The diagram shows a student's drawing of guard cells. Which labe is not correct?
A cell membrane
JO
B cytoplasm
C vacuole
D cell wall

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Which type of neuroglia is found outside of the brain?

Question 1 of 102 pointswhich best describes adaptive radiation? oa. geographical isolation caused by an adaptationob. biodiversity resulting from few ancestorsoc. a decrease in the rate of speciationd. adaptations that organisms teach each other