Gymnosperms and Angiosperms - Vascular Plants with Seeds Gymnosperms - Cone producing plants The gymnosperms were the first plants to develop seeds and pollen. These innovations, as well as other adaptations, assisted them in further colonizing the land. The conifers are the most abundant gymno-sperms in terms of population size and species diversity. There are 550 different species of conifers. Examine the conifers on display. 1. List three examples of conifers: a. b. c. 2. List two distinguishing characteristics of conifers: a. b. 3. Compare male and female pine cones by: a. size and structure: b. what they produce: 4. What is the function of the pine's needles?
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Three examples of conifers: - Pine (Pinus) - Spruce (Picea) - Fir (Abies) Show more…
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Madhur L.
Gymnosperms The next group, the Gymnosperms includes cone producing species like pine trees and related species like Cycads, Ginkos, and plants called Gnetophytes that include Ephedra, the stimulant that has been linked to heart problems including heart attacks and strokes. All of these organisms are grouped together because they have seeds but they do not have true flowers and do not protect the seed with a true fruit. Compare the diversity of species on display, taking special note of the contrasting characteristics. How would you describe the leaves of a Pine tree? Hypothesize a reason why pines and other conifers (cone-producing species) have modified leaves in the shape of needles or scales.
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