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Murljashka [212]
3 years ago
15

why are such different animals as fish amphibians reptiles birds and mammals grouped into a single phylum

Biology
2 answers:
Andrew [12]3 years ago
5 0

Answer:

Since they share common body plan (triploblastic and bilateral symmetry) and also have common key characters such as presence of notochord at any stage of their life cycle.

Explanation:

Organisms such as fish amphibians reptiles birds and mammals are grouped under phylum Chordata as they share common body plan and key characters. They all are triploblastic with three primary germ layers, bilateral symmetrical organisms that have the organ system level of body organization. These organisms have notochord, tubular nerve cord and pharyngeal gill slits at any stage of their life.  

Hence, they are grouped under the same phylum.  

lora16 [44]3 years ago
4 0
Basically because they either have beating hearts, organs, skeletons, and more that plants and other things do not

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PtichkaEL [24]

This is a symbiotic relationship between the Boxer crab and sea anemone.

<h3><u>Explanation</u>:</h3>

The symbiosis is a type of relationship between two species which has benifit for both the participating organisms.

Here in case of boxer crab, the crab gets the help from the sea anemone in the form of protection. The sea anemone chases the predators and thereby saves the organism from being hunted.

On the other hand, the sea anemone gets food from the crab's prey which he hunts.

So there's a benifit for both.

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3 years ago
According to Thorndike's law of effect,
blagie [28]

Thorndike's law of effect is described below.

Explanation:

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  • The law of effect is a psychology principle advanced by Edward Thorndike in 1898 on the matter of behavioral conditioning (not then formulated as such) which states that "responses that produce a satisfying effect in a particular situation become more likely to occur again in that situation, and responses that produce
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Kangaroos that nurse their young in a pouch are what type of mammal?
gogolik [260]

Answer:

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Marsupials, or pouched mammals, are a group of animals that includes kangaroos and koalas. ... Most marsupial babies crawl into a pouch on their mother's belly.

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