Collateral vascular bundle | Concentric vascular bundle |
Xylem and phloe lie togethher on the same radius. Xylem is on the inner side and phloe is on the outer side. | One type tissue surrounds the other. |
Give reason for the following
Despite availability of plenty of water, leaves of certain plants wilt during the day and recover in the evening.
Give reason for the following
The wing of a bat is said to be homologous to the wing of a bird and analogous to the wing of an insect.
Give reason for the following
Symptoms of deficiency of certain nutrients appear in the old leaves first.