Q28 of 79 Page 48

The opening and closing of the stomatal pore depends upon

The guard cells regulate the opening and closing of stomatal pores. They swell, when water flows into the guard cells and stomatal pores get opens. Similarly, when the guard cells lose water, they shrink, become straight and the stomatal pores get closed.

More from this chapter

All 79 →
26

Which of the following equations is the summary of photosynthesis?

 27

Choose the event that does not occur in photosynthesis

 29

Choose the forms in which most plants absorb nitrogen

1. Proteins


2. Nitrates and Nitrites


3. Urea


4. Atmospheric nitrogen

 30

Which is the first enzyme to mix with food in the digestive tract?