In Bougainvillea, thorns are the modification of:
1. Stipules
2. Adventitious root
3. Stem
4. Leaf

Whorled, simple leaves with reticulate venation are present in

Phyllode is present in :
1. Asparagus
2. Euphorbia
3. Australian Acacia
4. Opuntia

Leaves become modified into spines in
1. Cactus
2. Rose
3. Citrus
4. Pistia

Leaves become modified into spines in
1. Pea
2. Onion
3. Silk Cotton
4. Opuntia

Which of the following is not a stem modification?
1. Flattened structures of Opuntia
2. Pitcher of Nepenthes
3. Thorns of citrus
4. Tendrils of cucumber

Catkin inflorescence is found in
1. Wheat
2. Oat
3. Mulberry
4. Fig

A racemose type of inflorescence with its main axis almost flat is called
1. Corymb
2. Umbel
3. Spike
4. Capitulum

Spathe is present in the flowers of
1. Banana
2. Rice
3. Marigold
4. Sunflower

Cymose inflorescence is present in: