The disease caused by the Zika virus is transmitted by: MCQ with Answer and Explanation

Explanation:
Somatostatin is a powerful, universal inhibitory peptide hormone. In the gastrointestinal tract and pancreas, it is secreted by the Delta (D) cells of the pancreatic islets and the D cells of the gastric and intestinal mucosa. Its primary role in the GI tract is to act as a paracrine inhibitor, suppressing the release of almost all other gastrointestinal hormones, including gastrin, secretin, cholecystokinin (CCK), vasoactive intestinal peptide (VIP), and gastric inhibitory peptide (GIP). It also inhibits gastric acid secretion, pancreatic enzyme secretion, and intestinal motility, acting as a 'brake' on the digestive system.

Explanation:
Mitochondria are membrane-bound organelles present in almost all eukaryotic cells but absent in prokaryotes, which carry out respiration on the plasma membrane or mesosomes. Ribosomes, cell wall (in most), and plasma membrane are present in both.

Explanation:
Peripatus (velvet worm) is a classic connecting link between the phyla Annelida and Arthropoda. It possesses annelid-like features such as a soft body, segmental arrangement of nephridia, and circular muscles, alongside arthropod-like features such as tracheal respiration, an open circulatory system, and clawed legs. Balanoglossus links Hemichordata and Chordata, and Archaeopteryx links reptiles and birds.