Sub-aerial modification of stem | Example | |
1. | Runner | Oxalis |
2. | Stolon | Peppermint |
3. | Offset | Pistia |
4. | Sucker | Eicchornia |
I. | Root cap protects the tender apex of the root |
II. | Region of elongation is proximal to region of meristematic activity |
III. | Region of maturation has root hairs |
I: | Axillary buds may get modified into thorns as in gourds. |
II: | Stem tendrils develop from axillary buds as in Citrus. |
Column I | Column II | ||
A. | Scutellum | 1 | Anchorage |
B. | Coleorhiza | 2 | Protects radicle |
C. | Coleoptile | 3 | Protects plumule |
D. | Radicle | 4 | Acts as cotyledon |
1. | In cymose inflorescence, the main axis continues to grow, while in racemose, the growth is limited. |
2. | Racemose inflorescence has flowers with a pedicel, whereas cymose often does not. |
3. | In racemose inflorescence, the oldest flowers are at the top, unlike in cymose, where they are at the bottom. |
4. | Racemose inflorescence exhibits indefinite growth, while cymose shows definite growth. |
1. | Bilateral symmetry and inferior ovary. |
2. | Flowers arranged in a head (capitulum) inflorescence. |
3. | Presence of both male and female flowers on different plants. |
4. | Flowers with 6 petals and 6 sepals. |
1. | Tap roots are the main roots from which other roots sprout laterally, while fibrous roots have no main root but many branching roots. |
2. | Fibrous roots grow deep into the soil, while tap roots spread out near the soil surface. |
3. | Tap roots are found in monocots, while fibrous roots are found in dicots. |
4. | Fibrous roots store food, whereas tap roots do not store food. |
1. | Root cap, zone of elongation, zone of maturation, meristematic zone |
2. | Meristematic zone, zone of elongation, zone of maturation, root cap |
3. | Root cap, meristematic zone, zone of elongation, zone of maturation |
4. | Zone of maturation, zone of elongation, root cap, meristematic zone |
Column I | Column II | ||
A | Valvate | P | Petals just touching each other |
B | Imbricate | Q | One petal covering another, the next one is covered by another and so on |
C | Twisted | R | One margin of a petal overlaps that of the next one and so on |
D | Vexillary | S | Large petal covers smaller petals, which are not overlapping |
A | B | C | D | |
1. | P | Q | R | S |
2. | Q | P | S | R |
3. | S | P | R | Q |
4. | Q | S | R | P |