Consider the following statements about DNA replication: 1. It is semiconservative. 2. It requires DNA polymerase. 3. It occurs in the cytoplasm of eukaryotic cells. Which of the above is/are correct? MCQ with Answer and Explanation

Explanation:
In roots, the protoxylem (first formed xylem) lies towards the periphery and metaxylem towards the centre; this arrangement is called exarch. In stems, protoxylem is towards the centre, called endarch. Exarch condition is typical of roots. Mesarch is found in ferns. This arrangement aids in understanding anatomical differences between root and stem.

Explanation:
The gall bladder, a small pear-shaped sac under the liver, stores and concentrates bile produced by the liver, releasing it into the duodenum in response to cholecystokinin (CCK). The liver makes bile, pancreas secretes enzymes, duodenum is the entry point.

Explanation:
Vitamin E is a group of tocopherols and tocotrienols, acting as fat-soluble antioxidants. They protect cell membranes from oxidative damage. Deficiency is rare but can cause hemolytic anemia and neurological problems.