More Related