Which one of the following statements are correct ?
(i) In monocotyledons, the leaf base expands into a sheath covering the stem partially or wholly
(ii) In some monocotyledons plants the leaf base may become swollen, which is called the pulvinus.
(iii) Veins provide rigidity to the leaf blade and act as channels of transport for water, minerals and food materials.
(iv) The arrangement of veins and veinlets in the lamina of leaf is termed as venation.
(v) Leaves of dicotyledonous plants generally possess reticulate venation, while parallel venation is the characteristic of all monocotyledons.
(vi) When the incision of the lamina reach up to the midrib breaking it into a number of leaflets, the leaf is called compound.
(vii) In palmately compound leaf a number of leaflets are present on a common axis, the rachis, which represent the midrib of leaf.
(viii) In pinnately compound leaves, the leaflets are attached at a common point, i.e., at the tip of petiole, as in silk cotton.
(ix) Phyllotaxy is the pattern of arrangement of leaves on the stem or branch.
(x) In cymose type of inflorescence the main axis terminates in a flower.
(xi) The flowers are borne in a Acropetal order in cymose inflorescence.
(xii) In lily, the calyx and corolla are not distinct and are termed as perianth.
(xiii) When a flower can be divided into two equal halves in any radial plane passing through the centre, it is said to be actinomorphic.
(xiv) Based on symmetry, flower of Cassia and mustard are zygomorphic.
(xv) In racemose inflorescence flowers are borne in an basipetal succession.
Choose the correct option given below :-