Structural Organisation in Animals

Structural Organisation in Animals

Moderate Questions
Difficult Questions

Advanced Zoology

Animal Kingdom
Structural Organisation in Animals
Digestion and Absorption
Breathing and Exchange of Gases
Body Fluids and Circulation
Excretory Products and their Elimination
Locomotion and Movement
Neural Control and Coordination
Chemical Coordination and Integration
Human Reproduction
Human Health and Disease
Biotechnology Principles and Processes
Biomolecules (Zoology)
Evolution (Zoology)
Biotechnology and its Applications
Reproductive Health
  1. Male and female cockroaches can be distinguished externally through








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    Sexual dimorphism is found in cockroach. A pair of anal style are present in male cockroach only. Female has broader abdomenal segments.

    Correct Option: A

    Sexual dimorphism is found in cockroach. A pair of anal style are present in male cockroach only. Female has broader abdomenal segments.

  1. Select the correct option with respect to cockroaches








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    In cockroaches, males bear a pair of short, thread like anal styles which are absent in females.

    Correct Option: C

    In cockroaches, males bear a pair of short, thread like anal styles which are absent in females.

  1. What external changes are visible after the last moult of a cockroach nymph?








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    The development of cockroach is paurometabolous meaning that their development is through nymphal stage. The nymphs look very much like adults. The nymph grows by moulting about 13 times to reach adult form. The last nymphal stage has wingpads while adult cockroaches have wings.

    Correct Option: B

    The development of cockroach is paurometabolous meaning that their development is through nymphal stage. The nymphs look very much like adults. The nymph grows by moulting about 13 times to reach adult form. The last nymphal stage has wingpads while adult cockroaches have wings.

  1. The terga, sterna and pleura of cockroach body are joined by:








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    Between the various sclerite, a flexible membrane exists which is known as arthrodial membrane.

    Correct Option: B

    Between the various sclerite, a flexible membrane exists which is known as arthrodial membrane.

  1. The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of:








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    The body cells in cockroach discharge their nitrogenous waste in the haemolymph as a solution of sodium or potassium urate (a weak alkaline fluid).

    Correct Option: A

    The body cells in cockroach discharge their nitrogenous waste in the haemolymph as a solution of sodium or potassium urate (a weak alkaline fluid).