1. Tardigrade
  2. Question
  3. Biology
  4. Select the correct combinations or statements about characteristics of certain organisms. (a) Methanogens are archaebacteria that produce methane in marshy areas. (b) Nostoc is a filamentous green alga that fixes atmospheric nitrogen. (c) Chemosynthetic autotrophic bacteria synthesize cellulose from glucose. (d) Mycoplasma lacks a cell wall and is pathogenic to plants as well as animals.

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Q. Select the correct combinations or statements about characteristics of certain organisms.
$\left(a\right)$ Methanogens are archaebacteria that produce methane in marshy areas.
$\left(b\right)$ Nostoc is a filamentous green alga that fixes atmospheric nitrogen.
$\left(c\right)$ Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
$\left(d\right)$ Mycoplasma lacks a cell wall and is pathogenic to plants as well as animals.

NTA AbhyasNTA Abhyas 2022

Solution:

Archaebacteria belong to Kingdom Monera, includes methanogens, halophiles, and thermoacidophils. Nostoc is a cyanobacterium (Blue-green algae) which fixes atmospheric nitrogen. Mycoplasma lacks a cell wall and are known to infect both plants and animals. Chemosynthetic autotrophs oxidize inorganic substances to produce energy and help the cycling of minerals.