Question

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

• A. Leaves of adult plant are reduced to phyllodes while those of the seeding are unreduced
• B. The parallel-veined green structures of the adult plant are phylloclades
• C. The plant shows developmental heterophylla compound in seedling and simple in adult plant
• D. The leaves of adult plant are unreduced while they are reduced in the seedling stage

Answer 1

The correct option is A Leaves of adult plant are reduced to phyllodes while those of the seeding are unreduced

In several species, of Australian Acacia Ce.g., A. melanoxylon, A.auriculiformis), the petiole and part of rachis expands to form phyllode. Phyllodes are vertical have fewer stomata and therefore, lose less water in transpiration.