how single organisms are able to survive without any specific organ
Dear student
In case of single celled organism like Amoeba diffusion is the only mechanism which helps organism to perform all its cellular activities like removal of waste material, exchange of gases etc. No well defined organ system is there as whole body of organism is in direct contact with surrounding which helps to them to to get energy for their survival.
Regards
In case of single celled organism like Amoeba diffusion is the only mechanism which helps organism to perform all its cellular activities like removal of waste material, exchange of gases etc. No well defined organ system is there as whole body of organism is in direct contact with surrounding which helps to them to to get energy for their survival.
Regards