Which of the Following Features in Embryonic Development of Deuterostomes

question 15

Multiple Choice

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

• A)pattern of blastopore formation
• B)radial cleavage pattern for cell division
• C)number of primary germ layers
• D)The first cleavage divisions of the fertilized embryo produce identical daughter cells,and any single cell,if separated can develop into a complete organism.
• E)The coelom is normally produced by an invagination of the archenteron.

Understand the distinction between protostomes and deuterostomes, including developmental stages.

Recognize the unique features of cnidarians and their role in ecosystems.

Distinguish between different feeding mechanisms among invertebrates, including filter feeding.

Comprehend the general characteristics common to all animals.

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Definitions:

Melatonin

Melatonin is a hormone produced by the pineal gland that regulates sleep-wake cycles and is often used as a supplement to treat sleep disorders.

Hypothalamus

A small region of the brain that plays a crucial role in many important functions, including releasing hormones, regulating body temperature, and controlling hunger and thirst.

Sleep-Wake Cycle

The natural, cyclic pattern of sleep and wakefulness, regulated by the body's internal clock and influenced by environmental cues like light and darkness.

Growth Hormones

Peptides that stimulate growth, cell reproduction, and regeneration in humans and other animals.