BBC Sport, Warri
Bayor has led the Black Queens to a good showing the tournament.
Ghana topped Group B at the African Women's Championship after beating DR Congo 3-1 in Ughelli on Saturday.
Cameroon picked up the group's other semi-final ticket with a 2-0 win over Mali.
The Black Queens, who finished with maximum nine points, will face Group A runners-up South Africa in the semi-final on Tuesday.
The Indomitable Lioness will face hosts Nigeria in Tuesday's other game after finishing second with four points.
Ghana shot ahead through youngster Anita Amankwa in the 22nd minute following a commanding performance in the first twenty minutes of the game.
Amankwa added her second ten minutes later to send fans into frenzy.
The Congolese put up a spirited challenge at the start of the second-half and pulled one back through Nzuzi Vumongo with took advantage of a defensive mix-up in 51st minute.
But Florence Okoe sealed the Black Queens' victory as she connected a cross from captain Adjoa Bayor with only six minutes remaining.
Meanwhile, Manuela Bekombo set Cameroon on their way victory with a strike just before break in Warri.
Bekombo finished off a brilliant run from Cathy Bou Ndjouth as she put the ball beyond the reach of Mali goalkeeper Djeneba Bamba.
Marlyse Ngo added the Indomitable Lioness' second from a free-kick in the 74th minute.
The Malians took full control of the game in the last quarter but striker Coulibaly Yacare wasted several gilt-edged opportunities, the most glaring coming when she fired over from eight yards out with only the keeper to beat.