Perianth modifies into the lodicules in plants which also contain\tSpikelet inflorescence]\tMonocarpellary ovary\tTetramerous flower\tBoth (1) & (2)

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Correct Answer is 4. Both 1 & 2 Spikelet inflorescence & Monocarpellary ovary
Family Poeceae have Spikelet Infrorescence which is the smalest inflorescence unit and have Monocarpellary ovary with single ovule on basal placentation.