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 biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

Which of the following have "ommatidia" as unit of eye?

  1. Pheretima

  2. Housefly

  3. Pila

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

Compound eyes are the characteristic feature of insects. The compound eye of insects consists of many ommatidia, each of which is a separate visual unit that portrays each object into several broken pieces. This type of vision is called as mosaic vision. Among the given options, housefly is an insect and has ommatidia as a unit of an eye. Pheretima (annelid) and pila and sepia (molluscs) do not have compound eyes. 

So, the correct answer is option B.

Multiple choice biology diseases and hygiene diseases caused by protozoa protozoan disease protozoa: benefits and harmful effects

Bladderworm is the common name of ______________.

  1. Taenia solium

  2. Ancylostoma duodenale

  3. Enterobius vermicularis

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

Taenia solium, is the pork tapeworm, a tapeworm belonging to the cyclophyllid cestode family .

The central space is filled with fluid like a bladder, hence it is also called bladder worm

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Bilious is

  1. Greenish vomit

  2. Yellowish vomit

  3. Brownish vomit

  4. Blackish vomit
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Bilious is greenish vomit. The green colour is due to the presence of bile which is formed in the liver and stored in the gall bladder. Further, it is secreted in the duodenum. When this bile get mixed with the food and comes out with vomiting, it gives greenish appearance. It may be due to bowel obstruction or other health problems. So, the correct option is A.
Multiple choice zoology diversity in living world hemichordata phylum hemichordata chordates and hemichordates

The body of acorn worms can be divided as

  1. Anterior proboscis

  2. Intermediate collar

  3. Posterior trunk

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

Acorn worms is a hemichordate. They are closely related to echinoderms. They are solitary worm-shaped organisms. They can be traced in burrows and are deposit feeders, but some species are pharyngeal filter feeders.

The body of acorn worms is worm-shaped and divided into an anterior proboscis, an intermediate collar, and a posterior trunk. The proboscis is a muscular and ciliated organ used in locomotion and in the collection and transport of food particles. The mouth is located between the proboscis and the collar. The trunk is the longest part of the animal.
So, the correct answer is option D.

Multiple choice zoology insects and human welfare bee keeping apiculture apiculture, sericulture and fisheries

Which one shows arrhenotoky in development?

  1. Pumea

  2. Drosophila

  3. Apis

  4. Bonellia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
In most honey bees, unfertilized eggs develop into haploid males via arrhenotokous parthenogenesis. The Cape honey bee (Apis mellifera capensis) is different. Although mated queens always produce females sexually, if workers lay unfertilized eggs the eggs develop into diploid females via thelytokous parthenogenesis.

So, the correct answer is 'Apis'.
Multiple choice bio-chemistry unit of living - cell eukaryotic cell kinds of cell introduction to eukaryotic cell

The projections of different lengths protruding out of the body of Amoeba is called as

  1. Walking legs

  2. Limbs

  3. Pseudopodia

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

Pseudopodia, are the locomotory organs, which are mainly present in the prokaryotic cell or the unicellular protist. These are cytoplasm filled temporary projections. These are also used for the process such as phagocytosis. It is also used in major mechanism to remove pathogens and cell debris e.g.,

Amoeba.

Multiple choice movement in plants living world of plants - plant physiology biology

Closure of lamina in Venus Fly Trap (Dionaea muscipula) after an insect happens to alight over it is

  1. Thigmotropism

  2. Haptonasty

  3. Chemotropism

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

Haptonasty or thigmonasty is the non-directional movement of a plant part in response to the touch of an object. The closing of the lamina of Venus fly trap is a type of haptonasty as a result of contact with an insect. If an insect happens to cross the lamina, the leaf will close quickly to prevent its escape. 

The directional growth movement of a plant part in response to the touch of an object is called thigmotropism. The climbing parts of the plant such as tendrils grow towards any support which they happen to touch  and wind around that support. 
The movement of a plant part in response to a chemical stimulus is called chemotropism. The growth of the pollen tube towards the ovule during the process of fertilization in a flower is an example of chemotropism. 
The non-directional movement of a plant in response to a chemical stimulus is known as chemonasty. The movement due to changes in turgor or changes is growth influenced by movement in ions is an example of chemonasty.
Thus, the correct answer is option B. 

Multiple choice biology digestion and absorption minerals and vitamins nutrition and diet role of various nutrients

Which one of the following is wrong about the digestive system of a grasshopper?

  1. Wall of crop is muscular and its lumen is lined with cutile.

  2. A pair of small, branched salivary glands associated to anterior end of midgut.

  3. Heptatic caecae are six pairs of glands associated to anterior end of midgut.

  4. Malpighian tibules are the thread-like tibules with blunt tips associated to the function of midgut and hindgut.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Grasshoppers have the typical insect body plan of head, thorax and abdomen.
 The thorax and abdomen are segmented and have a rigid cuticle made up of overlapping plates composed of chitin. Hence, Wall of a crop is muscular and its lumen is lined with cutile is wrong about the digestive system of a grasshopper.

So, the correct option is 'Wall of the crop is muscular and its lumen is lined with cutile.'.

Multiple choice

Insects like the grasshopper take air through __________.

  1. filters

  2. gills

  3. lungs

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

Insects breathe through a system of tiny openings along their thorax and abdomen called spiracles. These lead to a network of tubes called tracheae that deliver oxygen directly to tissues.

Multiple choice

What is the difference between an insect and an arachnid?

  1. legs

  2. body

  3. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Insects have six legs and three body regions (head, thorax, and abdomen), whereas arachnids have eight legs and two body regions (cephalothorax and abdomen). Therefore, both the number of legs and body division differ between them.