Biology
Hydathodes are located on:
- At the petiole
- Upper surface of leaves
- Lower surface of leaves
- Margins of leaves
Transpiration
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Answer
Margins of leaves
Reason — Hydathodes are the tiny pores located on leaf margins. They are responsible for guttation.
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Related Questions
The upper layer of mesophyll in a leaf consists of elongated ground tissue called:
- Spongy parenchyma.
- Palisade cells
- Xylem cells
- Phloem cells
Transpiration is significant for all except:
- Cooling effect
- Suction pull
- Ascent of sap
- Translocation of food
When guard cells are flaccid, the stoma must be:
- Open
- Neither open nor closed
- Closed
- None of these
Given below is a figure of a 'probable pathway of water through leaf cells during transpiration'. Before transpiration, certain processes occur in the cells like imbibition, evaporation, osmosis, diffusion, etc.
What will be the correct sequence for the processes A, B, C and D mentioned in the figure ?
- Imbibition, Osmosis, Diffusion, Evaporation
- Diffusion, Evaporation, Imbibition, Osmosis
- Evaporation, Diffusion, Osmosis, Imbibition
- Osmosis, Imbibition, Evaporation, Diffusion.