Question :
The coralloid root of cycas helps in
Option 1:
absorption of water
Option 2:
absorption of water and fixation of nitrogen
Option 3: anchorage
Option 4: transport of food
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Correct Answer:
Solution : The correct answer is the absorption of water and the fixation of nitrogen.
The coralloid roots of cycads are specialised structures that have a knobby appearance, resembling coral. The cyanobacteria live within specialised cells in the coralloid roots called "cyanobacterial chambers". In turn, the cyanobacteria provide the cycad with fixed nitrogen through a process called nitrogen fixation. Coralloid roots in cycas and other cycads also aid in water absorption.
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In cactus, the spines are modified:
stem
stipules
Option 3: leaves
Option 4: buds
The oilseed which is not edible:
sunflower
cotton seed
Option 3: sesame
Option 4: groundnut
Carolus Linnaeus's System of classification is:
natural
artificial
Option 3: binomial
Option 4: phylogenetic
Sporangia bearing leaf of a fern is called?
Ramentum
Indusium
Option 3: Sorus
Option 4: Sporophyll
Who proposed Binomial Nomenclature?
Carolus Linnaeus
John Ray
Option 3: Aldous Leonard Huxley
Option 4: Aristotle
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