Biological Classification

Question 1

Citrus canker and tetanus is caused by

Answer 1

bacteria

Question 2

_______________ forms of amoeboid parasites have silica shells on their surface

Answer 2

Marine

Question 3

Spores of phycomycetes

Answer 3

zoospores, aplanospores (endogenously)

Question 4

Asexual spores of ascomycetes

Answer 4

conidia on conidiosphores

Question 5

_______________ recognised certain microbes as causal organism of the mosaic disease of
tobacco. These were found to be smaller than bacteria
because they passed through bacteria-proof filters

Answer 5

Dmitri Ivanowsky (1892)

Question 6

___________ demonstrated that the extract of the infected plants of tobacco could cause infection in healthy plants and named the new pathogen “virus” and called the fluid as Contagium vivum fluidum

Answer 6

M.W. Beijerinek (1898)

Question 7

___________) showed that viruses could be crystallised

and crystals consist largely of proteins.

Answer 7

W.M. Stanley (1935)

Question 8

Who discovered viroids in which year

Answer 8

T. O Diener 1971

Question 9

What is Antedon

Answer 9

Sea lily

Question 10

What is Labeo and Clarius

Answer 10

Rohu and Magur resp