What Pattern of Cleavage Is Characteristic of Mammals

question 24

Multiple Choice

What pattern of cleavage is characteristic of mammals?

• A)holoblastic cleavage with eggs containing little or no yolk
• B)some yolk, and cleavage resulting in vegetal and animal poles
• C)meroblastic cleavage with eggs containing almost entirely yolk
• D)holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass concentrated at one pole

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Definitions:

Right Atrium

The upper right section of the heart, responsible for taking in blood lacking oxygen from the body and moving it to the right lower chamber.

Left Ventricle

The chamber of the heart that pumps oxygenated blood through the aorta to the rest of the body.

Pulmonary Trunk

A major blood vessel that carries blood from the right ventricle of the heart to the lungs for oxygenation.

Superior Vena Cava

A large vein carrying deoxygenated blood from the upper half of the body to the heart's right atrium.