As Plants Grow Above Ground by Adding New Stem and Leaf

question 24

Multiple Choice

As plants grow above ground by adding new stem and leaf tissues, the demand for water increases due to transpiration. One of the ways this demand is met is through the development of new root apical meristems. Why is it that root meristems can develop anywhere along the root?

• A)Root meristems develop from the pericycle, a tissue present along the length of the root.
• B)Root meristems develop from the cortex, a tissue present along the length of the root.
• C)Root meristems develop wherever there is a high concentration of oxygen gas in the soil.
• D)Root meristems develop wherever there is a high concentration of nitrogen gas in the soil.

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A method used to prevent pregnancy after unprotected sex or a known or suspected contraceptive failure.

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A hormonal medication used as emergency contraception to prevent pregnancy after unprotected sex or contraceptive failure.

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A medication used for emergency contraception to prevent pregnancy after unprotected sex or failure of other birth control methods.

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