Non flowering plants are included under

(1) cryptogamae

(2) phanerogamae

(3) angiosperms

(4) Both a and b

Chlorophyll present in red algae is

Shape of chloroplast present in Ulothrix is

(1) cup shaped

(2) girdle shaped

(3) star shaped

(4) diffused type

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

The green alga rich in proteins used as food supplements even by space travelers is

(1) Chlorella

(2) Scendesmus

(3) Porphyra

(4) Carrageen 

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