Download Seasonal Changes in Plants Quiz Answers

Seasonal Changes in Plants Quiz Answers
1. True or False: Plants can readily tell what month it is.
false 2. True or False: Plants can readily tell the length of darkness each 24
hour period.
true 3. What is a season?
A season is a subdivision of the year due to a change in weather, ecology, and hours of daylight. 4. What is a long day plant?
A long day plant flowers when the length of daylight exceeds the necessary photoperiod. 5. Why do leaves fall off certain plants? Explain your answer.
Leaves fall off of some trees because of photoperiodism. In the fall, when the days start to get shorter, the trees sense that there is less sunlight. The plant is stimulated, and it sends messages telling the leaves to change colors and fall. 6. In California, a certain long day plant has a photoperiod of 14 hours.
When is this plant most likely to bloom?
a) February
b) April
c) July
d) September
7. Which of the following are short-day plants?
a) cotton, rice and lettace
b) cotton, rice and sugar cane
c) lettuce, wheat and turnips
d) cotton, lettuce and wheat
8. How do plants determine the time of year?
a) By the change in temperature
b) By the length of daylight and darkness.
c) By the amount of rain.
d) By both the temperature changes and length of daylight.
9. More flowers bloom during the spring and summer than other months.
This means that
a) there are more long-day plants than short–day plants.
b) there are more short-day plants than long-day plants.
c) plants like the warm temperatures.
d) both (a) and (c) are correct.
10. Why do leaves change color in the fall?
a) It is a response to additional precipitation.
b) It is a response to the decrease in temperature.
c) It is a response to a shortened length of day.
d) all of the above