MCQ
Select the correct match
- AFlatworms - Network of trachea
- BSponges - Book lungs
- ✓Aquatic arthropods - Gills
- DCoelenterates - Lungs
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.


| Column I(Structures) | Column II(Ploidy) |
| (A) Megaspore | (i) 2 n |
| (B) Microspore mother cell | (ii) ( n + n ) |
| (C) Central cell | (iii) n |
| (D) Antipodal cell |
$R$ - Agrobacterium tumifaciens is a pathogens ofseveral dicot plants