Study sets, textbooks, questions
Upgrade to remove ads
Terms in this set (16)
What is the relationship between choanoflagellates and animals?
Choanoflagellates are an outgroup to the animal lineages.
The phyla Porifera, Cnidaria, and Ctenophora are ________.
the most ancient of all animal lineages
Why was the evolution of a coelom a critically important innovation for animals?
The coelom can act as a hydrostatic skeleton.
Metamorphosis is ______.
a type of life cycle
The number of phyla of animals currently recognized by biologists is approximately _____.
30 to 35
What do all deuterostomes have in common?
The pore (blastopore) formed during gastrulation becomes the anus.
Which of the following is an example of homology (similarity due to common ancestry)?
cnidocytes (stinging cells) in jellyfish and sea anemones
What would occur to plants in an area if animals were excluded?
Increased plant abundance
What reproductive trait is associated with terrestrial environments?
In your body, the inside "tube" within a "tube" is derived from the _____.
What synapomorphy (shared, derived trait) distinguishes animals as a monophyletic group, distinct from choanoflagellates?
The expression of the gene dpp in the bilateral form in a variety of animals is evidence that _____.
bilateral symmetry in all animals is homologous
What is significant about cephalization?
A concentration of sensory organs allows better detection of threats for motile organisms.
Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that most animals derive their nutrition by _____.
Why do some researchers maintain that the limbs of all animals are homologous?
Homologous genes, such as Dll , are involved in their development.
Which of the following statements concerning animal taxonomy is (are) true?
1. Animals are more closely related to plants than to fungi.
2. All animal clades based on body plan have been found to be incorrect.
3. Kingdom Animalia is monophyletic.
4. Animals only reproduce sexually.
5. Animals are thought to have evolved from flagellated protists similar to modern choanoflagellates.
3 and 5
Sets found in the same folder
Bio 148 Exam III
ch 33 Protostome Animals Mastering Bio
Sets with similar terms
ch 32 pt 2
biology chapter 32 questions
Chapter 32: Animal Diversity
Other sets by this creator
CH 9 & 10
Other Quizlet sets
7th grade Chapter 6 Test
comd 400 final
Bio 1407 ²³