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

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Male cone of Pinus possesses :

• mega sporophylls

• microsporophylls

• anthers

• ligules

Mosses are attached to substratum by :

• roots

• capsule

• rhizoids

• cistron

A protein rich green alga is :

• Chlorella

• Spirulina

• Spirogyra

• Ulothrix

Rarely among angiosperms the pollen grains influenced the endosperm. This is called as :

• Metaxenia

• Nemec phenomenon

• Xenia

• Mesogamy

A bryophyte which harbours a nitrogen fixing blue-green alga in its thallus is :

• Pogonatum

• Riccia

• Marchantia

• Anthoceros

The circinate vemation is the characteristic feature of ferns. It refers to :

• coiling of young leaves

• arrangement of leaves on stem

• attachment of sori on leaves

• heterophilly

Gymnosperms are called naked seed plants because these lack :

• cotyledon

• endosperm

• ovary wall

• testa

Which of the following plant yields oil and fibre both ?

• Cocos nucifera

• Eucalyptus

• Brassica campestris

• Euphorbia hirta

Hydrophytes are characterised by :

• thick and large leaf

• delicate and mucilagenous stem

• short spinous stem

• all of the above