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

Mosquitoes do not have teeth.They suck the human blood with a tube.This tube like structure through which they sucks blood is called_______.

  1. food pipe

  2. wind pipe

  3. straw

  4. proboscis

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

The part of the mosquito that looks like a big long nose is called it's proboscis. It is  part of the mosquito's mouth. Proboscis is a tubular feeding and sucking organ of certain insects like mosquitoes.They stick the long tubular organ in our body, and sucks the blood.

Multiple choice

Flatworms have light-sensitive organs known as

  1. ocelli

  2. rheoreceptors

  3. auricles

  4. statocysts

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

In some flatworms, the process of cephalisation includes the development in the head region of light-sensitive organs called ocelli or eye spots. For example, planaria.

Multiple choice

Which of the following is a set of true worms?

  1. Earth worm, Fire worm, Flat worm

  2. Round worm, Filarial worm, Hook worm

  3. Flat worm, Round worm, Hook worm

  4. Earth worm, Hook worm, Flat worm

  5. Filarial worm, Fire worm, Flat worm
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Round worm (Ascarislumbricoides), Filarial worm (Wuchreria bancrofti), Hook worm (Ancylostomaduodenale): All are true worms, i.e., members of Phylum Aschelminthes.

Multiple choice

Which of these organisms has a closed type of circulatory system?

  1. Cockroach

  2. Earthworm

  3. Mollusc

  4. Scorpion

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

Earthworm has closed type of circulatory system. Here blood is pumped through a closed system of arteries, veins, and capillaries. Capillaries surround the organs, making sure that all cells have an equal opportunity for nourishment and removal of their waste products.

Multiple choice

Which of the following is/are not related with earthworms?

  1. Bristles

  2. Hollow bones

  3. Slimy secretion

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

The body of an earthworm is soft as it does not have bones. It moves by the peristaltic action of muscles and affixes itself to the ground with the help of large number of tiny bristles. Also, its body secretes a slimy substance to help in the movement.