I: | In majority of the dicotyledonous plants, the direct elongation of the radicle leads to the formation of primary root which grows inside the soil. |
II: | It bears lateral roots of several orders that are referred to as secondary, tertiary, etc., roots. |
III: | The primary roots and its branches constitute the tap root system, as seen in the mustard plant. |
I: | holding the leaf blade to light. |
II: | cooling the leaf. |
III: | bringing fresh air to leaf surface. |
Statement I: | The mode of arrangement of sepals or petals in floral bud with respect to the other members of the same whorl is known as aestivation. |
Statement II: | The arrangement of ovules inside the ovary in an angiosperm is called as placentation. |
Statement I: | The flower is epigynous |
Statement II: | Such a flower is seen in rose, plum and peach |
Statement III: | The position of ovary will be described as superior |
1. | Statement I is correct; Statement II is incorrect; Statement III is correct |
2. | Statement I is incorrect; Statement II is correct; Statement III is correct |
3. | Statement I is correct; Statement II is correct; Statement III is incorrect |
4. | Statement I is incorrect; Statement II is incorrect; Statement III is correct |
Placentation | Feature | |
I: | Marginal | the ovules develop on the inner wall of the ovary or on peripheral part |
II: | Axile | the ovules are borne on ridge along the ventral suture forming two rows |
III: | Basal | the ovules are borne on central axis and septa are absent |
I: | Epipetalous stamens are found in brinjal. |
II: | Epiphyllous stamens are found in lily. |
III: | Carpels are apocarpous in mustard and tomato. |
IV: | Carpels are syncarpous in lotus and rose. |
A. | Axile | Argemone |
B. | Parietal | Dianthus |
C. | Free central | China rose |
A | B | C | D | |
1. | Glume | Wings | Keel | valvate |
2. | Standard | Wings | Keel | Valvate |
3. | Standard | Keel | Wings | Vexillary |
4. | Standard | Wings | Keel | Vexillary |