Plant Kingdom

In gametophyte of fern

• prothallus is independent from sporophyte

• prothallus is attached with sporophyte

• it is main plant body

• a structure attached with rhizome

'Gymnosperm' have how many species?

• 1000

• 900

• 640

• 300

People recovering from long illness are often advised to include the alga Spirulina in their diet because it

• makes the food easy to digest

• is rich in proteins

• has antibiotic properties

• restores the intestinal microtlora

Algae are useful because they

• are large in number

• are used in alcoholic fermentation

• purify the atmosphere

• are used in curdling of milk.

Turpentine oil is obtained from

• Pinus

• Cycas

• Cedrus

• Delbergia

The lack of fruit formation in gymnosperm is due to

• absence of fertilization

• lack of seeds

• naked ovule

• sheding of immature seed

The plant body of moss (Funaria) is

• completely sporophyte

• predominantly sporophyte with gametophyte

• completely gametophyte

• predominantly gametophyte with sporophyte

Azolla is used as a biofertilizer because it

• multiplies very fast to produce massive biomass

• has association of nitrogen - fixing Rhizobium

• has association of nitrogen - fixing cyanobacteria

• has association of mycorrhiza

Pneumatophores (respiratory roots) are found in

• Pistia

• Calobranchia

• Rhizophora

• All of these

'Club moss' is the common name of

• Selaginella

• Funaria

• Potamogeton

• Lycopodium