Unfortunately, I cannot answer this question without more context. I need to know the specific taxonomic groups in question to provide an accurate comparison of their morphological similarities. Please provide me with the specific groups you want to compare, and I will be happy to assist you.
However, I can provide some general information about morphological similarity within taxonomic groups. Morphological similarity is often used to classify organisms into different taxonomic groups. For example, animals are often classified based on their body structure, while plants are classified based on their leaves, flowers, and fruits.
Within a taxonomic group, there can be a wide range of morphological variation. This is because organisms evolve over time, and the changes they undergo can affect their physical appearance. For example, dogs are all members of the same species, but there are many different breeds of dogs with varying physical characteristics.
Even within a single breed of organism, there can be some individual variation in morphology. This is due to genetic differences between individuals. For example, even two siblings from the same litter of puppies may have slightly different fur colors or body shapes.
In general, members of the same taxonomic group tend to be more morphologically similar than members of different taxonomic groups. This is because they share a more recent common ancestor and have therefore had less time to evolve away from each other. However, there is always some variation in morphology within taxonomic groups, and this variation can be used to further classify organisms into different subgroups.
Please provide me with the specific taxonomic groups you want to compare, and I will be happy to give you a more detailed answer.