In Bougainvillea thorns are the modifications of:
1. Adventitious root
2. Stem
3. Leaf
4. Stipules
Root hairs develop from the region of:
1. Elongation
2. Root cap
3. Meristematic activity
4. Maturation
Plants which produce characteristic pneumatophores and show vivipary belong to:
1. Halophytes
2. Psammophytes
3. Hydrophytes
4. Mesophytes
The wheat grain has an embryo with one large, shield-shaped cotyledon known as?
1. epiblast
2. coleorrhiza
3. scutellum
4. coleoptile