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 margin

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

Photosynthetic organ originates from _______ meristem and arranged in _______ order.

1.  Lateral, basipetal

2.  Root apical, acropetal

3.  Shoot apical, acropetal

4.  Intercalary, acropetal

Select the odd one out with respect to veins

1.  Provide rigidity to the leaf blade

2.  Act as channels of transport for water and minerals

3.  Veins are filled with parenchyma

4.  Middle prominent vein is mid-rib

Leaves originate from-

1. shoot apical meristems and arranged acropetal order

2. shoot apical meristem and arranged in a basipetal order

3. root apical meristem

4. stem

Which of the following statement is true? 

1. In Alstonia the petioles expand, become green, and synthesize food.
2. Leaves are modified into tendrils for climbing as in pumpkins.
3. Imbricate aestivation of petals occur in the flower of Calotropis.
4. In palmately compound leaves the leaflets are attached at a common point

Veins of leaf in addition to acting as channels of transport of water, minerals and food materials also

1.  Determine the extent of incision of the lamina

2.  Provide rigidity to the leaf blade

3.  Hold the leaf blade to light

4.  Flutter the leaf in wind thus, helping in cooling of leaf and bringing fresh air

Leaf is

Consider the following statements:

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Leafbase is swollen to form pulvinus in:

(1) Some leguminous plants              

(2) Some crucifers

(3) Some monocots                           

(4) Some cycads

Study the following statements and choose the correct option.

I. Buds are present in the axil of leaflets of the compound leaf.

II. pulvinus leaf-base is present in some leguminous plants.

III. In Alstonia, the petioles expand, become green and synthesize food.

IV. Opposite phyllotaxy is seen in guava.

1. II and IV are correct but I and III are wrong

2. I and III are correct but II and IV are wrong

3. I and IV are correct but II and III are wrong

4. II, III and IV are correct but I is wrong