An open collateral bundle is one in which :

• xylem and phloem are seprated by cambium;

• xylem and phloem lie side by side

• cambium occurs on the out side of bundle

• cambium does not occur in the bundle

Terminal cytochrome of respiratory chain which donates electrons to oxygen is :

• cytochrome b

• cytochrome c

• cytochrome a

• cytochrome a₃

Dendrochronology is the study of:

• height of a tree

• diameter of a tree

• age of the tree by counting the number of annual rings in the main stem

• none of the above

Pratonema is found in the life cycle of:

• Spirogyra

• Rhizopus

• Escherichia

• Funaria

Energy currency (reservoir) of the cells is:

• AMP

• ATP

• RNA

• DNA

Agar-agar commonly used in bacterial cultures and medication is obtained from :

• Sargassum 

• Gelidium

• Ulothrix

• Ulva

Dikaryon formation is characteristic of :

• ascomycetes and basidiomycetes

• phycotnycetes and basidiomycetes

• ascomycetes and phycomycetes

• phycomycetes and zygomycetes

Most effective wavelength of light photosynthesis is :

• green

• violet

• red

• yellow

Divisions characteristic of korper-kappe theory are:

• anticlinal

• T-type

• periclinal

• irregular

Prothallus of fem has :

• antheridia and archegonia on lower surface

• antheridia and archegonia on upper surface

• antheridia on upper surface and archegonia on lower

• antheridia on lower surface and archegonia on upper surface