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GyanMul Prep · NEB +2 · Science · Grade 12

Biology (Science, Grade 12)

Everything on these tabs is Biology (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

GyanMul Prep · NEB +2 · Science · Grade 12

Biology (Science, Grade 12)

Everything on these tabs is Biology (Science, Grade 12) only, within NEB +2 Science · Grade 12.

Science · Grade 12 subjects

Chapter 4 of 40 · Biology (Science, Grade 12)

Transpiration

4 topics
Board exam — Plant Physiology, 11 marks across 5 chapters
20 solved questions

The cost of keeping stomata open. Types of transpiration, the guard cells that open and close them, what changes the rate, and why a plant loses most of its water on purpose.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Types of transpiration: stomatal, cuticular and lenticular
2Structure of the stomatal apparatus
3Mechanism of stomatal opening and closing
4Factors affecting transpiration and its significance