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1. Give an account on vascular bundle of dicot stem.
 
a. A type of bundle, the xylem and phloem are bundled together and lie on the same radius are called .
 
b. A type of bundles, the xylem is in the centre, and the phloem is on the periphery are called .
 
c. Protoxylem lies towards the centre, and the metaxylem lies towards the periphery. This condition is called .
 
d. The presence of cambium, the vascular bundles of dicot stems, are .
 
2. Write a short note on mesophyll.
 
a. The mesophyll is the tissue found in the .
b. The internal ground tissue of the leaf, lying between the .
 
c. The  that make up the mesophyll tissues are irregularly arranged with intercellular spaces.
 
d. Mesophyll tissue contain   and can participate in photosynthesis.