Multiple ChoiceWhich of the following is an example of a negative tropism related to phototropism?30views
Multiple ChoiceHow would a houseplant typically respond to sunlight that comes from only one direction?57views
Multiple ChoiceWhich pigment is primarily responsible for detecting the photoperiod in plants?296views
Multiple ChoiceWhich of the following plant growth responses is primarily due to the action of auxins?276views
Multiple ChoiceThe face of a sunflower turns to follow the sun as it moves across the sky. This is an example of:26views
Multiple ChoiceYou are interested in determining what part of a plant senses the light, which leads to phototropism. A good first experiment would be to __________. 942views
Multiple ChoiceSome seeds require light for germination. This process is controlled by the phytochrome system. Which of the following germination treatments would inhibit germination of such seeds? 1075views
Multiple ChoiceAn Alaskan trapper worried about being attacked by grizzly bears left the lights on in his cabin all the time. Plants just outside the cabin flowered a month early. Which of the following best explains this? 1062views1rank
Multiple ChoiceA certain short-day plant flowers when days are less than 12 hours long. Which of the following treatments will result in flowering? 1002views