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Seeds and Fruits. Alternation of Generations All plants have a life cycle in which a diploid sporophyte generation alternates with a haploid gametophyte.

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Presentation on theme: "Seeds and Fruits. Alternation of Generations All plants have a life cycle in which a diploid sporophyte generation alternates with a haploid gametophyte."— Presentation transcript:

1 Seeds and Fruits

2 Alternation of Generations All plants have a life cycle in which a diploid sporophyte generation alternates with a haploid gametophyte generation.

3 Moss have a dominant gametophyte Non-vascular

4 Ferns have a dominant sporophyte Vascular

5 Gymnosperm Lifecycle Vascular Wind pollinated!

6 Structure of Flowers Vascular

7 Seed Development

8 Seeds

9 Fruit Development As angiosperm seeds mature, the ovary walls thicken to form a fruit that encloses the seeds that developed from the ovules.

10 Fruit Structure

11 Types of Fruits Hip Hesperidium Accessory Berry Pome Drupe Caryopsis Capsule Pepo Achene Multiple Nut Legume Samara SchizocarpSilique Follicle

12

13 Animal Pollination & Dispersal

14 Wind Pollination & Dispersal

15 Animal Pollination

16 Seed Development Hypocotyl – embryo attaches to cotyledons. Radicle – embryonic root Epicotyl – will develop into stem. Plumule – develops into first leaves. Scutellum – absorbs nutrients during germination. Coleorhiza – sheath that covers young root. Coleoptile – covers shoot

17 Seed Germination Monocot Dicot

18 Seeds and Fruits Lab

19 Plant Propagation & Agriculture  Vegetative reproduction includes the production of new plants from horizontal stems, cuttings, leaves, plantlets, and underground roots.  Horticulturists use plant propagation to make many identical copies of a plant or to produce offspring from seedless plants.  Most of the people of the world depend on a few crop plants, such as wheat, rice, and corn, for the bulk of their food supply. Peanut Flower

20 Okra

21 Peach


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