Quiz_Algae

Explanation:Ectocarpus exhibits isomorphic alternation of generations, where the haploid and diploid stages are morphologically similar, making it difficult to distinguish between them.

Explanation:Agar-agar is extracted from red algae, particularly Gelidium species. It is widely used as a gelling agent in microbiological culture media and various food products.

Explanation:The zygospores of Ulothrix are typically non-flagellate, meaning they do not possess flagella for movement. These spores are formed through the fusion of gametes and are involved in sexual reproduction.

Explanation:Cyanobacteria, also known as Myxophyceae or blue-green algae, are photosynthetic prokaryotes that play a crucial role in nitrogen fixation and primary production in aquatic ecosystems.

Explanation:Batrachospermum exhibits a haplo-diplo-haplontic triphasic life cycle, involving alternating haploid and diploid stages with distinct morphological forms.

Explanation:Myxophyceae, also known as cyanobacteria or blue-green algae, possess a primitive or incipient nucleus, lacking a true nuclear membrane.

Explanation:Blue-green algae (cyanobacteria) and certain bacteria possess the ability to fix atmospheric nitrogen through specialized structures called heterocysts, contributing to the nitrogen cycle in ecosystems.

Explanation:Spirogyra is commonly referred to as ‘Pond silk’ or ‘Water silk’ due to its filamentous and slimy nature, which resembles silk threads floating in water.

Explanation:Spirogyra predominantly inhabits freshwater environments such as ponds, ditches, and slow-moving streams, where it forms floating mats.

Explanation:A thallus is a simple, undifferentiated plant body found in algae, fungi, and some non-vascular plants. It lacks true roots, stems, and leaves.