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One major trend in animal evolution has been the gradual increase in the ratio of brain size to body mass. Birds of the late Cenozoic have larger ratios than cretaceous avians. This same general principle holds true for mammals, of course. I'm not so certain the relation carries over to reptiles (diapsids), turtles (anapsids), or fish.
Of course, there are cephalopods, insects, and hoary hosts of other animals. I'm not as familiar with evolutionary trends in marine species.
What else can I help you with?
The history of plants can be understood in terms of the evolution of what kind of structures?
Over time, the demands of life on land favored the evolution of plants more resistant to the drying rays of the sun, more capable of conserving water, and more capable of reproducing without water.
What fraction of geological time have land plants been present on earth?
Approximately : land plants have been around for a half a billion years. The Earth for 4.5 billion years. So your answer is one ninth.
How can you classify land plants in two ways?
Land plants can be broadly classed as "vascular" or "non-vascular". Vascular means having dedicated cells to transport water (xylem cells) and food (phloem cells) through the plant structure. Vascular plants (tracheophytes) : vegetables, trees Non-Vascular plants (bryophytes) : mosses and worts
What is terrestrial adaptation?
Terrestrial adaptations are exhibited by the plants and animals living in land habitats. As there are varied types of land habitats, the adaptations shown by organisms also are of diverse kinds.
What link do seed ferns represent in fossil record?
The first fossil records of vascular plants that is land plants with vascular tissues Fossil ferns and seed ferns include Pecopteris Cyclopteris
Land plants no longer required water as a medium for reproduction with the evolution what?
Land plants no longer require water as a medium for reproduction with evolution because with the evolution of seeds and pollen it is no longer needed.
Why are plants cl-assified into vascular and non vascular?
During the course of evolution vasculature in plants developed to enable them to adapt on land. Thus vascular plants grew all over the land mass. This is a major evolutionary event. Therefore, plants are classified into vascular and non-vascular.
What is an example of an ongoing trend in the evolution of land plants?
reduction of the gametophyte life cycle
What is the phylum of organisms most closely linked to the evolution of land plants?
Charophyta; Specifically stoneworts are within a green alga lineage that million of years ago gave rise to the land plants. They have a distinctive form and sex organs like land plants. -Cengage Learning
The key step in the adaptation of seed plants to dry land was the evolution of?
The key step was the development of seeds, allowing plants to reproduce without water for fertilization. This adaptation enabled seed plants to thrive in drier environments by protecting and nourishing the plant embryo.
What has the author Paul Kenrick written?
Paul Kenrick has written: 'FOSSIL PLANTS' -- subject(s): Fossil Plants, Plants, Fossil 'The origin and early diversification of land plants' -- subject(s): Plants, Cladistic analysis, Evolution, Paleobotany
What two major novelties allowed for the first colonization of terrestrial habitats by plants?
The two major novelties that allowed for the first colonization of terrestrial habitats by plants were the development of a waterproof outer layer (cuticle) to prevent water loss and the evolution of vascular tissues to transport water from the roots to the rest of the plant. These adaptations helped plants thrive on land and conduct essential processes like photosynthesis.
There are two major groups of land plants?
The two major groups of land plants are vascular plants, which have specialized tissues for conducting water and nutrients, and non-vascular plants, which do not have these specialized tissues and are typically smaller and simpler in structure. Vascular plants include ferns, conifers, and flowering plants, while non-vascular plants include mosses and liverworts.
Why might the evolution of the seed have enabled cone bearing and flowering plants to become successful in living on dry land?
The evolution of the seed enabled plants to resist harsh environments and disperse offspring more widely.For bryophytes and seedless vascular plants, single-celled spores are the only protective stage in the life cycle.
Why might the evolution of the seed have enabled cone bearing and flowering plants to become successful in living in dry land?
The evolution of the seed enabled plants to resist harsh environments and disperse offspring more widely.For bryophytes and seedless vascular plants, single-celled spores are the only protective stage in the life cycle.
How did the relative lack of water on land affect how plants evolved?
The relative lack of water on land influenced plants to develop structures like roots to absorb water and transport it throughout the plant. This led to the evolution of specialized tissues for water and nutrient uptake. It also influenced the development of mechanisms to minimize water loss, such as the evolution of cuticles and stomata.
Why was the evolution of spores important to the success of life on land?
Spores allowed plants to reproduce and disperse in a dry environment, enabling them to colonize land. Spores served as a protective mechanism against desiccation and helped plants survive in diverse habitats. This adaptation was essential for the transition of plants from aquatic to terrestrial environments.
