All the Following Are True of Companion Cells EXCEPT That

question 50

Multiple Choice

All the following are true of companion cells EXCEPT that they

• A) are connected to sieve-tube elements via plasmodesmata.
• B) cooperate with sieve-tube elements in conducting sugar-rich solutions.
• C) supply materials to repair the plasma membrane of sieve-tube elements.
• D) fuse together to form the sieve plates of sieve-tube elements.
• E) provide proteins and ATP to sieve-tube elements.

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Definitions:

Stage 3

A categorization in various models that typically represents a moderate level of development, severity, or progression in a process or disease.

Delivery Placenta

The stage of childbirth where the placenta, the organ that nourished the baby in the womb, is expelled from the uterus after the baby is born.

Umbilical Cord

A flexible cord-like structure containing blood vessels that connect a fetus in the uterus to the placenta, delivering nutrients and removing waste.

Hemorrhage

Excessive bleeding or blood loss, which can be internal or external and is a critical condition requiring immediate medical attention.