Biology 1104 Exam 2 Questions with

Biology 1104 Exam 2 Questions with Complete Solutions How do we know if something belongs to Kingdom Animalia?

• Correct Answers ✅-Multicellular

-No Cell Walls -Heterotrophic (eats other living things) -Specific life cycle (eggs/sperm ar single-celled, multicellular after fertilization) Four important developments in animal evolution? - Correct Answers ✅1. True Tissues

• Body Symmetry
• Complete digestion
• Coelom

Tissues - Correct Answers ✅Layers of specific types of cells that allow that tissue to carry out a particular function Three Tissue layers - Correct Answers ✅Ectoderm - skin, nervous system Endoderm - digestive system Mesoderm - muscles, bone Why are tissues an important evolutionary development?That is, how does having tissues make animals better adapted? - Correct Answers ✅Allows for differentiation and specialized functions, allows coordination among cells 1 / 2

Biology 1104 Exam 2 Questions with Complete Solutions Coelom - Correct Answers ✅Hollow, fluid filled internal cavity that acts as a protective cushion for internal organs Why is a coelom an important evolutionary development? - Correct Answers ✅Protects internal organs, allows for better movement/flexibility, allows for development of organs Sponges - Correct Answers ✅Porifera, all contain internal system of pores and canals Sponges are the only phylum of animals with what? - Correct Answers ✅Totipotent cells. Any cell gan give rise to any other type of cell Protostome - Correct Answers ✅"mouth first", mouth is the first hole to develop as an embryo Deuterstomes - Correct Answers ✅"Mouth second", anus is the first hole to develop Why is a complete digestive system an important development? - Correct Answers ✅More efficient digestion

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