Question

blue green algae are present in root of
a-pinus
b-cycas
c-ephedra
d-marsilea​

Answer 1

it is in the form of the small to medium sized pine and it is highly found to eastern North America from central Maine south to Georgia. The coralloid roots of Cycas is infected some bacteria, fungi and blue green algae

so ,

b- Cycas

Answer 2

The right choice is option b cycas.  

The blue green algae are present in root of – cycas.  

These plants can be grown in warm temperate and subtropical regions in outdoors thy can also e grown under glass in colder regions.

They grow well int in sandy, well-drained soil, that has some organic matter an they need good drainage or they will rot