Algae Classification

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What is the primary mode of reproduction of Euglenophytes under favorable conditions?

Binary fission

Palmella stage

Cyst formation

Longitudinal cell division (correct)

What is the function of stigma in Euglenophytes?

To aid in movement (correct)

To detect light intensity

To sense organic matter

To regulate temperature

Why are Euglenophytes used as indicators of water pollution?

They are aquatic animals

They thrive in polluted waters

They are sensitive to organic matter (correct)

They are resistant to pollutants

What is the term for Euglenophytes that have photosynthetic pigments but can also behave as heterotrophs?

Facultative heterotrophs Signup and view all the answers

What is the purpose of contractile vacuoles in Euglenophytes?

To discharge cellular excretions Signup and view all the answers

Under what conditions do Euglenophytes form palmella stages?

Under unfavorable environmental conditions Signup and view all the answers

What happens to the parental cell during the Palmella stage?

It becomes dormant till conditions become suitable Signup and view all the answers

What is the characteristic feature of Euglena?

It has a green chloroplast and a single flagellum Signup and view all the answers

What is the purpose of cyst formation in these algae?

To form a thick-walled protective structure Signup and view all the answers

How do Euglena cells typically divide?

By longitudinal division Signup and view all the answers

What is the characteristic feature of Phacus?

It is flattened like a leaf with a pointed tail Signup and view all the answers

What happens to the daughter protoplasts in some cases?

They do not escape and are surrounded by a gelatinous sheath Signup and view all the answers

How long can Phacus grow up to?

Up to 100 um Signup and view all the answers

What is the habitat of Phacus?

Similar to Euglena Signup and view all the answers

Who was the first person to use the term 'Algae'?

Linnaeus Signup and view all the answers

Which criterion is used to classify algae based on the morphology and orientation of flagella?

Motile reproduction bodies Signup and view all the answers

What suffix is recommended for the family level in algae classification?

-aceae Signup and view all the answers

Which division of algae is known for lacking a cell wall but has a hard outer layer called a pellicle?

Euglenophyta Signup and view all the answers

What is the difference between paramylon and starch?

Paramylon does not react with iodine Signup and view all the answers

Which of the following is a key feature of Euglenophyta?

Presence of paramylon bodies Signup and view all the answers

What movement is characteristic of Euglenophyta due to their striae?

Metaboly Signup and view all the answers

Which main pigment do Euglenophyta contain?

Chlorophyll a Signup and view all the answers

Algae Classification

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Questions and Answers

What is the primary mode of reproduction of Euglenophytes under favorable conditions?

What is the function of stigma in Euglenophytes?

Why are Euglenophytes used as indicators of water pollution?

What is the term for Euglenophytes that have photosynthetic pigments but can also behave as heterotrophs?

What is the purpose of contractile vacuoles in Euglenophytes?

Under what conditions do Euglenophytes form palmella stages?

What happens to the parental cell during the Palmella stage?

What is the characteristic feature of Euglena?

What is the purpose of cyst formation in these algae?

How do Euglena cells typically divide?

What is the characteristic feature of Phacus?

What happens to the daughter protoplasts in some cases?

How long can Phacus grow up to?

What is the habitat of Phacus?

Who was the first person to use the term 'Algae'?

Which criterion is used to classify algae based on the morphology and orientation of flagella?

What suffix is recommended for the family level in algae classification?

Which division of algae is known for lacking a cell wall but has a hard outer layer called a pellicle?

What is the difference between paramylon and starch?

Which of the following is a key feature of Euglenophyta?

What movement is characteristic of Euglenophyta due to their striae?

Which main pigment do Euglenophyta contain?

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