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Which one of the following statement is correct in relation to honey bees?
Karl Von Frisch, carried out many experiments and determined that when a foraging bee returns to the hive,it performs a waggle dance. Honey is predominantly glucose and fructose. Dorsata is a bigger bee than Apis indica (a medium sized bee). Bees wax is secreted by special wax glands to make compartments.
Which of the following plants are used as green manure in crop fields and in sandy soils?
Crotolaria juncea and Alhagi camelorum are among the plants which are used as green manures in India. These green manures help the soil through increasement of area and water holding capacities and fertility.
Bagging is done to
Cellular totipotency is demonstrated by
Cellular totipotency is exhibited only by plant cells where in the plant cells retain the ability to deactivate and form the new dividing cells.
India’s wheat yield revolution in the 1960s was possible primarily due to
The most likely reasonfor the development of resistance against pesticides in insects damaging a crop is
According to Darwin resistance to pesticides has a genetic basis due to presence of certain alleles. In the presence of pesticides, the insects devoid of the allele for resistance die while the ones having them survive.They are selected by nature.
The technique of obtaining large number of plantlets by tissue culture method is called
Blue revolution is related to the following field
Three crops that contribute maximum to global food grain production are
Three crops that contribute maximum to global food grain production are wheat, rice and maize, which belong to the family Poaceae (Graminae).
In order to obtain virus-free plants through tissue culture the best method is
Meristem culture is done for the development of virus free plants. Meristematic tissue cell can betaken either from shoot or root tip.