Question
The micrograph shows the cross-section of the vascular tissue in a dicotyledonous root. Which letter identifies phloem sieve tubes?
▶️Answer/Explanation
Ans:C
Question
The image shows part of a section through the stem of a non-woody plant. Where does transport of sucrose occur?
▶️Answer/Explanation
Ans:D
Question
An individual was presented with a stimulus resulting in the release of epinephrine. What was the most likely nature of the stimulus?
A. Sunset and the onset of darkness
B. An image of a close friend
C. The intake of glucose
D. A coach shouting to begin physical activity
D
Question
When intense physical activity is anticipated, which factor in the blood will increase the frequency of sinoatrial signals to heart muscle?
A. pH
B. Oxygen level
C. Thyroxin
D. Epinephrine
Ans:D