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Spermatophyta (seed plants). Characteristics oVascular plant characterized by seed (Spermatophyta) oThey don’t have real flower (they only have cone/strobilus)

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Presentation on theme: "Spermatophyta (seed plants). Characteristics oVascular plant characterized by seed (Spermatophyta) oThey don’t have real flower (they only have cone/strobilus)"— Presentation transcript:

1 Spermatophyta (seed plants)

2 Characteristics oVascular plant characterized by seed (Spermatophyta) oThey don’t have real flower (they only have cone/strobilus) oSeed being naked on specialized leaf or a scale of the cone oHabitus: shrub, visible strolls, vine, trees oHave taproots oHave branches stems oHave hard, needle-like or fan like leafs Gymnosperm/Pinophyta

3 Classification 1. Cycadinae - Haven’t branches - Have large cones - Leaves like palm’s leaves - Dioceus - Example: Cycas rumphii

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6 Female strobilus

7 Male strobilus

8 2. Coniferae o Many are large trees o Needle-like leaves o Evergreen (always green) o They are usually monocious o Example: Pinus mercusii

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10 Female strobilus Male strobilus

11 3. Ginkgoinae oIt is a tall plant oThe leaf has a long stalk, is fan-shaped, and has branched veins oIn autumn, the leaves fall oThe outer cover of the seed is fleshy, while the inner cover is hard oExample: Gingko biloba

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16 4. Gnetinae oTropical trees, shrub or vine oLeaves look similar to flower plant oSeed look somewhat like fruits oSingle leaves oExample: Gnetum gnemon

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19 oPenyerbukan adalah menempelnya serbuk sari pada mikropil (liang bakal biji) → Gymnosperm oPenyerbukan adalah menempelnya serbuk sari ke kepala putik → Angiosperm oPembentukan megaspora disebut megasporogenesis oPembentukan mikrospora disebut mikrosporogenesis oPembentukan megagametofit disebut megagametogenesis

20 Bakal biji megagametofit megasporogenesis 1 megaspora fungsional 4 megaspora Sel induk megaspora Megasporangium (nuselus) ada meiosis membelah megagametogenesis

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22 Angiosperm/Magnoliophyta oAlready have true flower oThe shape and composition of flower vary but has the same basic parts, that is petals, sepals, pistil and stamen oPistil consist of styles, stigma, and ovary which contains ovules oStamen consist of filaments and anthers which contain pollen grains oIt has thin, wide leaves, and leaf veins with varied composition oOvule or seed does not appear, because it is covered by cotyledons oIt is undergoes double fertilization

23 Clasifications oMonocot : one cotyledon oDicots : two cotyledons

24 Dicots versus Monocots Seeds DicotsMonocots - Two cotyledons - Flower parts in fours or fives - Leaves with distinct vein network - Vascular cambium present - Vascular bundles in ring - Pollen grain with three apertures - One cotyledon - Flower parts in threes - Leaves with parallel primary veins. - Vascular cambium absent - Vascular bundles scattered - Pollen grain with one aperture

25 Dicots

26 fibrous taproots

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32 Bakal biji 2 inti megasporogenesis 1 megaspora fungsional 4 megaspora Sel induk megaspora ada meiosis membelah Mega gameto genesis Megasporangium (nuselus) ada Ke kutub kalazaKe kutub mikrofil Membelah 2 kali 4 inti 1 inti ke tengah 2 inti di tengah kandung lembaga Sel antipoda 3 inti membentuk sel Sel telur Sel sinergid Sel kandung Lembaga (2n)

33 Kepala sari Serbuk sari mikrosporogenesis 4 sel mikrospora (n) Sel induk mikrospora 2 kantong sari (mikrosporangium) ada meiosis Mikro gameto genesis 2 ruang sari ada Sel generatifSel vegetatif 2 Sel sperma Di buluh Serbuk sari

34 Pollination oBased on agent 1. anemofili → wind 2. hidrofili → water 3. zoodiofili → animals a. entomofili → insects b. ornitofili → birds c. kiropterofili → bats d. malakofili → snails 4. antrofili → humans oBased on falling down pollen grains to stigma 1. autogami → alone 2. geitonogami → neighbour one plant 3. allogami → neighbour other plant (same kinds) 4. hibridogami → neighbour other plant (different kinds)

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