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You are watching: Whatever its ultimate cause(s), the cambrian explosion is a prime example of _____.
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Both animals and also fungi room heterotrophic. What distinguishes pet heterotrophy native fungal heterotrophy is that only pets derive their nutrition by
A) utilizing enzymes come digest your food.
B) ingesting it.
C) preying ~ above animals.
D) consuming living, rather than dead, prey.
The larvae of part insects room merely little versions that the adult, vice versa, the larvae of other insects look completely different native adults, eat various foods, and also may live in different habitats. Which of the following most directly favors the evolution of the latter, an ext radical, sort of metamorphosis?
A) changes in the homeobox genes governing early development
B) the advancement of meiosis
C) natural an option of sexually immature creates of insects
D) the beginning of a brain
E) the breakthrough of an oxidizing atmosphere on Earth
What do animals as diverse as corals and also monkeys have in common?
A) form of human body symmetry
B) human body cavity in between body wall and cradle system
C) variety of embryonic organization layers
D) presence of Hox genes
E) level of cephalization
which of the following is (are) distinct to animals?
A) cell that have actually mitochondria
B) worried conduction and also muscular movement
C) the structure carbohydrate, chitin
D) flagellated gamete
The Hox genes involved regulate every of the adhering to in what sequence, from earliest to many recent?1. Identity and position of paired appendages in protostome embryos2. Anterior-posterior orientation of segment in protostome embryos3. Placing of tentacles in cnidarians4. Anterior-posterior orientation in vertebrate embryos
A) 3 → 4 → 1 → 2
B) 4 → 1 → 3 → 2
C) 4 → 2 → 3 → 1
D) 4 → 2 → 1 → 3
E) 3 → 2 → 1 → 4
All animals can map their lineage to a usual ancestor that lived in the _____.
D) Neoproterozoic era
whatever its ultimate cause(s), the Cambrian explode is a prime example of
A) a big meteor impact.
B) mass extinction.
C) evolution stasis.
D) adaptive radiation.
i m sorry of the adhering to statements is correct?
A) Eumetazoans have actually three embryonic tissue layers.
B) Sponges space diploblastic animals.
C) All animals share a usual ancestor.
D) The origin of every extant pet phyla can be traced to the Cambrian explosion.
E) Most animal phyla belong to the clade Radiata.
part researchers case that sponge genomes have homeotic genes, but no Hox genes. If true, this recognize would
A) median that sponges should no longer be classified together animals.
B) mean that extinction sponges must have actually been the last usual ancestor that animals and also fungi.
C) confirm the identity of sponges together "basal animals."
D) combine sponges" evolutionary ties to the Eumetazoa.
E) call for sponges to be reclassified together choanoflagellates.
A sponge"s structural products (spicules, spongin) are manufactured by the
A) epidermal cells.
D) sharp cells.
How plenty of of the adhering to can be observed in the mesohyl of assorted undisturbed sponges at once or another?
A) 1 and also 2
B) 2, 3, 4
C) 1, 2, 3, and 4
D) 1, 2, 3, 4, and also 5
In terms of food capture, i m sorry sponge cell is most similar to the cnidocyte the a cnidarian?
A) sharp cell
B) epidermal cell
i m sorry of the complying with are entirely, or partly, composed of calcium carbonate?
A) coral animals" exoskeletons
B) spicules of siliceous sponges
C) molluscs" mantles
D) insects" cuticles
E) nematodes" cuticles
The members of i beg your pardon clade in the phylum Cnidaria take place only together polyps?
i beg your pardon clade in the phylum Cnidaria contains "jellies" with rounded (as opposed to boxlike) medusae?
Corals space most closely related come which group?A) freshwater hydras
C) sea anemones
Planarians lack dedicated respiratory and also circulatory equipment because
A) their flame bulbs can lug out respiratory and also circulatory functions.
B) nobody of their cells are much removed from the gastrovascular cavity or from the exterior environment.
C) their body cavity, a pseudocoelom, carries the end these functions.
D) they absence mesoderm together embryos and, therefore, lack the adult tissues obtained from mesoderm.
The larvae the many typical tapeworm species that infect humans are generally found
A) encysted in freshwater snails.
B) crawling in the ab blood vessels of cows and pigs.
C) encysted in the muscle of an animal, such as a cow or pig.
D) crawling in the intestines of cows and pigs.
A radula is current in members of i m sorry clade(s)?
B) bivalves, gastropods and chitons
C) chitons, gastropods and cephalopods
D) bivalves and also chitons
E) bivalves, gastropods and cephalopods
i beg your pardon of the adhering to is a characteristics of nematodes?
A) They have a gastrovascular cavity.
B) All species can be identified as scavengers.
C) They have a true coelom.
D) Many species are diploblastic.
See more: The Selection Of Delegates To The National Convention Produces _____
E) They have only longitudinal muscles.
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