Anything that relates to sexual reproduction (gametes coming together to fertilize) should be crossed off.
Not much context was provided but you can look back to some other questions I've answered, I have a full in-depth answer to the same question another person had.
D. Plants have adapted to deal with the sun in many different ways, and this is one. The stomata are regulated by guard cells, which are activated by different things depending on the species of plant, and guard cells are supposed to keep the stomata from staying open all the time and losing too much water to evaporation. So, the solution is to have the stomata on the bottom of the leaf to prevent direct sunlight contact (and therefore more evaporation), and guard cells to protect the stomata.
Organ system is the answer according to me if it is one word question
Answer:
.I do not have an answer for this
The thalamus is a bundle of about twelve nuclei in which every sense except smell has a synapse; it is the "gateway" to the cerebral cortex. The correct answer to blank above is "is a bundle of about twelve nuclei in which every sense except smell has a synapse; it is the "gateway" to the cerebral cortex".