what are primary and secondary organs? Give the names ?

Your question is not clear, either you should ask primary or secondary sex organs or else primary or secondary lymphoid organs.
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Primary sex organ is an organ that is directly involved in the process of reproduction. E.g - testes in males and the ovaries in females.
The other organs that are indirectly involved in reproduction are called secondary sex organs. For example, uterus, vas deferens etc.