The odd ones out in each group would be leaf, mango, Hydrilla, and oak respectively.
Finding odds
Leaf is the odd one out because corolla, gynoecium, and androecium all represent parts of a flower.
Mango is the odd one out because wheat, rice, and maize are all grains.
Hydrilla is the odd one out because it is the only plant in the group that is aquatic.
Oak is the odd one out because it is the only tree species in the group. Others are shrubs.
More on finding odds can be found here: https://brainly.com/question/22401993
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