The Question is from neet-botany plant-kingdom , and it was created by the author D VINOD

Question

Which of the following algae is responsible for red tides?

D VINOD · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
 **Primary Concept**: Harmful Algal Blooms (HABs)
 **Related Topics**: Dinoflagellates, phytoplankton, marine ecology, water pollution
 **Prerequisites**: Basic knowledge of algae types and their characteristics.
## SOLUTION PATHWAY
**Given Information**:
  The question asks to identify the algae responsible for red tides.
  Options: Spirogyra, Gonyaulax, Volvox, Chlamydomonas
**Method & Steps**:
 1. Identify the type of algae associated with red tides.
  Reasoning: Red tides are caused by a rapid increase in the population of certain microscopic algae, often dinoflagellates.
  Formula/Rule: None directly applicable.
 2. Examine the given options and determine which is a dinoflagellate.
  Working: Gonyaulax is a genus of dinoflagellates known to cause red tides.
  Key Point: Not all algae cause red tides; only specific species, often dinoflagellates, are responsible.
 3. Select the correct option.
  Result: Gonyaulax (Option B) is the correct answer.
  Verification:  Research confirms that Gonyaulax species are a common cause of red tides.
 ## OPTION ANALYSIS
A :x: Spirogyra is a filamentous green alga; it is not associated with red tides.
B ✓: Gonyaulax is a dinoflagellate genus known to cause harmful algal blooms, including red tides.
C :x: Volvox is a colonial green alga; it is not associated with red tides.
D :x: Chlamydomonas is a unicellular green alga; it is not associated with red tides.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing different types of algae: Students might confuse the characteristics of various algae and incorrectly select a non-dinoflagellate option.
   How to avoid: Thoroughly review the characteristics of different algae groups and their ecological roles.
  2.Overgeneralizing about algae:  Assuming all algae are harmful or cause red tides.
   How to avoid: Understand that only specific types of algae, primarily dinoflagellates, are responsible for red tides.
 **Quick Tips**:
  1.Remember that dinoflagellates are a key player in red tides.
  2.Associate Gonyaulax with red tides as a mnemonic device.

D VINOD · Answer

Spirogyra

D VINOD · Answer

The correct Option is "Gonyaulax"

D VINOD · Answer

Volvox

D VINOD · Answer

Chlamydomonas

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