Zoology MCQs for NEET — Practice Questions with Answers

During copulation in female cockroaches, the ovum comes into the genital chamber, which is present in the female cockroach. The genital chamber is a part of the reproductive system where fertilization occurs.

In cockroaches, fertilization occurs in the genital chamber. The male deposits spermatophores into the genital chamber of the female, where fertilization takes place.

Cockroaches are oviparous, meaning they lay eggs. Their development is indirect, involving a series of nymphal stages before reaching adulthood.

The ootheca of a cockroach typically contains 14 to 16 fertilized eggs. The ootheca is a protective casing that ensures the safety and development of the eggs until they hatch.

The nymph grows by moulting about 13 times to reach. In cockroach, the development is indirect and paurometabous adult form and has three stages, i.e., egg, nymph and adult. The nymph resembles adult except for undeveloped wings and genitalia.

Cockroaches primarily excrete uric acid. This method of excretion is known as uricotelism, which is an adaptation to conserve water. Uric acid is less toxic and less soluble in water compared to other nitrogenous wastes like urea and ammonia, making it an efficient waste product for terrestrial animals like cockroaches.

Cockroaches secrete uric acid as their primary nitrogenous waste. This is typical of uricotelic organisms, which include many insects, birds, and reptiles. Uric acid is a less toxic form of nitrogenous waste and requires minimal water for excretion, which is advantageous for survival in terrestrial habitats.

In cockroaches, the anal styles are indeed absent in females. This is a distinguishing feature between male and female cockroaches. Males possess anal styles, which are paired, short, and unsegmented appendages located near the anal cerci, while females do not have these structures.