Biological Classification 🦠
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2.2.1 Chrysophytes
This group includes diatoms and golden algae (desmids).
Where are Chrysophytes found?
They are found in fresh water as well as in marine environments.
What is the typical size of Chrysophytes?
Most of them are microscopic.
How do Chrysophytes move and obtain energy?
They float passively in water currents (plankton) and are photosynthetic.
🟫 Flashcard 7
Q: What are the industrial uses of diatomaceous earth?
A: Used in polishing, filtration of oils and syrups, and as a cleaning agent in toothpaste
🟪 Flashcard 6
Q: What is 'diatomaceous earth'?
A: Accumulated silica cell wall deposits from dead diatoms over billions of years
Flashcard 1
Q: What organisms are included in Chrysophytes?
A: Diatoms and golden algae (desmid
s)
🟨 Flashcard 2
Q: What is the habitat of Chrysophytes?
A: Found in both freshwater and marine environmen
ts
🟩 Flashcard 3
Q: What is the mode of nutrition in most Chrysophytes?
A: Photosynthetic
🟧 Flashcard 4
Q: What is the ecological role of diatoms in oceans?
A: Chief producers — they form the base of the aquatic food chain
🟥 Flashcard 5
Q: What makes diatom cell walls unique?
A: Embedded with silica, making them indestructible
🟪 Flashcard 6
Q: What is 'diatomaceous earth'?
A: Accumulated silica cell wall deposits from dead diatoms over billions of years
Note 
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