Q. No.Leafbase is swollen to form pulvinus in:
1. Some leguminous plants
2. Some crucifers
3. Some monocots
4. Some cycads
Which of the following statements is false about a leaf?
1. A leaf is said to be simple, when its lamina is entire or when incised, the incisions do not touch the midrib
2. A leaf is said to be compound when the incisions of lamina reach up to the midrib breaking into several leaflets
3. Leaf is the most important vegetative organ for photosynthesis
4. Leaf is not a transpiratory organ
Leaves
(1) Arranged in acropetal manner
(2) Most important reproductive organ in plants
(3) Important for photosynthesis
(4) A typical leaf has three main parts- leaf base, Petiole and lamina
Find the incorrect statement.
Leaf
(1) Attached to the stem by the leaf base
(2) Always bear two lateral small leaf like structures called stipules
(3) Monocots have small sheath like leaf base which covers the stem wholly
(4) All leguminous plants have swollen leaf base
Which of the following parts of leaf has major role to hold the blade to light?
| 1. | Lamina | 2. | Petiole |
| 3. | Sheath | 4. | Stipule |
The fluttering of the leaf blade is facilitated by
| 1. | Swollen pulvinus |
| 2. | Membranous sheath |
| 3. | Long and thin Petiole |
| 4. | Broad lamina |
Veins and veinlets are not present in
(1) Lamina
(2) Leaf blade
(3) Leaf broader surface
(4) Leaf base
Midrib is usually not used in
(1) Middle
(2) Prominent vein
(3) A mean to provide rigidity
(4) transport only water, minerals, gases like carbon dioxide and food materials
Which of the following is relatively constant in all dicot leaves?
(1) Shape
(2) Margin, apex and surface
(3) Extent of incision
(4) Venation
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