Question

The chrysophytes are also known as _______A_______ . Most of the members of this group are _________B_______ . The diatoms have a soap-box like an arrangement of ______C_______ , in which there is deposition of ______D______ .

• A. A-golden algae, B-autotrophs, C-chains, D-iron.
• B. A-dinoflagellates, B-saprotrophs, C-cell wall, D-calcium.
• C. A-dinoflagellates, B-heterotrophs, C-cell membrane, D-phosphorous.
• D. A-golden algae, B-photosynthetic, C-cell wall, D-silica

Answer 1

Answer: (D)

Chrysophytes are aquatic algae, found both in marine and freshwaters. These include golden algae and diatoms. Most of the members of this group are photosynthetic. The diatoms have a soap-box like arrangements of two layers in the cell wall which fit into each other. Their cell walls have deposits of silica which make them extremely rigid. These diatoms have cell wall depositions in their habitats called the diatomaceous earth.