PETIOLE

In Acacia species, the first few leaves are pinnately compound. Then there are leaves with flattened petiole and fewer pinnae. The leave of adult plant has parallel veined flattened petiole and no pinnae. It shows that

Assertion : A bud is present in the axial of petiole of both simple and compound leaves but not in the axil of leaflets of the compound leaf Reason : The stem bears buds. Which may be terminal or axillary. The axillary bud later develops into a branch.

In the given statements I - IV I) Pea plant is a tendril climber with stipules and lower leaflets carrying on carbon assimilation II) Bryophyllum is a leaf succulent with adventitious buds that participate in vegetative propagation III) Australian acacia is a xerophyte with entire petiole modified into phyllode IV) Pitcher plant is a partial heterotroph, with lower part of petiole modified as phyllode Correct answer is

Study the following statements and select the correct option (A) Buds are present in the axil of leaflets of the compound leaf (B) Pulvinus leaf-base is present in some leguminous plants (C) In Alstonia,the petioles expand,become green and synthesize food (D) Opposite phyllotaxy is seen in guava.

Identify the wrong statements from the following : (i) Branches of limited growth in Aspargus perform photosynthesis (ii) Petiole of Australian Acacia helps in climbing (iii) Floral buds of Agave store food materials (iv) Aerial roots of Taeniophyllum helf in vegetative propagation