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Asked Feb 26, 2019
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9. In gymnosperms, the material that nourishes the embryo derives from what tissue?
0. How can you visually differentiate a male from a female cone in pines?
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9. In gymnosperms, the material that nourishes the embryo derives from what tissue? 0. How can you visually differentiate a male from a female cone in pines?

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Expert Answer

Step 1

Vascular plants are defined as any plants that exhibit xylem and phloem, the vascular tissues. The vascular plants composed of all seed-bearing plants, such as gymnosperm and angiosperm and the pteridophytes, such as ferns, horsetails, and lycophytes.

Step 2

Gymnosperms are defined as a group of seed-producing plants such as cycads, conifers, gnetophytes, and Ginkgo. The term “gymnosperm” indicates “naked seeds”. Gymnosperms lack flowers or fruits and possess unenclosed seeds on the leaf surfaces. Therefore, gymnosperm seeds are often configured as cones.

Step 3

In gymnosperms, the female gametophyte is characterized by a large multicellular structure exist at the base of every scale in a pine cone. The gymnosperm ovule matures into seed once, fertilization takes...

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