Bio 242 2025/2026 Exam Questions and
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Animal Characteristics - 🧠 ANSWER ✔✔multicellular, eukaryotes,
heterotrophs, tissues that develop from embryonic layers, no cell wall,
reproduce sexually, digest food internally, hox genes
Hox genes - 🧠 ANSWER ✔✔series of genes that controls the differentiation
of cells and tissues in an embryo
Tissues - 🧠 ANSWER ✔✔Groups of cells that are similar in structure and
function
, Eumetazoa - 🧠 ANSWER ✔✔clade of animals with true tissues e.g. all
animals except proferia (sponges)
Diploblastic animals - 🧠 ANSWER ✔✔Have only two germ layers, the
ectoderm and the endoderm, and lack true digestive system.
Triploblastic animals - 🧠 ANSWER ✔✔Have three germ layers: ectoderm,
mesoderm (gives rise to muscles and organs), endoderm.
body cavity - 🧠 ANSWER ✔✔Cushion the suspended organs, fluid in the
body cavity act as skeleton for support, internal organs can grow and move
independently of outer body wall.
coelom - 🧠 ANSWER ✔✔fluid-filled body cavity lined with mesoderm
hemocoel - 🧠 ANSWER ✔✔The primary body cavity of most invertebrates,
containing circulatory fluid. Develops between mesodermal and endoderm
Bilateria - 🧠 ANSWER ✔✔Members of the branch of eumetazoans
possessing bilateral symmetry.
Cambrian explosion - 🧠 ANSWER ✔✔A burst of evolutionary origins when
most of the major body plans of animals appeared in a relatively brief time
Answers 100% Guaranteed Success |
Already Rated A+
Animal Characteristics - 🧠 ANSWER ✔✔multicellular, eukaryotes,
heterotrophs, tissues that develop from embryonic layers, no cell wall,
reproduce sexually, digest food internally, hox genes
Hox genes - 🧠 ANSWER ✔✔series of genes that controls the differentiation
of cells and tissues in an embryo
Tissues - 🧠 ANSWER ✔✔Groups of cells that are similar in structure and
function
, Eumetazoa - 🧠 ANSWER ✔✔clade of animals with true tissues e.g. all
animals except proferia (sponges)
Diploblastic animals - 🧠 ANSWER ✔✔Have only two germ layers, the
ectoderm and the endoderm, and lack true digestive system.
Triploblastic animals - 🧠 ANSWER ✔✔Have three germ layers: ectoderm,
mesoderm (gives rise to muscles and organs), endoderm.
body cavity - 🧠 ANSWER ✔✔Cushion the suspended organs, fluid in the
body cavity act as skeleton for support, internal organs can grow and move
independently of outer body wall.
coelom - 🧠 ANSWER ✔✔fluid-filled body cavity lined with mesoderm
hemocoel - 🧠 ANSWER ✔✔The primary body cavity of most invertebrates,
containing circulatory fluid. Develops between mesodermal and endoderm
Bilateria - 🧠 ANSWER ✔✔Members of the branch of eumetazoans
possessing bilateral symmetry.
Cambrian explosion - 🧠 ANSWER ✔✔A burst of evolutionary origins when
most of the major body plans of animals appeared in a relatively brief time
