Problem 86 - Objective Biology for NEET

Question

How many oothecae is produced by female cockroach? (a) 9 to 10 (b) 14 to 16 (c) 13 (d) 1 to 2

Step-by-Step Solution

Answer

The correct answer is (a) 9 to 10 oothecae.

Step 1: Understand the Question

The question asks for the number of oothecae, which are the egg capsules, a female cockroach produces. A detailed knowledge about the reproduction of cockroaches is necessary here. There are multiple choices given - so one of them should be the correct answer.

Step 2: Find and Confirm the Correct Information

By looking up in a reputable source of information, such as a biology textbook or a scientific publication, it can be found that a female cockroach typically produces between 9 to 10 oothecae in her lifetime, and each ootheca contains numerous eggs.

Step 3: Choose the Correct Answer

Given the information found and confirmed in Step 2, the correct answer will be (a) 9 to 10. Other options do not match with the found information.

Key Concepts

Ootheca

The term "ootheca" refers to the protective capsule that encases the eggs of certain insects, including cockroaches. These egg capsules are crucial as they protect developing embryos from various environmental hazards. Female cockroaches produce oothecae during their reproductive cycle, and the number and size can vary based on the species and environmental factors.

In cockroaches, the ootheca is typically a hard, shell-like structure that provides security until the eggs are ready to hatch. Inside the ootheca, a multitude of eggs are securely packed, each waiting to eventually develop into a nymph. The durability of the ootheca ensures the safety of the eggs from predators and harsh environmental conditions.

• Protection: Oothecae shield eggs from damage.
• Species Variance: Different species may produce oothecae of varying numbers and sizes.
• Shelter: Provides a mini-environment for embryonic development.

Insect Lifespan

The lifespan of insects, including cockroaches, is an essential facet of their biology. It provides insight into their reproduction cycles and overall survival. Cockroach lifespans can vary widely among different species, but they generally follow a lifecycle of egg, nymph, and adult.

The lifespan of a female cockroach is particularly vital for understanding how many oothecae she might produce. Depending on the species, a cockroach can live anywhere from a few months to over a year. During this time, a female can repeatedly create and release oothecae containing multiple eggs.

• Lifespan Stages: Eggs, nymphs, and adults are main stages.
• Reproductive Phase: Understanding lifespan helps in predicting reproductive output.
• Environmental Impact: Conditions like temperature and food availability can affect lifespan.

Egg Capsules

Egg capsules are an integral part of the cockroach reproduction process. These capsules, or oothecae, carry the promise of future generations by housing a number of eggs. An ootheca can hold between 16 to 50 eggs, depending on the cockroach species.

The female cockroach carefully deposits these egg capsules in safe, hidden environments to improve the likelihood of survival. Following the maturation period, the eggs within the ootheca hatch into nymphs, marking the beginning of the next lifecycle phase.

• Egg Quantity: Varies by species, with certain oothecae housing dozens of eggs.
• Exposure: Placement in concealed and protected areas is vital.
• Cycle Continuation: Hatching of nymphs continues the cycle of life.

Biology of Cockroaches

The biology of cockroaches encompasses their structure, lifecycle, and reproductive habits. These resilient creatures have been around for millions of years and have evolved to survive in a wide range of environments.

Cockroaches exhibit a simple yet effective body plan that supports their survival. The key components of their biology include a durable exoskeleton, highly sensitive antennae, and robust hind legs that facilitate rapid movement. A deep understanding of their biology is critical to comprehending how they reproduce and propagate their species.

• Physical Features: Include exoskeleton, antennae, and legs critical for survival.
• Reproduction: Efficient systems help sustain population.
• Adaptability: Thrive in diverse and changing environments.