Pollination differs between angiosperms and gymnosperms in that most angiosperms entice animals to carry their pollen from plant to plant, while most gymnosperms rely on the wind carrying their pollen to other plants. There are many wind-pollinated angiosperms and a very few animal-pollinated gymnosperms, however. The methods angiosperms use tend to be more effective at spreading quickly, but gymnosperms, particularly conifers, are generally better adapted to cold or dry environments.Know More
According to Tulane University, gymnosperms were the first major group of plants to emerge after ferns and their allies, displacing that earlier group as the dominant land plants. Angiosperms arose relatively soon after, however, and quickly displaced the gymnosperms in turn. Their dominance was not as complete, however, since one group of gymnosperms, the conifers, still dominate in colder regions and at higher altitudes.
Angiosperms have more advanced tissues and much more diversity than modern gymnosperms, in large part due to their more effective methods of pollination. This is particularly true in areas where insect pollinators are plentiful. However, even with wind-pollinated species, such as grasses, their ability to grow quickly allows them to be the pioneer flora in many environments, starting environmental succession even where later stages are dominated by gymnosperms.Learn more about Botany
In their flowers, male plants have stamens coated with pollen, while female plants have pistils that contain the ovaries. Most plants are both male and female, so gardeners are more likely to see both structures. Exceptions to this include holly and squash.Full Answer >
Pollination is the process whereby pollen grains move from the anther to the stigma on a flower’s style, while fertilization is the fusion of the male gametes and female egg cells to form a new plant seed. Pollination precedes fertilization and depends on such media as wind, water and insects. Pollination takes place externally, while fertilization occurs in the inside of the flower and does not depend on external vectors.Full Answer >
Cross-pollination, which is when the pollen of one plant fertilizes another plant of the same species, occurs in a huge number of plants, including corn, willows, grasses and olive trees. A large number of food crops are cross pollinated, including squash, onions, broccoli and spinach.Full Answer >
There are many advantages and disadvantages of cross pollination in plants. One such advantage is adding genetic diversity to the species. However, for someone who wants to protect the purity of the plant's genetic pool, than this can be a disadvantage as well.Full Answer >