Question

Read the following statements
(1) Presence of flagella
(ii) Soap box like cell wall
(iii) Presence of pellicle
(iv) Formation of kieselghur
How many statements are true about chrysophytes?
(1) Three
(2) Two
(3) One
(4) Four​

Answer 1

Answer:

(1) Three

Explanation:

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Answer 2

Answer:

Option (1) Three

Explanation:

• Chrysophytes are included under Kingdom Protista. This group includes diatoms and desmids or golden algae. They are microscopic and found in fresh as well as in marine environments.

• They are photosynthetic and often flagellate or with flagellate stages.

Hence statement (i) is correct.

• In diatoms, the cell walls form two thin overlapping shells, which fit together just like a soapbox.

Hence statement (ii) is correct.

• The cell walls in Chrysophytes are embedded with silica and thus are indestructible. This is why they left behind a large amount of cell wall deposits in their habitat. And this natural accumulation over billion years is described as Diatomaceous earth or kieselguhr.

Hence statement (iv) is also correct.

• A pellicle is a protein-rich layer found in Euglenoids in place of the cell wall which helps in their body flexibility.

Hence (iii) is the incorrect statement.

Hence out of the 4 given statements about Chrysophytes, only three are correct.