All deuterostomes have ___ cleavage and ____ development. radial, determinate ra

Question

All deuterostomes have ___ cleavage and ____ development.

radial, determinate

radial, indeterminate

spiral, determinate

spiral, indeterminate

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QUESTION 2

During which life stage are Enchinoderms mobile and bilaterally symmetric?

adult

larvae

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QUESTION 3

Lack of which muscle type results in the characteristic wiggling movement of the phylum Nematoda?

Circular muscles

Longitudinal muscles

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QUESTION 4

Poriferians can be separated into three classes based on which two structures?

Ostia and osculum

Spongin and ostia

Osculum and spicules

Spicules and spongin

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QUESTION 5

The phyla Enchinodermata is most closely related to which other animal phyla?

Annelida

Chordata

Cnidaria

Mollusca

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QUESTION 6

Which body type found in animals does not have a cavity for internal organs?

acoelomate

coelomate

pseudocoelomate

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QUESTION 7

Which class of Annalida does not have setae?

Hirundinea

Oligochaeta

Polychaeta

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QUESTION 8

Which class of Cnidarians has species than can be found in freshwater habitats?

Anthozoa

Medusozoa

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QUESTION 9

Which class of Mollusca can be found on land?

Bivalvia

Cephalapoda

Gastropoda

Polyplacophora

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QUESTION 10

Which class of Mollusca has a closed circulatory system and sophisticated eye?

Bivalvia

Cephalapoda

Gastropoda

Polyplacophora

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QUESTION 11

Which class of Mollusca lacks a head?

Bivalvia

Cephalapoda

Gastropoda

Polyplacophora

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QUESTION 12

Which class of Platyhelminthes is not an endoparasite?

Cestoidea

Trematoda

Turbellaria

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QUESTION 13

Which form of Cnidarians can move through the water column?

Medusa

Polyp

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QUESTION 14

Which phylum of animals is a deuterostome?

Arthropoda

Cnidaria

Enchinodermata

Nematoda

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QUESTION 15

Which phylum of animals is not bilaterally symmetric?

Annelida

Cnidaria

Mollusca

Nematoda

radial, determinate

radial, indeterminate

spiral, determinate

spiral, indeterminate

Explanation / Answer

Ans 1 b radial, indeterminate

In Deuterosomes the divisions occur perpendicular or parallel to the polar axis which is called as radial. And the developmental fate of cells is not determined by the identity of parent cell so indeterminate.

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