Many floating aquatic plants, such as water lilies, only contain chlorophyll in the top part of their leaves. In fact, the bottom part of a water lily is often purple because it lacks chlorophyll. This adaptation most likely occurs because
A.
nutrients are only absorbed by the top part of the leaf.
B.
water loss is reduced by having less chlorophyll.
C.
heat loss is reduced by having less chlorophyll.
D.
sunlight only hits the top part of the leaf.

In which specialized organ of the plant would these cells most likely be found

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction