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Biology 1402 Exam 2 (Part 3)

This quiz, titled 'Biology 1402 Exam 2 (Part 3)', focuses on the characteristics and biological processes of echinoderms, such as sea stars. It assesses knowledge on their respiration, waste removal, reproductive modes, and water...

Questions: 60 | Attempts: 110 | Last updated: Oct 8, 2025

Sample Question 1
All of the following are true about sea stars except

They are the most familiar echinoderms.

They are the most important predators in many marine ecosystems.

They have a pigmented epidermis.

They are the only echinoderms that are fully sessile.

DNA studies can be used to make all of the following conclusions except that A. the gibbon ape line diverged about 15 million years ago. B. orangutans split off about 10 million years ago. C. gorilla lineage diverged about 8 million years ago. D. chimpanzee line diverged less than 6 million years ago. modern man remained changeless for the last 1 million years.

Sample Question 2
In many echinoderms respiration and waste removal take place by means of finger-like projections that occur near the spines, which are called

Madreporite.

Ampulla.

Nerve ring.

Papulae.

Endoskeleton.

Sample Question 3
Reproductive modes of echinoderms include all of the following except

Breaking into parts and regenerating new animals from them.

Breaking into equal parts which become two whole animals.

Developing from trochophore larvae.

External sexual reproduction produces fertilized eggs.

Fertilized eggs develop into free-swimming, bilaterally symmetrical larvae.