Mcq on Phylum Aschelminthes

Introduction:-Aschelminthes are also known as roundworms in some circles. The presence of a pseudocoelom distinguishes them from other species. It is now considered an extinct phylum of invertebrates, and the animals previously classified under it are now classified under ten different phyla. They are organised at the organ-system level in terms of their physical structure. Along with the muscular pharynx, the digestive system includes a fully developed alimentary canal. In Ascaris, the rectum opens into the anus in females and into the cloaca in males, both of which are located posteriorly on the body. Due to the absence of a respiratory system, gaseous exchange takes place through the body surface itself. They do not have a skeletal system; instead, the pseudocoelomic fluid serves as a hydroskeleton in their bodies.

1.It is known that Ascaris has cells in its excretory system.

(a) The flame

(b) Renette is a woman who lives in the United States.

(c) Nephron is a type of kidney.

(d) Glands of the green colour

Answer:Here the correct answer is option(b)

Explanation:The excretory system in Ascaris is made up of one or two large renette gland cells, which are arranged in a radial pattern. A kidney is an excretory organ that is primarily found in chordates in various forms, with the true kidney only being found in mammals.

2. The syncytial epidermis can be found here.

(a) Housefly is a type of fly.

(b) Metaphire is a type of gemstone.

(c) The periplaneta is a type of periplaneta that is found in the periplaneta.

(d)Ascaris is a genus of venomous snakes.

Answer:Here the correct answer is option(d)

Example: One of the characteristics of the Phylum Aschelminthes (also known as Nemathelmintha) is that the epidermis is syncytial and the body is covered with a thick cuticle. Explanation: The phylum Cilia is devoid of Cilia. Ascaris is a phylum that includes Ascaris.

3.is referred to as a coelom, which is derived from blastocoel.

(a) Haemocoel is a type of haemoglobin.

(b) Enterocoel is an abbreviation for enterocoel.

(c) Schizocoel is a type of psychotic disorder.

(d)pseudocoel (pseudo-coel)

Answer:Here the correct answer is option(d)

Explanation:The pseudocoelom is the term used to describe this particular body cavity. It is referred to as a pseudocoelom because it does not have a complete layer of mesodermal cells lining it. The cavity is formed by removing the blastocoel.

4. This is the basis on which female Ascaris can be distinguished from male Ascaris.

(a) The presence of postanal and preanal papillae on the surface of the skin

(b) Two spicules were discovered at the posterior end of the spicule.

(c) Cloacal aperture that is shared by all

(d) A posterior end that is straight.

Answer:Here the correct answer is option(d)

Explanation: The tail (posterior end) is curved ventrally in the shape of a hook, and the conical tip is curved ventrally as well. Female worms are longer and stouter than male worms, measuring 25-49cm in length and 5mm in diameter. Male worms are shorter and stouter. Straight and blunt is the shape of the tail (posterior end).

5. In the case of Ascaris, the period of incubation outside the human body is one year.

(a) For a period of more than 30 days

(b) between 4 and 8 days

(c) between 8 and 14 days

(d) Between 13 and 30 days

Answer:Here the correct answer is option(d)

Explanation:Because the mature fertilised female worm remains in the intestine while the disease is contagious, ascariasis is considered contagious. The typical lifespan is 13-30 days, but it has been reported to live for longer periods of time.

6. The infective stage of the Ascaris life cycle is the sixth stage.

(a) The third lava flow

(b) An egg that has been fertilised

(c)ysts are a type of cyst.

(d) Second larval stage

Answer:Here the correct answer is option(d)

Explanation: Because Ascaris does not have an intermediate host, man becomes infected by ingesting Ascaris eggs that contain the infective second stage rhabditoid larva while consuming contaminated food or water.

7. The Ascaris’s body cavity is pseudocoel, which means that

(a) consists primarily of parenchyma.

(b)The pseudocoelomic fluid is contained

(c) It is extremely well-bound by the muscle layer and internally by the intestine.

(d) is composed of large cells known as pseudocoelocytes.

Answer:Here the correct answer is option(c)

Explanation:In addition to containing and maintaining the coelomocytes (see Coelomocyte Section), the pseudocoelom also serves to maintain and regulate turgor-hydrostatic pressure throughout the animal’s body, to act as a lubricant between tissues, as well as to facilitate intercellular signalling and nutrient transport.

8. The parasite Ascaris lumbricoides has been discovered living in the intestine of humans.

(a) The pig

(b) Goats and sheep are the most common.

(c) The monkey

(d) Homo sapiens australis

Answer:Here the correct answer is option(d)

explanation:Ascariasis is caused by ingesting infected eggs, which is explained in more detail below. This can occur when contaminated dirt-covered hands or fingers are placed in the mouth, or when consuming vegetables or fruits that have not been thoroughly cooked, washed, or peeled before consumption.

9. The process of morphologically distinguishing between male and female sexes is referred to as

(a) Polymorphism is a type of variation.

(b) none of the options listed above

(c) a variation in

(d) Sexual dimorphism is a type of sexual dimorphism.

Answer:Here the correct answer is option(d)

Explanation: In plants, it is surprising how little is known about the relationship between fine-scale sex-specific cell and leaf morphological traits and sex-specific physiology and population sex ratios in relation to reproductive success. Such information is essential for understanding the interrelationships between sex-specific morphological and physiological characteristics, as well as how this interplay influences.

10. There is no alternative host for this.

(a)The tapeworm.

(b) Plasmodium vivax is a parasite that infects humans.

(b) Tapeworm is a type of parasite.

(c)Ascaris lumbricoides is a type of ascaris.

(d) Fasiola hepatica is a type of liver fungus.

Answer:Here the correct answer is option(c)

Explanation: The human being is the final and irreplaceable host. There is no such thing as an intermediate host. The route of transmission is human – faeces – human. Ascaris lumbricoides is a species of ascarid that lives in the small intestine.

11.Male Ascaris can be distinguished from female Ascaris by the following characteristics:

(a) The body is elongated.

(b) The presence of sucker punters

(c)Pineal spicules are found on the curve of the tail.

(d) Pineal spicules on the end of a tapering tail

Answer:Here the correct answer is option(c)

explanation:For clarification, Ascaris exhibits dimorphism, with the female being longer and wider than the male In females, the tail has a curved shape with pineal spicules and carries a transverse anus as well as a chemoreceptor known as an amphid between the anus and the tip of the tail. In males, the tail has a straight

12.It has been discovered that Ascaris is an endoparasite in

(a) Pork muscle

(b) The blood of the human race

(c) The human body’s cavity

(d) The gastrointestinal tract of a person

Answer:Here the correct answer is option(d)

Explanation: Ascaris is a parasite that lives in the human intestinal tract. It is the most common type of worm infection in humans. Human small intestine is home to the larvae and adults of the worms, which can cause intestinal disease. Small intestine