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प्रश्न
Which one of the following nutrients is not available in fertilizers?
विकल्प
Nitrogen
Phosphorus
Iron
Potassium
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उत्तर
Iron
Explanation:
A chemical fertiliser is a salt or an organic compound containing the necessary plant nutrients. They provide nitrogen, phosphorus and potassium to the plants.
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संबंधित प्रश्न
Enlist the species of honey bee mentioning their specific uses.
Which one of the following is an Italian species of honey bee?
Assertion: Nuptial flight is a unique flight taken the queen bee followed by several drones.
Reason: The queen bee produces a chemical substance called pheromone. The drones in that area are attracted to the pheromone and then mating takes place.
Rearing of honey bee is called ______.
To solve the food problem of the country, which among the following is necessary?
______ and ______ are supplied by air to plants.
An Italian bee variety A. mellifera has been introduced in India for honey production. Write about its merits over other varieties.
Assertion (A): The honey bee queen copulates only once in life.
Reason (R): It can lay both fertilised and unfertilized eggs.
______ is an enzyme present in Honey.
Define the following.
Apiculture
