flower presen
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apocarpyMACS Cobar
http://www.eeob.iastate.edu/classes/botany306/terminology/fruit/images/parietal-axile.jpg -
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Marginal placentation of a fruit
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Modifications or variations4. Method of insertion
- horizontal(Prefloration or aestivation)- vertical (attachment of floral parts on
the receptacle; ovary position)a. hypogynousb. epigynousc. perigynous
d. hypanthium5. Symmetry- radial, regular or multilateral
- bilateral or irregularMACS Cobar
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Modifications and variations
6. Inflorescence or Anthotaxy
a. raceme f. corymbb. panicle g. cymec. spike h. head
d. spadix i. umbele. catkin or ament j. fascicle
7. Color and size8. Number of floral parts
a. 3s or multiples of 3s = monocotyledon
b. 4s or 5s or mutiples of 4 or 5 = eudicotMACS Cobar
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ROSE
Hypanthium fused basal portion of the androecium,calyx or corolla are fused together to form atube around an inferior ovary
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Banner /vexillum
Wing / alae
Keel /carina
ovary
Papilionaceous flower
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Caesalpinnaceous flowerMACS Cobar
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African violets
Pseudoranthenum
Thumbergia
Bilabiate flowers
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Labellum / lip
sepal
petal
Orchidaceous flower MACS Cobar
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Bilabiate
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Fascicle Spadix
spathe
bract
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Reproduction
Alternation of generationsa. Gametophyte - sexual plant1. Female embryo sac
2. Male pollen nucleib. Sporophyte asexual plant
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Carpel
Megasporophyll- ovary Closed sac protecting the
ovules (megasorus)
Ovules transformed budsdeveloping as seeds
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Parts of the ovule
1. Nucellus (megasporangium)- Embryo sac with 8 nuclei (egg, 2 synergids, 3
antipodals and 2 polar bodies)
2. Funiculus ovular stalk3. Chalaza vascular plexus
4. Integuments seed coats5. Foramen or micropyle - opening
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StamenMicrosporophyll / stamen
Anther / microsorus filament
Microsporangium / pollen sac Anther lobes
Pollen mother cell
Pollen grain / microspore
meiosisPollen
(male gametophyte)
membranes
Generative / mother cell
Vegetative / tube cell
Extine / exosporiun -sporopollenin
Intine / endosporium
haploid
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Ovary wall
locule
septum
placenta
ovule
funiculus
chalaza
Embryo sac
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meiosis
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B
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Pollination Transfer of pollen from anther to stigma Kinds
1. Close or self- pollinationa. self sterilityb. different maturation time (protoandrous,
protogynous)
c. differences in distance2. cross pollinationa. wind anemophilousb. insects entomophilousc. water currents hydrophilousd. small animals birds (ornithophilous); snails
(malacophilous); bats (chirophilous)
e. manMACS Cobar
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E
Z
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Seed Fertilized mature ovule containing an embryo 4 principal parts of the embryo
1. Caulicle embryonic stem2. Plumule embryonic bud (apex of caulicle and
rudimentary leaves)3. Radicle embryonic root4. Cotyledon 1 or 2 seed leaves
- epicotyl (above the cotyledon)- hypocotyl (below the cotyledon)
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f d
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Parts of a seed Integuments of ovule seed coats
1. Testa outer integumenta. coma c. wingsb. awn- third integument aril (excrescence,
caruncle/strophiole); arillode2. Tegmen inner integument
Hilum scar
Raphe continuation of the funiculus along thetesta
albumenMACS Cobar
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Embryo developmentMACS Cobar
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