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 zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

Earthworm has no special sense organs, still they are sensitive to

  1. Light and sound

  2. touch and sound

  3. Touch, taste and light

  4. Touch, taste, light and vibrating
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In earthworms there are specialised nerves with photoreceptors in the nerve endings present in the skin and the impulses from these nerves are carried rapidly to the muscles of the earthworm. This makes them sensitive to stimuli such as light and sound. 

So, the correct option is 'Light and sound'.

Multiple choice zoology environmental science structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

The common Indian earthworms are:

  1. Pheretima and Tigrina

  2. Pheretima and Hirudo

  3. Pheretima and Terrestris

  4. Pheretima and Lumbricus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pheretima and Lumbricus are the most commonly studied genera of earthworms in India. Other options include names like Tigrina or Terrestris which are not standard genus-species pairings used to describe common Indian earthworms.

Multiple choice zoology earthworm structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

Earthworm has no special sense organs, still they are sensitive to _______________.

  1. Light and sound

  2. Touch and sound

  3. Touch, taste and light

  4. Touch, taste,light and vibrating
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Earthworms rely most heavily on their sense of touch. Nerve endings cover the worm's entire body so that he can feel vibrations and different textures in his surroundings. Their sense of touch helps worms avoid predators and safe conditions.
Tiny sensory organs cover worms' bodies and provide their sense of taste. These organs are called chemoreceptors, and they help worms detect chemical sensations, which translate into taste reception. Worms also use these chemoreceptors to smell the air and their potential food source. While worms have no eyes, they are still able to sense (and avoid) the presence of light. Since sunlight is dangerous and can dry out worms' skin, this sense is especially important for their survival.
Worms have no external ears, so their sense of touch and vibration receptors compensate for their lack of hearing.
So, the correct option is 'Touch, taste,light and vibrating'.
Multiple choice zoology earthworm structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

Earthworm has around ............ segments on its body.

  1. 60 to 100

  2. 100 to 120

  3. 120 to 140

  4. More than 140
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Earthworm (Pheretima) belongs to order Haplotaxiada of class Oligochaeta under the phylum Annelida. The body of earthworm is rounded and divided into a number of segments. There are around 100 to 120 segments on the body of earthworm.
So, the correct answer is '100 to 120'.
Multiple choice zoology earthworm structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

Earthworm is

  1. Ureotelic

  2. Ammoneotelic

  3. Uricotelic

  4. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ureotelic organisms are those that excrete nitrogenous waste in the form of urea. Earthworms are ureotelic since their nitrogenous waste composition consists of 40% urea and 20% ammonia. 

So, the correct answer is 'Ureotelic'.

Multiple choice zoology excretory system of human structure of nephron excretory system nephron

Malpighian body is present in

  1. Skin

  2. Kidney

  3. Testes

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

Nephrons are the cells of kidney which are composed of a renal corpuscle and a renal tubule.  The renal corpuscle is also known Malpighian body. It consists of cup like double walled structure known as Bowman’s capsule and the bunch of capillaries present in the Bowman’s capsule is known as glomerulus. It helps in filtration of blood at high pressure. So, the correct answer is 'Kidney'.

Multiple choice botany transpiration guttation excretion in plants long distance transport of water

The hydathodes are related with

  1. Transpiration

  2. Guttation

  3. Bleeding

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Guttation is defined as loss of water in liquid form through water stomata or hydathodes. The water is lost as a dilute solution of mineral salts. Guttation occurs under the influence of positive root pressure.

Multiple choice botany asexual and sexual reproduction in plants structure of male and female reproductive structures structure of ovule gynoecium
A noncellular layer present on the outside of nucellus is

  1. Integument

  2. Exine

  3. Endostomium

  4. Cuticle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
• The integument is the protective covering of ovule. Integuments may be one or two in number.
• The exine is the outer layer of pollen cell wall. It is chiefly composed of sporopollenin.
• Endostomium, also known as endostome, is the space between the inner Integument and Nucellus.
• Cuticle is a waxy covering which fills the space between the ovary wall and outer integument.
Thus, a non-cellular layer present on the outside of nucellus is Cuticle.
So, the correct answer is D.
Multiple choice biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Which of the following statement is correct?


A. Annelids have special organs of excretion called nephridia.
B. Cockroach belongs to class Arthropoda.
C. Crocodiles belong to the class Amphibia.

  1. Both A and B

  2. Only A

  3. Only B

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

In earthworms, members of the phylum Annelida, the excretory system consists of structural units called nephridia. The nephridium is an invertebrate organ which occurs in pairs and performs a function similar to the vertebrate kidney. Nephridia remove metabolic wastes from an animal's body. Cockroach belongs to class Arthropoda because it has jointed appendages and the hard exoskeleton. Crocodiles are reptiles, not amphibians because they lay their eggs on the land, not in the water.

So, the correct answer is 'Both A and B'.

Multiple choice biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Which of the following statement is the true description about an animal concerned?

  1. Cockroach has 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen).

  2. The alimentary canal in earthworm consists of pharynx.

  3. The body of frog is divisible into head, neck and trunk.

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  •  A cockroach has 10 pairs of spiracles on its body, out of which, two are present on its thorax and the rest are present on its abdomen.
  • The alimentary canal of Pheretima consists of pharynx among other organs.
  • The body of the frog is divisible into head and trunk.
So, The correct answer is 'Both A and B'.

Multiple choice biology diversity in living world characteristics of vertebrates classification of vertebrata classifications of chordata

Petromyzon attaches to the host body with the help of

  1. Suckers

  2. Hookes

  3. Both A and B

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

Petromyzon (lampreys) are all carnivorous and are true predators. The method of attack is very peculiar. It attack fishes, turtles etc and it attach themselves by suctorial mouth which is circular in shape. Mouth acts a sucker, it rasps the flesh of the prey with its tongue. Teeth which are situated around the mouth sink into the flesh of the prey and serve it to hold properly. Hence, option D is correct answer.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

An organism which has Malpighian tubule as excretory organ can be placed in phylum

  1. Arthropda

  2. Annelida

  3. Platyhelminthes

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Malpighian tubules are the excretory organs in all insects. The tubules often occur in two’s or multiples of two. As insects belong to the phylum Arthropoda, the organism must be placed under it. 

So, the correct option is 'Arthropoda'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Name the excretory organs of grasshopper.

  1. Malphigian tubule

  2. Nephridia

  3. Flame cells

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The excretory organs of grasshopper are the malpighian tubules which are coiled about in the haemocoel and open into the anterior end of the hindgut. The malpighian tubules have a wall of a single layer of cells with striated inner border. Their free ends are completely closed. In the majority of Arthropods, Malpighian tubules are the excretory organs. So, the correct option is 'Malpighian tubule'.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Organs of excretion in annelids are

  1. Suckers

  2. Nephridia

  3. Lungs

  4. Kidney
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Organs of excretion in annelids are nephridia. The nephridium is an invertebrate organ which occurs in pairs and performs a function similar to the vertebrate kidney. Nephridia remove metabolic wastes from an animal's body. 
So, the correct answer is 'Nephridia'.
Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

In which one of the following organisms its excretory organs are correctly stated?

  1. Frog - kidneys, skin and buccal epithelium

  2. Human - kidneys, sebaceous glands and tear glands

  3. Earthworm - pharyngeal, integumentary and septal nephridia

  4. Cockroach - Malpighian tubules and enteric caeca
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nephridia is the earthworm's excretory organ. Earthworms are called septal, integumentary, and pharyngeal nephridia in three kinds of nephridial structures. These three nephridial structures are present in various body positions and differ in structures as well. Septal and pharyngeal nephridia are both enteronephric, i.e. they expel nitrogen products to the gut. Integumentary nephridia is exonephric, i.e. products of nitrogen waste are discharged outside straigh