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प्रश्न
A free-living nitrogen-fixing cyanobacterium which can also form a symbiotic association with the water fern Azolla
पर्याय
Nostoc
Anabaena
chlorella
Rhizobium
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उत्तर
Anabaena
संबंधित प्रश्न
Read the given statements and select the correct option.
- Hydrophytes possess aerenchyma to support themselves in water.
- Seeds of Viscum are positively photoblastic as they germinate only in presence of light.
- Hygroscopic water is the only soil water available to roots of plants growing in soil as it is present inside the micropores.
- High temperature reduces use of water and solute absorption by roots.
Read the given statements and select the correct option.
Statement A: Cattle do not graze on weeds of Calotropis.
Statement B: Calotropis have thorns and spines, as a defense against herbivores.
In soil water available for plants is
The plant of this group are adapted to live partly in water and partly above substratum and free from water
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Soil formation can be initiated by biological organisms. Explain how?
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What is a seed ball?
What is co-evolution?
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Explain different types of hydrophytes with examples.
Describe the dispersal of fruit and seeds by animals.
