a) IgG b) IgD c) IgM d) IgA Answer: d) IgA Explanation: IgA is found in the body's external secretion, such as milk and colostrum. This... View Article
a) Exposing the plants to cold for a brief period b) Infection of the plant by Agrobacterium tumefaciens c) Allowing the plant roots to stand... View Article
a) Dissolved sugar in water b) Lignification of xylem vessels c) Tensile strength of water d) Positive root pressure Answer: c) Tensile... View Article
a) The number and types of animals remain constant b) The gradual and predictable change in species composition occurs in a given area c) The... View Article
a) AV valves open up b) Ventricular walls vibrate due to gushing in of blood from atria c) AV node receives signal from SA node d) Semilunar... View Article
a) Both alleles independently expressed in the heterozygote. b) Alleles that are recessive to each other c) One allele dominant on the other... View Article
