Viroids differ from viruses in that they lack:
A protein coat
Genetic material
Infectivity
The ability to replicate
Related Questions
Which of the following organisms are typically the first to colonize bare rocks in primary succession?
Lichens
Mosses
Grasses
Shrubs
Find out the correct statement
20°C is equal to 68°F
20°C is equal to 70°F
20°C is equal to 60°F
20°C is equal to 72°F
Which of the following are the indicators of pollution?
Lichen
Fungi
Algae
None of these
Which characteristic allows lichens to thrive as pioneer species on bare rock?
Secretion of rock-dissolving acids
Deep root systems
Tolerance to shade
Dependence on organic matter
The algal partner of lichens
Is called mycobiont
Absorbs water and minerals
Forms bulk body of lichens
Performs photosynthesis
Which of the following would appear as the pioneer organisms on bare rocks?
Lichens
Liverworts
Mosses
Green algae
One of the following are very good pollution Indicator
Fungi
Bacteria
Lichens
Gold 8
Pick out the wrong statement
Lichens are symbiotic associations
Lichens are very good pollution indicators
Lichens do not grow in unpolluted areas
The algal component of lichen is known as phycobiont
In a lichen, the fungal partner primarily provides:
Food through photosynthesis
Structure and protection
Nitrogen fixation
Water absorption
The symbiotic relationship in a lichen involves a fungus and which other organism?
Protozoa
Algae or cyanobacteria
Bryophytes
Bacteria
