Leon listed the steps involved when auxin affects plant growth in response to light. The steps are listed in random order.

1 - Auxin builds up in the stem.
2 - The stem bends toward light.
3 - Auxin moves to the shaded side of plant.
4 - Cells on the shaded side grow more quickly.

Which shows the correct order of steps involved when auxin affects plant growth?

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answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.