what will happen if the earthworm living in soil placed in pond
Answers
Nothing with happen Metamorphosis is a biological process by which an animal physically develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation.
Answer:
Look closely at the earthworm’s skin. Does it look wet to you? Maybe a little bit moist? You might already know that we find earthworms in damp soil, and perhaps you have seen earthworms crawling on the ground right after a hard rain or a major storm. Why do
you think this is? If you answered that an earthworm needs to live in a damp environment – but not too damp – you’re right! To understand the reason why, though, we need to look a little more closely.
Earthworms certainly don’t look like humans – and one difference between earthworms and us is the way that we breathe. Earthworms need oxygen just like humans, but they don’t have lungs like we do. They have a special skin that allows them to “breathe” oxygen right through it. How does this work? It has to do with a science concept called diffusion.
Diffusion is the movement of molecules from an area of higher concentration (think crowded) to an area of lower concentration (less crowded). Diffusion allows an earthworm to get the oxygen it needs to survive. Remember, an earthworm needs oxygen just like we do, and its cells are constantly using oxygen to perform cell processes. This means the amount of oxygen inside the earthworm will always be less (lower concentration) than the area outside of the earthworm (higher concentration). This is great news for the earthworm! New oxygen from the environment is constantly diffusing into the cell to replace the oxygen that is used up.