91.

Name the enzyme produced by Streptococcus bacterium. Explain its importance in medical sciences. 

Give a scientific term:
The development of an embryo without the occurence of fertilization.

Differentiate between Parthenocarpy and Parthenogenesis. Give one example of each.

Monoecious plant of Chara shows occurrence of 

• antheridiophore and archengoniophore on the same point

• stamen and carpel on the same plant

• upper antheridium and lower oogonium on the same plant

• upper antheridium and lower oogonium on the same plant

Which of the following pairs is not correctly matched?

• Mode of reproduction                               Example
  Offset                                                        Water hyacinth
  
  
• Mode of reproduction                               Example
  Rhizome                                                     Banana
• Mode of reproduction                                       Example 
  Binary fission                                                      Sargassum 
• Mode of reproduction                                       Example 
  Binary fission                                                      Sargassum 

In vitro clonal propagation in plants is characterised by

• PCR and RAPD

• Northern blotting

• Electrophoresis and HPLC

• Electrophoresis and HPLC

Male gametes are flagellated in

• Polysiphonia

• Anabaena

• Ectocarpus

• Ectocarpus

In ginger vegetative propagation occurs through 

• rhizome

• offsets

• bulbils

• bulbils

Which is the most common mechanism of genetic variation in the population of sexually reproducing organism?

• Transduction

• Chromosomal aberrations

• Genetic drift

• Genetic drift

Which one of the following matches is correct?

• Phytophthora

  Aseptate mycelium

  Basidiomycetes

• Alternaria

  Sexual reproduction

  Deuteromycetes

• Mucor

  Reproduction by conjugation

  Asocmycetes

• Mucor

  Reproduction by conjugation

  Asocmycetes