The process by which plants convert glucose into starch is: MCQ with Answer and Explanation

Explanation:
In a closed circulatory system (e.g., humans, annelids, cephalopods), blood is always enclosed within vessels (arteries, veins, capillaries) and is distinct from interstitial fluid. Open systems (arthropods, most mollusks) have hemolymph bathing organs in sinuses. The lymphatic system returns fluid to blood. A portal system connects two capillary beds.

Explanation:
Invertase (sucrase) hydrolyzes sucrose into its constituent monosaccharides, glucose and fructose. Maltase acts on maltose, lactase on lactose, amylase on starch. Invertase is found in the intestinal brush border and is also produced by yeast. The resulting mixture is called invert sugar, sweeter than sucrose.

Explanation:
The colon (large intestine) primarily absorbs water, sodium, and some vitamins (produced by gut flora) from the indigestible food residue, converting it into semisolid feces. It does not secrete digestive enzymes; that is the small intestine's role. Protein digestion and amino acid absorption occur in the small intestine.