Biology

Invertebrate Zoology

634 Questions

Invertebrate zoology covers the anatomical and physiological characteristics of animals without backbones, focusing heavily on insects, earthworms, and other arthropods. These questions explore structural components like respiratory organs and excretory systems. This topic forms a crucial part of the biology section in various competitive exams.

Cockroach anatomyEarthworm organsInsect ordersRespiratory organsExcretory organs

Invertebrate Zoology Questions

Multiple choice

Cysticercus is the

  1. larval stage of Taenia

  2. infective stage of monocystis

  3. part of internal ear of frog

  4. abdomen appendage of cockroach
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cysticercus is the larval stage of the tapeworm Taenia solium, which develops in the intermediate host (pig).

Multiple choice

Match the following:

 
Organisms Organs for excretion
a. Earthworm 1. Malpighian tubules
b. Cockroach 3. Kidneys
c. Cat 3. Nephridia

  1. a - 3, b - 2, c - 1

  2. a - 3, b - 1, c - 2

  3. a - 1, b - 3, c - 2

  4. a - 1, b - 2, c - 3

  5. a - 2, b - 1, c - 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. In earthworms, the organ for excretion is nephridia. In cockroach, the organs for excretion are malpighian tubules. In cats, the organ for excretion is kidney.

Multiple choice

Flame cells are excretory organs of

  1. Leech

  2. Nereis

  3. Earthworm

  4. Tapeworm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Flame cells are specialized excretory cells found in Platyhelminthes, such as tapeworms and flatworms. They function to filter waste products from the body.

Multiple choice

A love dart is a well known sharp, calcareous or chitinous dart created by hermaphroditic land snails. Which of the following snails creates and uses love darts?

  1. Periwinkle

  2. Whelk

  3. Bullacta exarata

  4. Escargot

  5. Otala lactea
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Otala lactea  is a large, edible species of air-breathing land snail. Archaeological recovery at the Volubilis illustrates prehistoric exploitation of O. lactea by humans. This snail creates and uses love darts as part of its courtship behaviour, prior to mating.

Multiple choice

Which of the following compounds is present in some scale insects ?

  1. Acrylic acid

  2. Carminic acid

  3. Carnitine

  4. Atrazine
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carminic acid is a red glucosidal hydroxyanthrapurin that occurs naturally in some scale insects, such as the cochineal and the Polish cochineal. The insects produce the acid as a deterrent to predators. Carminic acid is the colouring agent in carmine.

Multiple choice

The set of homologous organs amongst the following is

  1. Wings of insect and wings of bat

  2. Eyes of man and eyes of squid

  3. Gills of fish and lungs of man

  4. Tendril in cucurbit and thorn in citrus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tendril in cucurbit and thorn in citrus are homologus and have the same origin but different functions.

Multiple choice

Mosquitoes receive air through

  1. flagellum

  2. cilia

  3. Pedicel

  4. None of the above

  5. -
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The larva breathes through a tube called a siphon that touches the surface of the water and help the mosquitoes to receive air.