Which of the following is not an embryophyte?

The free-living,nitrogen-fixing cyanobacterium which also forms a symbiotic association with the water fern $Azolla$ is.......

Which types of pigments are found in algae?

In $Ulothrix$ / $Spirogyra$,the reduction division (meiosis) occurs at the time of:

In which of the following algal classes are starch and oil present as food storage materials?

Which of the following is an example of a colonial alga?