Done By: Ronald
McDonald
Gabrielle Lindo
Joel Murphy
Objectives
• Define the following terms: pollination,
fertilization, double fertilization.
• Types of pollination.
• Agent...
Pollination
• Pollination is the transfer of pollen from the
anthers of a flower to the stigma of the same
flower or of an...
DIAGRAMS SHOWING THE STRUCTURE
OF FLOWERING PLANT
FUNCTIONS OF A FLOWERING PLANT
Difference between self-pollination
and cross-pollination
• Self-pollination is the transfer of pollen grains
from the ant...
Agent of pollination
• Pollen grains from another anther is
transferred onto the stigma of the recipient
flower by any of ...
Process of pollination in terms of
insect pollination
• Pollinators gather nectar for food. As
pollinators move from one f...
DIAGRAM SHOWING CROSS-
POLLINATION
Fertilization
• Fertilization is the process of fusion of the
female gamete, the ovule and the male
gamete produced in the...
Fertilization process
• Pollen tubes from the pollen grains will start to
grow into the style. This will create a pathway
...
DIAGRAMS SHOWING FERTILIZATION
OF A FLOWERING PLANT
Outlined steps and diagram of
plant from pollination to
fertilization
• Pollen grains land on the
sticky stigma.
• A polle...
DOUBLE FERTILIZATION
Double fertilization is
complex mechanism of
fertilization in flowering
plants (angiosperms).
Double ...
DIAGRAM SHOWING A FLOWERING
PLANT FROM POLLINATION TO
DOUBLE FERTILIZATION
THE SIGNIFICANCE OF DOUBLE
FERTILIZATION IN THE EMBRYO
SAC
• The triploid endosperm nucleus divides by
mitosis to give a t...
Pollination and fertilization
Pollination and fertilization
of 18

Pollination and fertilization

It is briefly on the features and functions of a plant. Most it is on the processes of pollination and fertilization.
Published on: Mar 4, 2016
Published in: Education      
Source: www.slideshare.net


Transcripts - Pollination and fertilization

  • 1. Done By: Ronald McDonald Gabrielle Lindo Joel Murphy
  • 2. Objectives • Define the following terms: pollination, fertilization, double fertilization. • Types of pollination. • Agents of pollination. • Function and parts of a flowering plant. • Explain the sequence of events from pollination to fertilization using annotated diagrams. • Explain the significance of double fertilization in the embryo sac.
  • 3. Pollination • Pollination is the transfer of pollen from the anthers of a flower to the stigma of the same flower or of another flower. Plants can be pollinated whether by itself (self-pollination) and or with another plant (cross-pollination).
  • 4. DIAGRAMS SHOWING THE STRUCTURE OF FLOWERING PLANT
  • 5. FUNCTIONS OF A FLOWERING PLANT
  • 6. Difference between self-pollination and cross-pollination • Self-pollination is the transfer of pollen grains from the anther of a flower to the stigma of either the same or genetically similar flower while cross-pollination is the transfer of pollen from the anther of a flower on one plant to a stigma of a flower on another plant of the same species.
  • 7. Agent of pollination • Pollen grains from another anther is transferred onto the stigma of the recipient flower by any of these pollinated agents: wind, animal, insect, mechanical explosive and water.
  • 8. Process of pollination in terms of insect pollination • Pollinators gather nectar for food. As pollinators move from one flower to another to gather more nectar, the pollen grains on the pollinator’s body gets transferred to the stigma of the recipient flower. For example: Bees.
  • 9. DIAGRAM SHOWING CROSS- POLLINATION
  • 10. Fertilization • Fertilization is the process of fusion of the female gamete, the ovule and the male gamete produced in the pollen tube by the pollen grain.
  • 11. Fertilization process • Pollen tubes from the pollen grains will start to grow into the style. This will create a pathway for the pollen grain to travel down to the ovary. •Once the pollen grain reaches the ovary, the male sex cell inside the pollen grain fuses with the female sex cell inside the ovule.
  • 12. DIAGRAMS SHOWING FERTILIZATION OF A FLOWERING PLANT
  • 13. Outlined steps and diagram of plant from pollination to fertilization • Pollen grains land on the sticky stigma. • A pollen tube grows down the style, followed by male sperm nuclei. • The sperm nuclei fuse with the female ovules. • The ovules develop into seed, and the ovary develops into fruit.
  • 14. DOUBLE FERTILIZATION Double fertilization is complex mechanism of fertilization in flowering plants (angiosperms). Double fertilization is joining of a female gametophyte with two male gametes.
  • 15. DIAGRAM SHOWING A FLOWERING PLANT FROM POLLINATION TO DOUBLE FERTILIZATION
  • 16. THE SIGNIFICANCE OF DOUBLE FERTILIZATION IN THE EMBRYO SAC • The triploid endosperm nucleus divides by mitosis to give a tissue that surrounds the developing embryo. In some cases, the endosperm is used up before the embryo is mature.