If you are conducting a mono hybrid cross of tall (dominant) and dwarf (recessive) plants, the recessive trait in the f1 plants

The recessive trait is t.

Explanation:

The laws of genetics was formulated by Mendel while workinf on the pea plant Pisum sativum. The law of dominance and law of segregation was obtained by the monohybrid cross.

The cross between TT ( tall) and tt (dwarf) plants, all the offspring obtained from the F1 generation are tall (Tt) . Here, the T trait expresses over the t trait and hides the expression of t trait. The recessive trait cannot express itself in heterozygous condition Here, t trait acts as recessive trait and T acts as dominant trait.

Thus, the answer is t.

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the endomembrane system i think