Microphylls Differ from Megaphylls in That

question 181

Multiple Choice

Microphylls differ from megaphylls in that

• A) microphylls are derived from female tissues, and megaphylls are derived from male tissues.
• B) microphylls are thought to have evolved from sterile sporangia, whereas megaphylls evolved from modified branches.
• C) microphylls have small xylem cells in their vascular tissue, whereas megaphylls have large xylem cells.
• D) microphylls are thought to have evolved from small flaps of photosynthetic tissue between branches, whereas megaphylls evolved from large flaps of tissue between branches.
• E) microphylls evolved before stomata, and megaphylls evolved after stomata.

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Definitions:

Passive Immunity

Protection against infection, acquired by transfer of antibodies to a susceptible individual.

Antivenom

A substance, typically serum or a purified antibody, used to treat venomous bites and stings by neutralizing the specific toxins involved.

Antibodies

Proteins produced by the immune system that recognize and bind to specific antigens, helping to protect the body from pathogens.

Cytotoxic T Cell

A type of immune cell capable of killing cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.