LAB 5 Answers

LAB 5 Answers - LAB 5 ANGIOSPERM GROWTH AND REPRODUCTION...

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LAB 5 ANGIOSPERM GROWTH AND REPRODUCTION Answers to questions in the lab exercise: At which season of the year was the twig on the slide cut from the tree? Fall or early winter. Examine Gladiolus . Are there septa (walls) traversing the cavity of the ovary? Yes, there are three septa. Gladiolus is a monocot and monocot flowers have their structures in multiples of three. This example, Gladiolus has exactly three ovules and the septa separate them. The ovary is therefore partitioned into three, with three cavities or locules. Examine a female gametophyte. What is the maximum number of megaspore nuclei you would expect to find in one ovule? There should be no more than four megaspores, each the product of meiosis. Can you find a micropyle in an ovule? How many integumentary layers can you see? The micropyle attaches the ovule to the ovary. Look until you find a slide that shows you this structure. It should be visible. You should also be able to discern usually two integumentary layers. What is the maximum number of nuclei possible in one embryo sac? No more than eight.
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LAB 5 Answers - LAB 5 ANGIOSPERM GROWTH AND REPRODUCTION...

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