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

Directions: Rishab has a beautiful pet dog 'Tommy'. One day, he observed a small insect between its toes. He removed it carefully from the toe and observed it curiously, as a chapter titled 'Diversity In Living Organisms' was being taught in the school.

Identify the organism from options given below which belongs to the same phylum as the insects.

  1. Centipede

  2. Earthworm

  3. Spiders

  4. Both 1 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Insects belong to the phylum Arthropoda. Both centipedes and spiders are also members of the phylum Arthropoda.

Multiple choice

Directions: Rishab has a beautiful pet dog 'Tommy'. One day, he observed a small insect between its toes. He removed it carefully from the toe and observed it curiously, as a chapter titled 'Diversity In Living Organisms' was being taught in the school.

To which of the following phylum do insects belong?

  1. Phylum Insecta

  2. Phylum Arthropoda

  3. Phylum Annelida

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

Insects are classified under the phylum Arthropoda, which is characterized by jointed appendages and an exoskeleton.

Multiple choice

Although the bite of brown recluse spiders are rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its poison.

  1. brown recluse spiders are rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its

  2. brown recluse spiders are rarely fatal, they cause chronic flesh wounds and pose the greatest danger to the infant and elderly, who are particularly vulnerable to their

  3. the brown recluse spider is rarely fatal, it causes chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to their

  4. the brown recluse spider is rarely fatal, it causes chronic flesh wounds and poses the greatest danger to infants and the elderly, who are particularly vulnerable to its

  5. the brown recluse spider is rarely fatal, they cause chronic flesh wounds, posing the greatest danger to the infant and elderly, who are particularly vulnerable to its
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Option D correctly uses the singular 'spider' to match the singular verb 'is' and the singular pronoun 'its'. It also fixes the parallel structure for the list of victims.

Multiple choice

The symbiont in the gut of termites is

  1. trichonympha

  2. vorticella

  3. gonyaulax

  4. paramecium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 Trichonympha is a genus of parabasalid protists that live in the intestines of many, if not most, termite species. They are symbiotes, in that they break down the cellulose in the wood and plant fibers their hosts eat.

Multiple choice

Which of the following excretes allantoin?

  1. Blowfly larvae

  2. Cockroach

  3. Birds

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

The excretory organ of cockroach is the malpighian tubules. It is found at the junction of the midgut and hind gut and are about 150 in number. They are fine, yellow coloured and branched threads, present in bundles. They lie freely in the haemolymph. It excretes uric acid.

Multiple choice

Which of the following is the casting-off of the outer dead rigid covering of an animal body during its growth?

  1. Ommatidia

  2. Stadium

  3. Instar

  4. Ecdysis

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

Ecdysis is the moulting of the cuticle in many invertebrates. Moulting is the defining feature of Ecdysozoa, comprising the arthropods, nematodes, velvet worms, horsehair worms, tardigrades and Cephalorhyncha. Since the cuticle of these animals typically forms a largely inelastic exoskeleton, it is shed during growth and a new, larger covering is formed.