Question

which is the most primitive algae ? (a) rhodophyceae (b) phaeophyta (c) chlorophyta (d) cyanophyta

Answer 1

(d) Cyanophyta
　Among all algae, Cyanophyta (blue-green algae) are the most primitive and the simplest. They have neither cell nucleus nor other organelle. Their chromosomes and pigments are dispersed in the cytoplasm, so they are considered “prokaryote”.

Answer 2

Answer:

(c) Chlorophyta  is the most primitive algae.

Explanation:

• To store food, chlorophytes contain pyrenoid bodies. Chlorophytes are the most sophisticated category of algae, based on this evolution.
• Rhodophyceae are known as red algae because of the crimson pigment r-phycoerythrin that predominates in their bodies. The majority of red algae have multicellular red thalli. The food is kept in the form of floridean starch.
• Brown algae, also known as phaeophyceae, are mostly found in marine environments.
• Blue-green algae, commonly known as Cyanobacteria, are a form of photosynthetic bacteria that can be found as single cells or colonies.