★ Tissues Quiz
In the absence of which of the following will photosynthesis not occur in leaves?
A. Guard cells
B. Chlorophyll
C. Vacuole
D. Space between cells
Select your answer:

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Life Processes › ViewAscent of sap in plants takes place through
A. Cortex
B. Epidermis
C. Xylem
D. Phloem
Circulatory / Respiratory › View
Mammals have a _____________ chambered heart. The top two chambers are called ________________.
A. 3; atria
B. 4; atria
C. 4; ventricles
D. 3; ventricles
E. none of these