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What evolutionary advancements do the cnidarians have that are not present in poriferans?
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Are organs present in cnidarians?
no
What presence of segmentation do cnidarian's have?
The is no segmentation present in cnidarians
Do porifera have nerve cells?
No , Poriferans lack typical neuron cells but they possess some neuron like cells which regulate flow of water . These cells are present around porosites .
What are the appendages in cnidaria?
Appendages in cnidarians are called tentacles . They are used in food capture and defense . Stinging cells are present in tentacles .
How long have cnidarians been on earth?
The earliest animal fossils where rather modern-looking cnidarians, possibly from around 580 millionyears ago. They've been around for a long time!The earliest animal fossils where rather modern-looking cnidarians, possibly from around 580 millionyears ago. They've been around for a long time!They are present in fossils form since Cambrian times , and were present in Proterozoic Era .
What is a simle nervous system?
A nerve net or diffused nervous system is called simple nervous system as present in cnidarians .
What is an evolutionary?
If two organisms share an evolutionary relationship, that means that they have a common ancestor on the evolutionary tree. The more recently the shared common ancestor lived, the more closely related the two present organisms are, evolutionarily.
Which structure has been present in Earth's living organisms for the least amount of evolutionary time?
nuclei
What are the five evolutionary forces that act on the hardy weinberg principle?
The evolutionary influences present in the Hardyâ??Weinberg principle are mate choice, mutation, selection, genetic drift, gene flow and meiotic drive.
Is reproductive isolation a factor that is necessary for the formation of a new species?
at present ,yes,but hopefully new scientific advancements will improve the situation
What are some examples of specialized cells present in cnidarians?
Some examples of specialized cells in cnidarians include cnidocytes (stinging cells) used for defense and capturing prey, sensory cells for detecting movement and light, and muscle cells for movement and contraction. Additionally, some cnidarians have specialized cells that secrete mucus or digestive enzymes for feeding.
Present- day taxonomists attempt to group organisms according to what?
Present-day taxonomists attempt to group organisms according to their evolutionary relationships, genetic similarities, and shared characteristics. This helps to organize and classify living organisms into hierarchical categories based on their shared ancestry and unique characteristics.
