Ex_06--Survey_of_Plant_Kingdom_II

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101B

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Biology

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Feb 20, 2024

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© 2020 James E. Baxter Bio. 101B--Ex. 6 Worksheet Name:_________________________ Lab Section:(am/pm/eve)__________ Archaeplastida II — Coniferophyta and Angiospermae C ONIFEROPHYTA Part A-1: Staminate Cone — Photo Atlas Figure 6.157 1. LEFT--sketch of one of the staminate cones from the displays in the lab. RIGHT, sketch a dissected microsporophyll (you do the dissecting). Label: staminate cone, microsporophyll, microsporangium. 2. Staminate cone — Prepared slide , ls,--Photo Atlas Figures 6.158 and 6.159. Make two drawings. LEFT — overview of complete cone at 40x. Label: cone axis, microsporophyll, microsporangium. RIGHT — one microsporophyll at 100x or 400x. Label: microsporophyll, microsporangium, microsporocytes or pollen grains (whichever happen to be present).
6-2 Part A-2: Pine Pollen Sketch pine pollen from a prepared slide . (Use Figure 1) Part A-3: Ovulate cones 1. Sketch 1 st spring cone, 2 nd spring cone, and mature ovulate cone using displays in the lab.
6-3 2. Prepared slide, longitudinal section, ovulate cone. Photo Atlas figures 6.154-6.156. On LEFT — Sketch overview of entire cone at 40x. Label: scale, cone axis, bract, ovule. On RIGHT — sketch one ovuliferous scale at a higher magnification. Label: ovule, micropyle, pollen grain (if present), pollen chamber, integument, megasporocyte (if present).
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6-4 3. Female Gametophyte, prepared slide. Figure 2 and Photo Atlas figure 6.165. Sketch at 40x. Label: Ovule, integument, micropyle, female gametophyte, archegonium, egg. Part B-1 — Angiospermae — Male Gametophyte. Photo Atlas figures 6.264-6.267. LEFT — Sketch a cross-section of a lily anther (prepared slide) at 40x. Label: Microsporangium (=pollen sac), pollen. RIGHT — Sketch microsporangium at higher magnification. Label: microsporangium, pollen.
6-5 Part B-1.2 — Angiospermae — Ovary and Female Gametophyte 1. Sketch a cross-section through a lily ovary (prepared slide) at 40x. Label ovary, locule, ovule. See Figure 3.
6-6 2. Sketch view of one ovule (prepared slide) with megasporocyte at 400x. Label: ovule, integument, micropyle, megasporocyte. Use PA figure 6.268. 3. Female Gametophyte — 4-cell stage (prepared slide). Photo Atlas figure 6.270. Examine a slide showing the 4-cell stage female gametophyte at 400x. Draw and label: ovule, integument, female gametophyte.
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6-7 4. Mature female gametophyte (=embryo sac) (prepared slide). Photo Atlas figure 6.271. Examine a slide showing the mature female gametophyte. Label: ovule, integument, female gametophyte, egg, polar nuclei, synergid cells, antipodal cells.

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