When does a plant wilt?
When phloem is blocked
When xylem is blocked
Pith is removed
A few leaves are removed
B.
When xylem is blocked
Wilting is the loss of turgidity of leaves and other soft aerial parts of a plant causing their drooping, folding and rolling. It is caused by blocking of xylem.
What is periderm? How does periderm formation take place in the dicot stems?
Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.
Cork cambium forms tissues that form the cork. Do you agree with this statement? Explain.
A transverse section of stem is stained first with safranin and then with fast green following the usual schedule of double staining for the preparation of a permanent slide. What would be the colour of the stained xylem and phloem?
Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is
A conjoint and open vascular bundle will be observed in the transverse section of
Match the followings and choose the correct option from below
A. Meristem i. Photosynthesis, storage
B. Parenchyma ii. mechanical support
C. Collenchyma iii. Actively dividing cells
D. Sclerenchyma iv. stomata
E. Epidermal tissue v. sclereids
Options:
Match the following and choose the correct option from below
A. Cuticle i. guard cells
B. Bulli form cells ii. single layer
C. Stomata iii. waxy layer
D. Epidermis iv. empty colourless cell
Options:
Epiblema of roots is equivalent to
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