Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.

12.

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?

• Red and green 

• Green and Red

• Orange and yellow

• Purple and Orange

• Parenchyma

• Xylem

• Epidermis

• Phloem

Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is

• Xylem

• Sclerenchyma

• Collenchyma

• Epidermis

A conjoint and open vascular bundle will be observed in the transverse section of

• Monocot root

• Monocot stem

• Dicot root

• Dicot stem

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:

• a. A-i, B-iii, C-v, D-ii, E-iv

• b. A-iii, B-i, C-ii, D-v, E-iv

• c. A-ii, B-iv, C-v, D-i, E-iii

• d. A-v, B-iv, C-iii, D-ii, E-i

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:

•  A-iii, B-iv, C-i, D-ii

• A-i, B-ii, C-iii, D-iv

• A-iii, B-ii, C-iv, D-i

• A-iii, B-ii, C-i, D-iv

Epiblema of roots is equivalent to

•  Pericycle

• Endodermis

• Epidermis

• Stele

Interfascicular cambium and cork cambium are formed due to

• Cell division

• Cell differentiation

• Cell dedifferentiation

• Redifferentiation