nutrition in multi cellular organisms

• describe what a hydra is


  these are multi cellular and cylindrical with stinging tentacles at the top of their body
• what does a hydra look like

  
• where is the mouth on a hydra


  3

  
• where are the tentacles on a hydra


  1

  
• in what environment are hydras found


  in fresh water
• how do hydra attack their prey


  they sting and paralyse them ,the tentacles then move the prey into the mouth and into the hollow body cavity
• how do hydra excrete indigestible food


  though the mouth
• give an example of an anterior end


  mouth
• give an example of a posterior end


  anus