Question

This about Periplaneta Americana is incorrect
A. Mosaic vision
B. Excretion by structures-malphigian tubules
C. Paurometabolous development
D. Hemolymph delivers oxygen to tissues

Answer 1

Hint:
Malpighian tubules are thin tubes that are often located in the back of an arthropod's alimentary canal. The proximal end of each tubule, which is closed up at the distal end and joins the alimentary canal at the intersection of the midgut and hindgut, is made up of a single layer of cells. These tubules work similarly to the human kidney and were developed using similar concepts.
The cockroach's excretory system, known as the malpighian tubules, is responsible for disposing of leftover metabolites and nitrogenous wastes. Osmosis causes water to flow passively, pulling tiny hemolymph solutes with it. The more proximal Malpighian tubules and the hindgut it passes through, the more this primary urine is altered.

Complete answer:
Hemolymph functions as a reservoir for water that tissues can draw from during desication as well as a place to store various compounds. Hemocytes, which are circulating cells, are also present. Hormones and waste materials are also transported by insect hemolymph. Hemolymph, in contrast to blood, lacks oxygen-carrying respiratory substances like haemoglobin.
Two copper atoms are present in these metalloproteins, and they reversibly bind one oxygen molecule. Haemolymph does not have haemoglobin as blood does, hence it cannot carry oxygen. Haemocytes, a type of cell, are present. This type of circulatory fluid is also seen in molluscs. In an insect's tracheal system, oxygen and carbon dioxide are exchanged.
So, Hemolymph delivers oxygen to tissues is the incorrect statement about Periplaneta Americana.

Option ‘D’ is correct

Note:
Paurometabolous describes a nymphal stage-based slow transformation. The embryo does not go through a larval stage before becoming an adult. The nymphs resemble adults very substantially, and it takes a nymph thirteen molts to become an adult. Most cockroaches are oviparous, meaning their offspring develop in eggs that are placed outside of the mother's body. In this species, the mother roach carries her eggs in an ootheca, a pouch that is linked to her abdomen, while she is moving around.
Because its hard exoskeleton, also known as its outer covering, doesn't grow, cockroaches must periodically produce a new exoskeleton on top of the old. This process is known as molting