Question 48 of 56
Q.The correct statement regarding Blue green algae is ________.
(a) absence of mucilage around the thallus
(b) lack of motile structure
(c) presence of floridean starch
(d) presence of cellulose in cell wall
Puducherry TnboardTamil Nadu HSC First Year (DGE) Board 2025MCQ· 1mImportance★★★★★
86% · 48/56 Questions
You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.
Start your 14-day free trial to unlock the full solution →Cyanobacteria (blue-green algae) never produce flagellated, actively motile cells — this lack of a motile structure is a defining feature, distinguishing them from most other algal groups.
Check each statement against the known biology of Cyanobacteria (Blue-green algae):
- "absence of mucilage around the thallus" — FALSE. Most blue-green algae are actually surrounded by a mucilaginous (gelatinous) sheath, which is a characteristic feature, not an absent one.
- "lack of motile structure" — TRUE. Cyanobacteria do not produce flagella at any stage of their life cycle, so they entirely lack truly motile reproductive/vegetative structures (though some filamentous forms show a slow, non-flagellar gliding movement on surfaces, this is not a "motile structure" like a flagellum). …
Unlock everything free for 14 days
- Full step-by-step solutions
- Concept-first explanations
- Methods, shortcuts & mistakes
- PYQ mapping + timed mock tests
Full access for 14 days. No credit card required.