Q.How root climbers differ from stem climbers?

Root climbers hold onto a support with adventitious roots; stem climbers climb using the stem itself, either by twining or via stem tendrils.

Weak-stemmed climbing plants have evolved different structures to hoist themselves up a support, and the two are structurally quite distinct:

Root climbers:

• Produce adventitious roots at intervals along the stem, typically arising at the nodes.
• These roots do not absorb water/minerals from the support; instead, they are specialised clinging/climbing organs that grip onto the surface of a wall, tree trunk, or other support (sometimes with adhesive disc-like tips).
• Examples: Pothos/money plant, Piper betle (betel vine), English ivy (Hedera helix), Ficus pumila.

Stem climbers:

• Use the stem (or a modification of the stem) itself as the climbing device — no adventitious roots are involved in attachment. …

Root climbers cling to their support with adventitious roots produced at the nodes, while stem climbers rely entirely on the stem — twining around or gripping the support with stem-derived tendrils — with no special climbing roots involved.

Climbers are weak-stemmed plants that use some structural modification to gain mechanical support from a neighbouring object or plant while growing upward toward light. They are grouped by what structure performs the climbing function:

Root climbers: these produce adventitious roots at the nodes along the stem. These roots grow directly into or wrap tightly around the crevices/surface of the support (walls, tree trunks), anchoring the plant firmly as it grows. The stem itself does not twine or coil. Examples: Piper betle (betel vine), Pothos, Tecoma, English ivy (Hedera).

Stem climbers: the stem itself is the climbing organ, in one of two ways:

• Twiners, where the stem itself coils/twines helically around the support as it grows (e.g., Dolichos, Ipomoea). …