Statement I: | Stem tendrils which develop from axillary buds are slender and spirally coiled and help plants to climb such as in Citrus and Bougainvillea. |
Statement II: | Axillary buds of stems may get modified into woody, straight and pointed thorns found in many plants such as gourds and grapevines. |
1. | Statement I is correct; Statement II is correct |
2. | Statement I is incorrect; Statement II is correct |
3. | Statement I is correct; Statement II is incorrect |
4. | Statement I is incorrect; Statement II is incorrect |
COLUMN I [Modification of plant part] |
COLUMN II [Example] |
||
A | Leaf spine | P | Pea |
B | Leaf tendril | Q | Bougainvillea |
C | Stem tendril | R | Cucumber |
D | Stem thorn | S | Cactus |
A | B | C | D | |
1. | P | R | Q | S |
2. | S | R | P | Q |
3. | S | P | R | Q |
4. | S | P | Q | R |
Column I [Family] |
Column II [Floral diagram] |
||
A | Brassicaceae | P | |
B | Fabaceae | Q | |
C | Solanaceae | R | |
D | Liliaceae | S |
A | B | C | D | |
1. | Q | P | R | S |
2. | Q | P | S | R |
3. | P | Q | R | S |
4. | P | Q | S | R |
1. | united into one bundle |
2. | united into two bundles |
3. | united into more than two bundles |
4. | having filaments with variable length |
I: | In a typical dicotyledonous embryo, the portion of the embryonal axis above the level of cotyledons is the epicotyl, which terminates with the plumule or stem tip. |
II: | In a typical dicotyledonous embryo, the cylindrical portion below the level of cotyledons is hypocotyl, and it terminates at its lower end in the radicle or root tip. |
III: | In the grass family, the cotyledon is called the scutellum, which is situated towards one side (lateral) of the embryonal axis. |
IV: | At its lower end, the embryonal axis in monocots has the radical and root cap enclosed in an undifferentiated sheath called coleorhiza. |
V: | In monocots, the portion of the embryonal axis above the level of attachment of the scutellum is the epicotyl. |
1. | 2. | ||
3. | 4. |