If a portion of the pancreas is surgically removed from a rat and the rat subsequently loses its appetite, one explanation is that the removed portion contains cells that secrete a chemical signal that somehow stimulates appetite. Given this scenario, what type of chemical signaling is occurring?

TLS Online TPP Program

#Question id: 38784

#Plant Biotechnology

Q. Statement I: Meristem culture was first applied to produce virus-free Dahlia plants.

 Statement II: This application was reported by Morel and Martin in 1952.

TLS Online TPP Program

#Question id: 38785

#Plant Biotechnology

Q.Statement I: Very small apical meristems are used for virus elimination in meristem culture.

 Statement II: The initial size of apical meristems used is approximately 100 µm. 

TLS Online TPP Program

#Question id: 38786

#Plant Biotechnology

Q. Statement I: Meristem culture is used to eliminate only viral pathogens from plants.

 Statement II: Plants regenerated through meristem culture are free from viruses, viroids, mycoplasma, fungi, and bacteria.

TLS Online TPP Program

#Question id: 38787

#Plant Biotechnology

Q. Statement I: Meristem culture has been successfully used in potato and sugarcane.

 Statement II: These crops are mainly propagated through clonal methods.

TLS Online TPP Program

#Question id: 38788

#Plant Biotechnology

Q. Statement I: The effectiveness of meristem culture depends on viral distribution in plant tissues.

 Statement II: Apical meristems usually contain low or no virus titre.

TLS Online TPP Program

#Question id: 38789

#Plant Biotechnology

Q.Statement I: Meristem culture is important for the conservation of plant genetic resources.

 Statement II: It helps in maintaining healthy breeding material and facilitates safe germplasm exchange.