The Cylinders in This Experiment Represent a 24-Hour Period

question 50

True/False

The cylinders in this experiment represent a 24-hour period. The light area represents light periods during a 24-hr. period and the dark area represents dark periods during a 24-hr. period. The critical length of dark vs. light periods for flowering is depicted by the dotted line. Note that some plants are flowering and some are not flowering. Study the results of this experiment on photoperiodism and flowering to determine whether the following statements are true or false.
-Went's experiment in 1926 with oat coleoptiles showed that agar that absorbed auxin from the tips would cause a tipless shoot to curve away from the side where he had placed the agar,suggesting that auxin causes cells to elongate.

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Definitions:

The Cat In The Hat

A classic children's book by Dr. Seuss featuring a mischievous cat who turns a dull, rainy day into an adventurous one for two young siblings.

Placenta

An organ formed in the uterus during pregnancy that provides oxygen and nutrients to the fetus while removing waste products.

Nourishment

The sustenance necessary for growth, health, and good condition, often referring to the food and drink that provides essential nutrients.

Fetal Period

The stage of human development that begins at the end of the embryonic period (around week 9) and continues until birth.