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Biology 1402 Exam 2 (Part 1)

This Biology 1402 Exam assesses understanding of key differences between protostomes and deuterostomes in embryonic development. Topics include germ layers, cleavage patterns, and embryonic development paths, crucial for students...

Questions: 60 | Attempts: 514 | Last updated: Mar 22, 2025

Sample Question 1
Which of the following features in embryonic development of deuterostomes does not represent a major difference from protostomes?

Pattern of blastopore formation

Radial cleavage pattern for cell division

Number of primary germ layers

The first cleavage divisions of the fertilized embryo produce identical daughter cells, and any single cell, if separated can develop into a complete organism.

The coelom is normally produced by an invagination of the archenteron.

Sample Question 2
Of the following combination of statements about protostomes and deuterostomes, which choice is correct?

Protostomes are animals in which the mouth develops from the blastopore. The anus or anal pore of protostomes develops from the second opening. Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development.

Protostomes are animals in which the anus develops from the blastopore. The mouth of protostomes develops from the second opening. Deuterostomes are animals in which the anus develops from the blastopore and the mouth develops secondarily later in their development.

Protostomes are animals in which the mouth develops from the blastopore. The anus or anal pore of protostomes develops from the second opening. Deuterostomes are animals in which the mouth develops from the blastopore and the anus develops secondarily later in their development. Protostomes are animals in which the mouth develops from the blastopore. The anus or anal pore of protostomes develops from the second opening. Deuterostomes are animals in which the mouth develops from the blastopore and the anus develops secondarily later in their development.

Protostomes are animals in which the mouth or anus develops from the blastopore, depending on the species. Deuterostomes are animals in which the mouth and anus develops from the blastopore, depending on the species.

Sample Question 3
Select the incorrect statement about deuterostomes from the following choices.

Deuterostomes demonstrate radial cleavage in their embryonic development.

Deuterostomes display indeterminate development.

A deuterostome's coelom is produced by invagination of the archenteron.

Examples of deuterostomes are echinoderms and chordates.

Includes most bilaterians, including flatworms, nematodes, mollusks, annelids and arthropods.

Block 7 Dr Yin Repro Embryo

Block 7 Dr Yin repro embryo

This quiz, titled 'Block 7 Dr Yin repro embryo,' assesses knowledge on embryological development in humans, focusing on structures like the ductuli efferentes, atretic cervix, and ductus epididymis. It's designed for students...

Questions: 14 | Attempts: 444 | Last updated: Mar 18, 2025

Sample Question
If the excretory tubules from the nephrogenic cord regress completely after the second months of development, which of the following structures in the male will not form properly?

Ductus deferens

Seminiferous tubules

Ductuli efferentes

Rete testis

Ductus epididymis

11th Grade Developmental Biology Quizzes, Questions & Answers

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