Fill in the blanks and choose the correct option.

I. Stem is generally ___(i)___ when young.

II. In wheat, large number of roots originate from base of stem and constitute ___(ii)___ root system.

III. Cylindrical stems of ___(iii)___ contain chlorophyll and carry out photosynthesis.

IV. ___(iv)___ provides rigidity to leaf blade and act as channel of transport.

• A

  (i) Woody, (ii) Adventitious, (iv) Petiole

• B

  (ii) Fibrous, (iii) Opuntia, (iv) Stipules

• C

  (i) Green, (iii) Euphorbia, (iv) Veins

• D

  (i) Green, (ii) Tap, (iii) Euphorbia