Which of the following parts of leaf has major role to hold the blade to light?

(1) Lamina

(2) Petiole

(3) Sheath

(4) Stipule

(1) Swollen pulvinus

(2) Membranous sheath

(3) Long and thin Petiole

(4) Broad lamina

(1) Lamina

(2) Leaf blade

(3) Leaf broader surface

(4) Leaf base

(1) Middle

(2) Prominent vein

(3) A mean to provide rigidity

(4) transport only water, minerals, gases like carbon dioxide and food materials

(1) Shape

(2) Margin, apex and surface

(3) Extent of incision

(4) Venation

(1) Venation

(2) Vernation

(3) Vernalization

(4) Phyllotaxy

(1) The leaves of dicot plants show reticulate venation

(2) The leaves of monocot plants show parallel venation

(3) The network of veinlets is termed as reticulate venation

(4) All of these

1. Do not have any incisions

2. Always intact lamina

3. Incisions of the lamina reach to midrib

4. Entire lamina or when incisions do not reach to midrib

1. Has leaflets or incised lamina without leaflets

2. Incisions reach to midrib

3. Axils of leaflets have bud

4. All of these

(1) A prominent vein

(2) Midrib

(3) Found in pinnately compound leaf

(4) All of these