- AInterferon
- BAutoantibody
- CAntigen
- DToxins
Explanation:
Myasthenia gravis a chronic autoimmune disease in which weakness of the skeletal muscles of the body occurs. In Myasthenia gravis, antibodies block the receptors for acetylcholine at the synapse, which prevents the muscle contraction
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$I.$ Cytokinins suppress the synthesis of chlorophyll.
$II.$ Auxins control apical dominance.
$III.$ Gibberellins promote shoot elongation.
$IV.$ Abscisic acid enabling seeds to withstand desiccation.
Which of the above statements are correct
Statement $I$:The primary $CO _{2}$ acceptor in $C _{4}$ plants is phosphoenolpyruvate and is found in the mesophyll cells.
Statement $II:$Mesophyll cells of $C _{4}$ plants lack RuBisCo enzyme.
In the light of the above statements, choose the correct answer from the options given below: