The answer is:
A. - is dermal tissue, B. - is vascular tissue, C. - is ground tissue
The dermal tissue makes up the outer covering of the plant. It has the hair cuticles and the stomata present on it.
The vascular tissue or the vascular bundles are composed of two different kinds of tubes, the xylem and the phloem. The xylem conducts water from the roots to the shoot and the phloem conducts the food prepared by the leaves to the roots and the stem.
The ground tissue are present beneath the dermal tissue. They contain a lot of water and maintain the turgidity of the plant stem. The purpose of this tissue is to provide structural strength to the plant.
Introns because they are coding sequences.
Exons because they are non-coding sequences.
Answer;
-The first antibody is specific for the primary amino acid sequence of TT, whereas the second is specific for conformational determinants.
Explanation;
-Antigen-antibody reaction, is a specific chemical interaction between antibodies produced by B cells of the white blood cells and antigens during immune reaction.The specificity of the binding is due to specific chemical constitution of each antibody.
-The amino acid sequence in the tips of the "Y" varies greatly among different antibodies. This variable region, composed of 110-130 amino acids, give the antibody its specificity for binding antigen. The variable region includes the ends of the light and heavy chains.