Phylogenetic system of classification is based on 

• evolutionary relationships

• morphological features

• chemical constituents

• chemical constituents

Trichoderma harzianum has proved a useful microorganism for 

• bioremediation of contaminated soils

• reclamation of wastelands

• gene transfer in higher plants

• gene transfer in higher plants

Select the correct combination of the statement (A-D) regarding the characteristics of certain organisms.

A. Methanogens are Archaebacteria, which produce methane in marshy areas.
B. Nostoc is a filamentous blue-green algae, which fixes atmospheric nitrogen.
C. Chemosynthetic autotrophic bacteria synthesise cellulose from glucose.
D. Mycoplasma lacks a cell wall and can survive without oxygen.

• B, C

• A, B,C

• B, C, D

• B, C, D

An example of endomycorrhiza is 

• Nostoc

• Glomus

• Agaricus

• Agaricus

T O Diener discovered a

• free infectious RNA

• free infectious DNA,

• infectious protein

• infectious protein

Which one of the following has haplontic life cycle?

• Funaria

• Polytrichum

• fully developed foetus and placenta

• fully developed foetus and placenta

Which one of the following is wrongly matched?

• Puccinia - Smut

• Root - Exarch protoxylem

• Cassia - Imbricate aestivation

• Cassia - Imbricate aestivation

Peripatus is a connecting link between

• Ctenophora and Platyhelminthes

• Mollusca and Echinodermata

• Annelida and Arthropoda

• Annelida and Arthropoda

Virus envelope is known is 

• capsid

• virion

• nucleoprotein

• nucleoprotein

Palisade parenchyma is absent in leaves of 

• sorghum

• mustard

• soybean

• soybean