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Lab #6 covering practical information, Slides of Biology

San Diego State University (SDSU)Biology

30 slides covering biology lab 6

Typology: Slides

2022/2023

Uploaded on 12/14/2023

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rana-yousif 🇺🇸

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Before the lab activity…
•Field trip ☺
•Pick 5 plants to draw + Label an Apomorphy + Possible Function
•Non-Vascular Plants (Liverworts, Hornworts, Mosses)
•Non-seed Vascular Plants (Lycopods, Sphenopsids, Psilophytes, Pteridophytes,
Ferns)
•Non-Flowering Seed Plants (Cycads, Ginkgo, Conifers)
•Flowering Plants
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Download Lab #6 covering practical information and more Slides Biology in PDF only on Docsity!

Before the lab activity…

  • (^) Field trip ☺
  • (^) Pick 5 plants to draw + Label an Apomorphy + Possible Function
  • (^) Non-Vascular Plants (Liverworts, Hornworts, Mosses)
  • (^) Non-seed Vascular Plants (Lycopods, Sphenopsids, Psilophytes, Pteridophytes,

Ferns)

  • (^) Non-Flowering Seed Plants (Cycads, Ginkgo, Conifers)
  • (^) Flowering Plants

Lab #6:

Flowering

Plants

Biol 204L

Flower Anatomy

  • (^) Flower=modified shoot system
  • (^) One or more Stamen and Carpel
  • (^) Perianth= Calyx(Sepals) + Corolla(Petals)
  • (^) Receptacle connects flower to pedicel

Stamen and Carpel

  • (^) Stamen is male reproductive organ of flower
  • (^) Contains filament and anther (which produced pollen)
  • (^) Pollination = transfer of pollen to female reproductive stigma
  • (^) Many pollination mechanisms have evolved - (^) Carpel is female reproductive sporophyll bearing ovules - (^) Structured as one or more pistils consisting of ovary, style, and stigma - (^) Site for pollen grain germination and pollen tube growth - (^) Important in fruit development
  • (^) Integuments are sheath-like masses enclosing the ovule, with a pore at one end called the micropyle where pollen can enter
  • (^) No archegonia
  • (^) Endosperm: product of double fertilization- one sperm fuses with egg cell and forms diploid zygote, other sperm cell fuses with two polar nuclei to produce triploid endosperm cell
  • (^) Becomes primary nutritive tissue for embryo

Monocots: monophyletic, stem is atactostele not eustele, parallel venation Eudicots: paraphyletic, tricolpate pollen grains

Stem and Shoot Modifications

shoot with some stem and roots, majority fleshy storage leaves shoot with lots of stem tissue and small leaves stem that is horizontal under or on the ground with scaly leaves flattened photosynthetic stem

Thorn : sharp pointed stem or shoot Spine : which is a sharp-pointed leaf or leaf part Prickle: a sharp-pointed epidermal structure found anywhere on the plant

Stem and Shoot Modifications

More leaf modifications

  • (^) Bud scales: non-photosynthetic, protect growing shoot apical meristem
  • Spines-modified leaves, look like thorns
  • (^) Tendrils-wrap around objects
  • (^) Pitcher and trap leaves are on carnivorous plants, which trap bugs to obtain nutrients that are not abundant in the soil

Flower Modifications

Before Next Lab

  • (^) Read through lab 7
  • (^) Pre lab 7 quiz
  • Study for practical 3