We learned about many different animal phyla. How do scientists classify animals to determinewhich phyla they belong to?
a. Adult Body Plan
b. Embryological Development
c. Animal Body Sized.
d. Both a and b are correct
both a and b
d. Both a and b are correct.
Scientists classify animals into different phyla based on multiple criteria, and two key factors are the adult body plan and embryological development.
1. Adult Body Plan: This refers to the overall structure and arrangement of an animal's body parts. Scientists observe the anatomical features and characteristics of adult individuals to determine their phylum. For example, the presence or absence of certain body systems, such as digestive, circulatory, respiratory, and nervous systems, can help identify the phylum to which an animal belongs.
2. Embryological Development: This refers to the changes and processes that occur from fertilization to the development of a fully formed organism. Scientists study the early embryonic stages of animals to identify similarities and differences in the development of different phyla. They look for traits like tissue layers, body symmetry, and cell differentiation, among others, to determine the phylum to which an animal belongs.
By considering both the adult body plan and embryological development, scientists can classify animals into distinct phyla, which helps organize and understand the diversity of animal life.
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