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External - page 2
What is an external structure?
Structure. All organisms, or living things, have external structures. 'External' means 'outer. ' A plant's external structures include roots, stems, l...
Name the organs of external respiration?
External respiration- exchange of gases between the air and the blood in the lungs…. oxygen diffuses into the blood, carbon dioxide diffuses into the ...
What do external nares do?
anterior nares (or nostrils; exterior nares) allow air to enter the nose and pass into the nasal cavity. Individually, each opening is referred to as ...
What are the two parts of external respiration?
External respiration, also known as breathing, involves both bringing air into the lungs (inhalation) and releasing air to the atmosphere (exhalation)...
What animals fertilise externaly?
Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, se...
What animals use external reproduction?
Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, se...
List of animals that have external fertilization?
Salmon, cod, trout, and char are all examples of the fish that externally fertilize. The female and male both release their gametes into the water, wh...
Give at least 3 examples of animals which undergo internal and external fertilization?
This occurs in most bony fish, many reptiles, some cartilaginous fish, most amphibians, two mammals, and all birds. What are the examples of animals t...
What are the disadvantages of external fertilisation?
Disadvantages of External FertilizationA large quantity of gametes is wasted and left unfertilized.Chances of fertilization are diminished by environm...