Tissues, Organs & Evolutionary Trends — NEET Biology
📚 Practice ConceptFor example, our heart consists of all the four types of tissues, i.e., epithelial, connective, muscular and neural. We also notice, after some careful study that the complexity in organ and organ systems displays certain discernable trend. This discernable trend is called evolutionary trend (You will study the details in class XII). In this chapter, you are being introduced to morphology and anatomy of frog. Morphology refers to study of form or externally visible features. In the case of plants or microbes, the term morphology precisely means only this. In case of animals this refers to the external appearance of the organs or parts of the body. The word anatomy conventionally is used for the study of morphology of internal organs in the animals. You will learn the morphology and anatomy of frog representing vertebrates.
Which of the following statements are NOT correct regarding the structural organisation in animals? S1: Morphology in animals solely refers to the study of the internal arrangement of organs. S2: Anatomy is the conventional term used for the study of the external appearance of the body or its parts in animals. S3: The complexity in organ and organ systems across different animal groups does not show a discernable evolutionary trend. S4: A tissue is defined as a group of dissimilar cells that perform various unrelated functions in the body. S5: All complex animals are composed of only four basic types of tissues which are organised into organs and organ systems.
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