Root Physiology Test

Root Physiology Test
Please fill out your email address in the first box and your name, ISA cert. no. & specialty in the second box. Answer the questions below and when you are finished, press submit.

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Question: 1. The roots of trees are required for:
anchorage.
the storage of starch.
absorption of nutrients and water.
all of the above.

Question: 2. The root cap:
elongates to reach mature dimensions.
is differentiated into the epidermis and cortex.
is composed of loosely packed round tissue cells.
is the part of the root is at its very tip.

Question: 3. The apical meristem:
generates the cells that form the root cap and the region of elongation.
protects the tip of the root.
is differentiated into the epidermis and cortex.
is composed of loosely packed round tissue cells.

Question: 4. The region of root hairs:
is composed of loosely packed round tissue cells.
is differentiated into the epidermis and cortex.
elongates to reach mature dimensions.
is the active cell division region.

Question: 5. The root cortex:
is composed of loosely packed round tissue cells.
elongates to reach mature dimensions.
is the active cell division region.
protects the tip of the root.

Question: 6. The xylem:
is comprised of sieve elements and companion cells.
transports water and substances from the roots to the leaves.
consists of parenchyma cells just inside the endodermis.
stores energy reserves.

Question: 7. Phloem:
transports water and substances from the roots to the leaves.
consists of parenchyma cells just inside of the endodermis.
stores energy reserves.
is comprised of sieve elements and companion cells.

Question: 8. The cambial zone:
elongates to reach mature dimensions.
is the active cell division region.
protects the tip of the root.
forms between the xylem and phloem.

Question: 9. Lateral roots:
provide a more uniform tree growth.
provide secondary growth.
form between the xylem and phloem.
form behind the region of root hairs.

Question: 10. The periderm:
is the active cell division region.
provides secondary growth.
is the outer bark.
all of the above.

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