Chapter 32 - An Overview of Animal Diversity

M brevicollis

________, for example, possesses genes that encode domains of certain proteins (known as cadherins) that play a role in cell adhesion.

Animal evolution

________ has lasted more than half a billion years (as shown in the image attatched)

Eumetazoan embryos

________ can be diploblastic (two germ layers) or triploblastic (three germ layers) (three germ layers)

meiotic division

Unlike plants and fungi, sperm and egg cells are generated directly via ________ in the haploid stage.

biochemical evidence

Animals first appeared around 700 million years ago, according to fossil ________ and molecular clock studies.

cleavage

Patterns of ________, coelom formation, and blastopore destiny frequently change between protostome and deuterostome development.

Animals

________ are eukaryotes, and they, like plants and the majority of fungi, are multicellular.

Plants

________ are autotrophic eukaryotes that produce organic compounds via photosynthesis.

Fungi

________ are heterotrophic organisms that grow on or near their food and eat by absorption (typically after releasing enzymes that break down the food outside their bodies)

functional area

A domain is a protein's important structural or ________.

emergence of multicellularity

Scientists studying how animals evolved from single- celled predecessors have discovered that the ________ necessitates the creation of novel mechanisms for cells to adhere (attach) and signal (communicate) to one another.

genuine coelom

A pseudocolor or a(n) ________ can be found in triploblastic animals having a body cavity.

structural support

Proteins beyond the cell membrane, on the other hand, offer ________ to animal cells and connect them to one another.

Cleavage

________ occurs throughout the development of most animals and results in the creation of a multicellular embryonic stage known.

plants

Animals, unlike ________ and fungi, lack the structural support of cell walls.

Animals

________ that are bilaterally symmetrical have dorsal and ventral sides, as well as anterior and posterior ends.

Animals

________ can be asymmetric, or they can have radial or bilateral symmetry.