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Standard XII
Biology
Question

Rhizoids in Riccia are
  1. Unicellular tuberculate
  2. Unicellular smooth-walled
  3. Multicelhllar smooth-walled and tuberculate
  4. Both smooth-walled and tuberculate unicellular

A
Unicellular tuberculate
B
Multicelhllar smooth-walled and tuberculate
C
Unicellular smooth-walled
D
Both smooth-walled and tuberculate unicellular
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Solution
Verified by Toppr

The correct option is C Both smooth-walled and tuberculate unicellular
The rhizoids are unicellular and unbranched. They anchor the thallus to the substratum and are usually of two types, smooth walled and tuberculated. Rhizoids are present in the mid-rib region of thallus.
So, the correct answer is 'Both smooth-walled and tuberculate unicellular'

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