Question

Wilting of plant is present in

• A. Moss
• B. Fern
• C. Algae
• D. Gymnosperm

Answer 1

The correct option is D Gymnosperm

Passive absorption of water under the influence of transpiration pull is responsible for ascent of sap in higher plants. The transpiration loss of water occurs through stomata in leaves of higher plants. If theres is more water loss during transpiration than can be absorbed from soil, the plant shows wilting and leaves and other aerial parts droop down.

Algae do not show this type of water movement as they are aquatic thallophyte plants and have well developed vascular tissue.

Fern and mosses are bryophytes, which also do not have well developed sporophyte distinguished into root, stem and leaves. Well developed vascular system is absent in thallophytes and bryophytes.

Gymnosperms are the first plant group having well developed vascular system and show ascent of sap due to transpiration from leaves. In case transpiration is more than absorption; they show wilting.