'Generative nucleus' presentation slideshows

SEXUAL REPRODUCTION IN ANGIOSPERMS (FLOWERING PLANTS)

In contrast to gymnosperms, the reproductive structures of the angiosperms are found within structures called flowers, and the seeds, while developing, are enclosed within a fruit. SEXUAL REPRODUCTION IN ANGIOSPERMS (FLOWERING PLANTS). STRUCTURE OF A FLOWER.

840 views • 49 slides

SEXUAL REPRODUCTION IN FLOWERING PLANTS

627 views • 34 slides

12.3 Reproduction in Flowering Plants

12.3 Reproduction in Flowering Plants. Vegetative structures : stems, roots and leaves Reproductive structures : flowers Vegetative Propagation : reproduction of vegetative structures. Sexual reproduction : introduce variation through meiosis by

690 views • 24 slides

Pollination and Fertilization in Flowering Plants

Pollination and Fertilization in Flowering Plants. Plant Propagation. Pollination. Begins when a grain of pollen lands on a receptive stigma. It ends when a pollen tube punctures the embryo sac. Pollen Grain = Generative nucleus + Tube nucleus.

850 views • 14 slides

Reproduction in flowering plants

Reproduction in flowering plants. Differences between gymnosperms and angiosperms in reproductive structures. Ovule. Seed cones and pollen cones. Evolution of the flower. A stem ( receptacle ) developed with 4 whorls of leaves tightly clustered at the end.

498 views • 14 slides

Fertilisation

Fertilisation. In plants. Learning outcome. Describe the process of fertilisation in flowering plants. Starting with pollen tube growth and ending with the fusion of the nuclei. Parts of a flower. The pollen grain. Male gametes are found in pollen grains

551 views • 9 slides

Fertilisation

Fertilisation. In plants. Learning outcome. Describe the process of fertilisation in flowering plants. Starting with pollen tube growth and ending with the fusion of the nuclei. Parts of a flower. The pollen grain. Male gametes are found in pollen grains

120 views • 9 slides

THE FLOWER

THE FLOWER. A flower is a structure specialized for sexual reproduction. A COMPLETE flower has sepals, petals, stamens and carpels. An INCOMPLETE flower is missing one or more of the parts listed for a complete flower. PERFECT vs. IMPERFECT FLOWERS.

570 views • 7 slides

Pollen Grain Development

Pollen Grain Development. Formation of the Male Gamete. The Stamen is Diploid. Microspore Mother Cells are found in the Anther. Meiosis. 4 Haploid Cells /A Tetrad is formed Pollen Grains. Mitosis. Each Pollen Grain now has two haploid nuclei (a) A Tube Nucleus (b) A Generative Nucleus.

886 views • 6 slides