1. Single helix
2. Double helix
3. Multi helix
4. None of these
None of these
1. Callose
2. Pectocellulose
3. Cellulose
4. Fat-like sporopollenin
Pectocellulose
1. Secretory or glandular type
2. Amoeboid or invasive type
3. Non-glandular and non-invasive type
4. Resupinate type
Amoeboid or invasive type
1. Homopolysaccharide
2. Heteropolysaccharide
3. Protein
4. Fatty substance
Fatty substance
1. Tapetal cell
2. Endothecial cells
3. Pollen mother cells
4. Stomium cells
Pollen mother cells
1. Foot layer
2. Tectum
3. Tectun and baculate layer
4. Foot layer and baculate layer
Tectun and baculate layer
1. Produce ubisch bodies
2. Produce pollen grains
3. Store and protect pollen grains
4. All of the above
Produce pollen grains
1. Uracil
2. Ribose sugar
3. Thymidine
4. Adenine
Thymidine
1. Monocolpate
2. Bicolpate
3. Tricolpate
4. Multicolpate
Monocolpate
1. Double fertilization
2. somatogamy
3. Triple fusion
4. Central fertilization
Triple fusion