Question

Under the Kingdom Protista, which organisms, often called 'golden algae', are placed along with diatoms?

• A. Dinoflagellates
• B. Desmids
• C. Slime moulds
• D. Euglena

Hint:

Remember the important Protista groups: \[ \boxed{\text{Chrysophytes} \rightarrow \text{Diatoms + Desmids (Golden algae)}} \] \[ \boxed{\text{Euglenoids} \rightarrow \textit{Euglena}} \] \[ \boxed{\text{Dinoflagellates} \rightarrow \text{Red tides}} \] Golden algae are commonly referred to as desmids in NCERT.

Answer 1

The Correct Option is B

Concept: According to the NCERT classification, Kingdom Protista includes chrysophytes, dinoflagellates, euglenoids, slime moulds and protozoans. Chrysophytes include: \[ \boxed{\text{Diatoms and Golden algae (Desmids).}} \] These organisms are mostly found in freshwater and are microscopic photosynthetic protists.

Step 1: Understand Chrysophytes.
Chrysophytes are photosynthetic protists that include:

• Diatoms.

• Golden algae (Desmids).
They possess siliceous cell walls and occur abundantly in aquatic habitats.

Step 2: Analyse the given options.

• Dinoflagellates are a separate group of Protista.

• Desmids are golden algae grouped with diatoms.

• Slime moulds are saprophytic protists.

• Euglena belongs to Euglenoids.
Hence, only Desmids satisfy the given condition.

Step 3: Choose the correct option.
Therefore, \[ \boxed{\textbf{Option (B)}} \] is the correct answer.