Gymnosperms lack the bright, showy flowers and fruit-covered seeds of angiosperms. Gymnosperm literally means “naked seed,” and they are more primitive plants than angiosperms are. Gymnosperms evolved about 300 million years ago.Know More
Because gymnosperms do not produce showy flowers, they do not attract insects, birds and mammals that help with pollination. This means that all gymnosperms are wind-pollinated, and most broadcast a very high amount of reproductive cells into the air.
Because gymnosperms do not produce fruit, they do not depend on animals to eat the fruit and carry the seeds away for dispersal. Accordingly, many gymnosperms have seeds that are designed to float on the air or water in order to travel farther away from the parent plant. Some gymnosperms produce cones that contain a large number of seeds. Many cones remain closed to prevent predators from eating the enclosed seeds, and only open when exposed to fire.
Examples of gymnosperms include conifers, such as pine trees, redwood trees, cedar trees and cypress trees. Ginkgo trees are also gymnosperms, as are palm trees and cycads. Angiosperms outnumber the gymnosperms in the modern world, and are represented by such widely varied species as dandelions, potatoes, oak trees, maple trees and cacti.Learn more about Biology
The characteristics that all living things share are cells, growth, reproduction, adaptation, homeostasis, use of energy and response to the environment. Using these characteristics, it is easy to determine if something is living, dead or non-living.Full Answer >
Characteristics of a Volvox include the fact that each cell contains two flagella, which aids in movement through water, and the colonies reproduce asexually. The cells of a Volvox are held together by protoplasm strands.Full Answer >
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Enzymes are primarily protein and act as biological catalysts in a wide variety of vital metabolic processes. Simple enzymes are comprised of protein only and conjugated enzymes are those which are comprised of both a protein and a non-protein portion. All enzymes aid in biochemical processes through their ability to bind to their respective substrates and lower the amount of activation energy required for a metabolic reaction to occur.Full Answer >