Which of the following group of kingdom protista is being described in the statements given below?
(i) This group includes diatoms and golden algae.
(ii) They are microscopic and float passively in water currents (plankton).
(iii) Most of them are plotosynthetic.
(iv) They have deposits in their habitat; this accumulation over billion of years is referred to as diatomaceous earth.
Text Solution
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The statements provided describe the group Chrysophytes within the Kingdom Protista:
Includes Diatoms and Golden Algae: Chrysophytes primarily consist of diatoms and golden algae (also known as desmids).
Microscopic Plankton: These organisms are microscopic and lack flagella in their vegetative state, causing them to float passively in both freshwater and marine water currents as plankton.
Photosynthetic: Most members of this group are autotrophic and serve as the "chief producers" in the oceans.
Diatomaceous Earth: Diatoms have unique cell walls embedded with silica that form two overlapping shells (like a soap box). These walls are indestructible and accumulate over billions of years on the ocean floor, forming deposits known as diatomaceous earth.
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