In Spirogyra sometimes a ladder like structure is present due to
vegetative reproduction
asexual reproduction
lateral conjugation
scalariform conjugation
D.
scalariform conjugation
Sexual reproduction in Spirogyra takes place by conjugation. Scalariform conjugation occurs between the cells belonging to different filaments. Hence, these species are heterothallic. Lateral conjugation is primitive than scalariform conjugation.
Which of the following element plays an important role in nitrogen fixation
Zinc
Molybdenum
Manganese
Copper
'Reindeer moss' is common name for
Funaria hygrometrica
Marchantia sp
Cladonia rangifera
Polytrichum sp
The terminal electron acceptor during electron transport system is
oxygen
cyto a3
cyto c
plasto quinone
Periderm includes
cork cambium only
cork cambium and cork
cork and secondary cortex
cork cambium, cork and secondary cortex
Algal zone is present in
normal root of Cycas
coralloid root of Cycas
normal root of Pinus
stem of Cycas