Read the following statements and choose the following option: 1. Different-aged rock sediments contain fossils of different life-forms who probably died during the formation of the particular sediment. 2. A study of fossils in different igneous rock layers indicates the geological period in which they existed. 3. Morphological support for evolution was also proposed by Ernst Heckel based upon the observation of cert

Step-by-step solution

Embryological support for evolution was also proposed by Ernst Heckel based upon the observation of certain features during embryonic stage common to all vertebrates that are absent in adult. For example, the embryos of all vertebrates including human develop a row of vestigial gill slit just behind the head but it is a functional organ only in fish and not found in any other adult vertebrates. However, this proposal was disapproved on careful study performed by Karl Ernst von Baer. He noted that embryos never pass