The Most Recently Discovered Phylum in the Animal Kingdom (1995)

question 54

Multiple Choice

The most recently discovered phylum in the animal kingdom (1995) is the phylum Cycliophora. It includes three species of tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobsters. The feeding stage permanently attaches to the lobster via an adhesive disk, and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia. The body is sac-like and has a U-shaped intestine that brings the anus close to the mouth. Cycliophorans are eucoelomate, do not molt (though their host does) , and their embryos undergo spiral cleavage.
-On the basis of the cleavage pattern of cycliophoran embryos, which of these should be true?

• A) It has determinate development.
• B) The blastopore becomes the anus.
• C) They are deuterostomes.
• D) A cell separated from a four-cell embryo should develop into a complete organism.

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Definitions:

Capital Budgeting

The approach of orchestrating and administering a business's enduring investments towards major initiatives or assets.

Straight-Line Depreciation

A scheme for apportioning the cost of a concrete asset over its lifespan in steady yearly payments.

Capital Budgeting

The process of evaluating and selecting long-term investments that are in line with the goal of shareholder value maximization, such as new machinery, replacement of machinery, new plants, and research development projects.

Straight-Line Depreciation

An approach for distributing the cost of a physical property over its useful life in uniform annual sums.