Question

Mucilaginous disc is useful for attachment with the substratum in the members of ______________ lichen.

• A. foliose
• B. crustose
• C. shruby
• D. fruticose

Hint:

Foliose lichens are loosely attached and leaf-like in appearance.

Answer 1

The Correct Option is A

Step 1: Understanding types of lichens.
Lichens are classified into crustose, foliose, and fruticose based on their thallus structure.
Step 2: Feature of foliose lichens.
Foliose lichens have leaf-like thalli and attach to the substratum with the help of rhizoids and mucilaginous discs.
Step 3: Comparison with other types.
Crustose lichens are tightly adhered to the substratum without such discs.
Fruticose lichens are shrubby and attach by a holdfast.
Step 4: Conclusion.
Thus, mucilaginous disc is seen in foliose lichens.