This plant is used as a packing material and also forms an excellent fodder for feeding cattle.

(1) Medicago

(2) Pongamia

(3) Cratolaria

(4) All of these

Maximum protein is present in (which is used as food in space)

(1) Chlorella

(2) Scendesmus

(3) Porphyra

(4) Spirulina

Roots of higher plants show symbiosis with mycorrhiizas for obtaining

(1) sulphates

(2) nitrogen

(3) phosphates

(4) All of these

The world's tallest (angiosperm) flowering tree is

(1) Sequoia

(2) Eucalyptus

(3) Pinus

(4) Cedrus

The wood of Pinus is

(1) manoxylic

(2) polyxylic

(3) pycnoxylic

(4) manoxylic and pycnoxylic

Porous wood has abundance of

(1) vessels

(2) fibres only

(3) tracheids

(4) sieve tubes

Algae are useful because they

(1) are large in number

(2) are used in alcoholic fermentation

(3) purify the atmosphere

(4) are used in curdling of milk

The plant body of moss (funaria) is

(1) completely sporophyte

(2) predominatly sporophyte with gametophyte

(3) completely gametophyte

(4) predominantly gametophyte with sporophyte

Megasporophyll of Cycas has the same nature as

(1) stamen

(2) petal

(3) sepal

(4) carpel

The plant part which consists of two generations, one within the other, is

(a) germinated pollen grain

(b) embryo

(c) unfertilized ovule

(d) seed