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 evs food trends types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

In which animal both intracellular and intercellular digestion occurs

  1. Hydra

  2. Earthworm

  3. Nematode

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

Hydra is a cnidarian that exhibits both intracellular digestion (within food vacuoles of gastrodermal cells) and extracellular digestion (within the gastrovascular cavity). Other options like earthworms and nematodes primarily rely on extracellular digestion within a complete digestive tract.

Multiple choice evs food trends types of ecological pyramids the muscular system and digestive system in human beings introduction to human digestive system

Choose the correct answer from the allternatives given.
Which part of the digestive system secretes peritrophic membrane around the food in cockroach?

  1. Crop

  2. Gizzard

  3. Hepatic caecae

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

Answer C: Hepatic Caecae

The digestive juices flow into the stomach owing to the caecae secretion. The midgut is lined by a peritrophic membrane and not by a cuticle or cuticle.

Multiple choice biology coordination - the linking system nervous systems involved in emotions types of nervous system components of nervous system

The simplest type of nervous system in the form of network of neurons is present in which of these lower organisms?

  1. sycon

  2. hydra

  3. earthworm

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

The second type of water-current system found also in calcareous sponges, is at first characterized by choanocytes that surround fingerlike projections of the sponge wall. So the correct option is ' sycon'.

Multiple choice biology breath and blood of life different types of circulatory systems stomata and transpiration transport in organisms

Heart of cockroach is a

  1. Membranus

  2. Muscular and tube like

  3. Absent

  4. Filled with blood having RBC
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A) The heart is not membranous.

B) The heart is an elongated muscular tube lying along the mid-dorsal line of the thorax and abdomen.
C) A muscular heart with thirteen chambers is present.

D) The blood of cockroaches consists of clear colourless plasma and cells called haemocytes. RBCs are absent. The blood is devoid of any pigments.
So the correct answer is 'Muscular and tube like'.

Multiple choice zoology sustainable agriculture microbes and farming biopesticide environmental protection

What causes the inactive form of Bt toxin i.e. protoxin to get converted into its active form in the body of an insect?

  1. Temperature of the gut

  2. Enzymes present in the saliva

  3. Alkaline pH of the gut

  4. There is no specific reason
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Soil bacterium Bacillus thruingiensis (Bt) produces proteins that kill certain insects like lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes).Bacillus thuringinesis forms some intracellular protein crystals. These crystals contain a toxic insecticidal protein. The Bt toxin protein exists as an inactive toxin and is coverted into an active form due to the alkaline pH of the alimentary canal that solubilities the crystals. The activated toxin binds to the surface of midgut epithelial cells and creates pores which cause cell swelling and lysis and finally cause death of the insect.

So, the correct answer is 'Alkaline pH of the gut'.

Multiple choice

Which insect is known for its ability to produce a valuable medicinal compound called allantoin, used in skincare products and wound healing?

  1. Snails

  2. Slugs

  3. Worms

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

Snails are known for their ability to produce allantoin, a medicinal compound used in skincare products and wound healing.

Multiple choice

Which of the following is a function of choanocytes in sponges?

  1. Filter feeding

  2. Reproduction

  3. Excretion

  4. Sensing environmental stimuli
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Choanocytes are specialized cells in sponges that are responsible for filter feeding, capturing food particles from the surrounding water.

Multiple choice

Which of the following is a function of pinacocytes in sponges?

  1. Filter feeding

  2. Reproduction

  3. Excretion

  4. Protection and structural support
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pinacocytes are specialized cells in sponges that are responsible for protection and structural support, forming the outer layer of the sponge body.

Multiple choice

Which of the following is a function of archaeocytes in sponges?

  1. Filter feeding

  2. Reproduction

  3. Excretion

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

Archaeocytes are specialized cells in sponges that are involved in a variety of functions, including filter feeding, reproduction, and excretion.

Multiple choice

Which of the following is the largest nematode found in India?

  1. Ascaris lumbricoides

  2. Wuchereria bancrofti

  3. Brugia malayi

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

Dracunculus medinensis, commonly known as the Guinea worm, is the largest nematode found in India. It can grow up to 1 meter in length.

Multiple choice

What type of worms are typically used in vermicomposting?

  1. Red Wigglers

  2. Nightcrawlers

  3. Earthworms

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

Red Wigglers (Eisenia fetida) are the most commonly used worms in vermicomposting due to their high composting efficiency and tolerance to a wide range of environmental conditions.

Multiple choice

What is the scientific name of the Indian Earthworm?

  1. Pheretima posthuma

  2. Lumbricus terrestris

  3. Eisenia fetida

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

The scientific name of the Indian Earthworm is Pheretima posthuma.

Multiple choice

What is the function of the clitellum in Indian Annelids?

  1. Reproduction

  2. Excretion

  3. Respiration

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

The clitellum is a specialized region of the body of Indian Annelids that is responsible for reproduction.