Endosperm is consumed by developing embryo in the seed of 

• coconut

• castor

• pea

• pea

Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

• Bacterial leaf blight of rice

• Downy mildew of grapes

• Loose smut of wheat

• Loose smut of wheat

Replum is present in the ovary of flower of 

• lemon

• Mustard

• Sunflower

• Sunflower

Thorn of Bougainvillea and tendril of Cucurbita are examples of 

• analogous organs

• homologous organs

• vestigial organs

• vestigial organs

45.

In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statement is true about archaea? 

• Archaea resemble eukarya in all respects

• Archaea have some novel features that are absent in other prokaryotes and eukaryotes

• Archaea completely differ from both prokaryotes and eukaryotes

• Archaea completely differ from both prokaryotes and eukaryotes

Thermococcus, Methanococcus and Methanobacterium emplify

• archaebacteria that contain protein homologous to eukaryotic core histones

• archaebacteria that lack any histones resembling those found in eukaryotes but DNA is negatively supercoiled

• bacteria whose DNA is relaxed or positively supercoiled but which have cytoskeleton as well as mitochondria

• bacteria whose DNA is relaxed or positively supercoiled but which have cytoskeleton as well as mitochondria

Which of the following is a slime mould?

• Rhizopus

• Physarum

• Thiobacillus

• Thiobacillus

Ergot of rye is caused by a species of

• Phytophthora

• Uncinula

• Ustilago

• Ustilago

A genetically engineered micro-organism use successfully in bioremediation of oil spills is a species of

• Pseudomonas

• Trichoderma

• Xanthomonas

• Xanthomonas

Which pair of the following belongs to Basidiomycetes?

• Birds nest fungi and Pufballs

• Pufballs and Calviceps

• Peziza and Stink horns

• Peziza and Stink horns