Question

Identify the structures present on the leaf.
11
1) Sporangia 2) Sporangiophore 3) Spores 41 Sporophy
35. Which muscles contraction will result in narrowing of the oesophagus just behind the bolus
1) Longitudinal muscles
2) Circular muscles
3) Diagonal muscles
4) All the above​

Answer 1

Answer:

• sporangia
• circular muscles

Explanation:

• sporangia are spore bearing structure present on the ventral surface of leaves of gymnosperms.
• circular muscle cause the peristaltic movements in oesophagus.