What are karyotypes? how are they different than punnett squares?

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

What is the statement plant growth is affected by the color light