71.

The protein rich alga is

•  Ulothrix

•  Spirogyra

•  Nostoc

•  Chlorella

The amphibians of plant kingdom are

• algae 

• bryophytes

• thallophytes 

• floating plants

The plant Cuscuta shows maximum photosynthesis in

• red light

• blue light

• green light

• no photosynthesis at all

Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characteristic features of

• polypetalous angiosperms

• gamopetalous angiosperms

• conifers

• cycads

Which one of the following pairs is mismatched?

• Savanna - Acacia trees

• Prairie - Epiphytes

• Tundra - Permafrost

• Coniferous forest - Evergreen trees

Tea and coffee are affected by

• Phytophthora

• Cephaleuros

• Herviella

• Albugo candida

Though Cycas has 2 cotyledons, this is not included in dicot because

• naked ovule

• they have megaspore

• appears as palm tree

• has compound leaves

The modified stem of Opuntia is

• phyllode

• phylloclade

• cladode

• stamroinode

Mannitol is reserve food in

• Rhodophyceae

• Chlorophyceae

• Phaeophyceae

• Xanthophyceae

Plants growing on sand and gravel are called

• eremophytes

• psammophytes

• psilophytes

• oxylophytes