Biology

Invertebrate Zoology

799 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

Traumatic insemination is the mating practice in some species of invertebrates in which the male pierces the female's abdomen with his penis and injects his sperm through the wound into her bloodstream. It is observed in which of the following organisms?

  1. Blue milkweed beetle

  2. Euryplatea nanaknihal

  3. Mantodea

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

Traumatic insemination is seen in Cimex lectularius (bed bug). The male stabs female with knife like penis and injects sperm directly into her bloodstream.

Multiple choice

How do the earthworms move their body? Choose the correct option.

  1. They slither by looping sideways.

  2. Strong muscles and light bones help them move.

  3. The muscles of the legs conect with legs to help them move.

  4. They move by alternate extension and contraction of the body using muscles.

  5. They move with the help of a muscular foot.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct. They move by alternate extension and contraction of the body using muscles.

Multiple choice

How many pairs of legs and wings, do cockroaches have?

  1. Two pairs of legs and one pair of wings.

  2. Three pairs of legs and two pairs of wings.

  3. Six pairs of legs and four pairs of wings.

  4. One pair of legs and two pairs of wings.

  5. Two pairs of legs and three pairs of wings.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct. The cockroach has three pairs of legs that help it to walk and two pairs of wings that help it to fly.

Multiple choice

Directions: Carefully read about these creatures and then answer the question that follows.They have tiny, stiff hair-like projections, called bristles, under their body and a slimy substance secreted by them helps them to move. They eat their way through the soil. They throw away undigested food, which improves the quality of the soil.

Which of the following creatures eat their way through soil and improve its quality by throwing away undigested food?

  1. Snakes

  2. Earthworms

  3. Snails

  4. Caterpillars

  5. Cockroaches
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 Yes. Earthworms eat their way through the soil. They throw away undigested food, which improves the quality of the soil.

Multiple choice

Which of the following animal/s have an outer skeleton?

  1. Snail

  2. Snake

  3. Earthworm

  4. Squid

  5. Octopus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct. The outer skeleton of the snail is the shell, which  is made up of calcium carbonate. The snail pulls this shell along as it moves. The snail can even hide its head inside the shell.