A Seed Has Three Parts: an Embryo,a Source of Food

question 39

Multiple Choice

A seed has three parts: an embryo,a source of food for the developing embryo called __________,and a protective cover.

• A)antheridium
• B)endosperm
• C)rhizoid
• D)ovule
• E)cone

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Definitions:

Glial Cells

In the central and peripheral nervous system, these are the non-neuronal cells that provide support and protection for nerve cells.

Macrophages

A kind of leukocyte that consumes and breaks down cell waste, external materials, microorganisms, and malignant cells through the process known as phagocytosis.

Cerebrospinal Fluid

A clear, colorless body fluid found in the brain and spinal cord, acting as a cushion for the brain's cortex, providing basic mechanical and immunological protection.

Cells

The basic structural, functional, and biological unit of all known living organisms, serving as the building blocks of life.