Study the following statements and select the option with correct statements. I. Pulvinus leaf base is present in some leguminous plants. II. In Eichhornia the petioles expand, becomes green and synthesise food. III. Opposite phyllotaxy is seen in guava.

Step-by-step solution

Most of the leaves have a swollen leaf base known as pulvinus. Its attachment on the stem is not strong. In guava opposite phyllotaxy is found. In this case all the pairs of leaves of a branch arise in same plane, so that two vertical rows are formed. In Australian Acacia, petiole gets modified into leaf like structure and synthesise food. In Eichhornia, petiole becomes spongy and helps in floating.