OBJECTIVES
OBJECTIVES
Multiple Choice Questions MCQs
1. Which is irrelevant for aschelminths?
(a) Cutely (b) Mesenteries (c) Protonephridia (d) Cephalization
2. The constant number of cell in an organ or tissue is:
(a) Cephalization (b) Mesenteries (c) Protonephridia (d) Cutely
3. Head formation is :
(a) Cutely (b) Mesentries (c) Protonephridia (d)Cephalization
4. Which structure is common in rotifers?
(a) Cutely (b) Messentries (c) Corono (d) Cephabelization
5. Shell or rotifers is called:
(a) Cutely (b) Mesentries (c) Lorica (d)Corona
6. The structure used for grinding of food is:
(a) Corona (b) Mastax (c) Lorica (d) Cutely
7.Set of jaws in rotifers is called:
(a) Cutely (b) Mesenteries (c) Trophi (d) Corona
8. The excretory system of nematods is composed of:
(a) Protonephridia (b) Metanephridia (c) Renette cells (d) Flame cells.
9. Giant intestinal round worm is:
(a) Enterobius (b) Ascaris (c) Nectar (d) Trichinella
10. Pin worms are:
(a) Enterobius (b) Ascaris (c) Nectar (d) Trichinella
11.The pork worm is:
(a) Enterobius (b) Ascaris (c) Nectar (d) Trichinella
12. Filariform larva is formed in:
(a) Ascaris (b) Trichinella (c) Enterobius (d) Nectar
13.The nematode transmitted by pig is:
(a) Enterobius (b) Ascaris (c) Nectar (d) Trichinella
14.The Filarial Worms are:
(a) Wuchereria (b) Trichinella (c) Enterobius (d) Nectar
15.Elephantiasis is caused by:
(a) Enterobius (b) Trichinella (c) Wuchereria (d) Nectar
Ans
1. (h) 2. (d) 3. (d) 4. (c) 5. (c) 6. (b) 7. (c) 8. (c) 9. (b) 10. (a) 11. (d) 12. (d) 13. (d) 14. (a) 15. (c)
Fill in the blanks
- The various internal organs lie free in the cavity. Such a cavity is called a…………………………
- Many aschelminths show_________
- Most aschelminths have an osmoregulatory system of________
- The rotifers derive their name from characteristic ciliated organ called.
- That is why the rotifers were earlier called _________ animalcules.
- The inner walls of the mastax contain several sets of jaws called__
- Most rotifers have a single ovary. A syncytial (multinucleate) ___ attached with it.
- Some roundworms have__________ tbr protection.
- The proximal end of oviduct is swollen to form a________ receptacle.
- Rhabditiform larva molts and becomes the infective____________ larva.
- Two species of human_________ worms are W. bancrofil and W. malayi.
- The adult filarial nematodes copulate in the lymphatic vessels. They produce larvae called……………………..
13. ________ are commonly called horsehair worms or Gordian worms.
Ans:
1. pseudocoelom 2. eutely 3. protonephridia 4.corona 5. wheel 6. trophi 7. vitellarium 8. head shields 9. seminal 10. flariform 11. filarial 12. microfilarie 13. Nematomorphs
True/False
1. The various internal organs lie free in the cavity. Such a cavity is called a pseudocoelom.
2. Many aschelminths show metamorphosis.
3. Most aschelminths have an osmoregulatory system of metanephridia.
4. The rotifers derive their name from characteristicciliated organ called corona
5. That is why the rotifers were earlier called wheel animalcules.
6. The inner walls of the mastax contain several sets of jaws called radii.
7. Most rotifers have a single ovary. A syncytial (nultinucleate) vitellarium is attached with it.
8. Some roundworms have head shields tbr protection.
9. The proximal end of oviduct is swollen to form a receptacle.
10. Rhabditiform larva molts and becomes the infective filariform larva.
11.Two species of human filarial worms are W. bancrofii and W. malayi.
12. The adult filarial nematodes copulate in the lymphatic vessels. They produce larva called microfilarie.
13. A filarial worm Dirofilaria immitis is common in Pakistan.
14. Nematomorphs are commonly called horsehair worms or Gordian worms.
Ans
1. True 2. False (cutely) 3. F. (protonephridia) 4. True 5. True 6. trophi 7. True 8. True 9. F. (seminal) 10. True 11. True 12. True 13. United States 14. True
Similar Articles:
- SUBJECTIVE QUESTIONS
- DEFINITIONS & KEY POINTS FOR OBJECTIVES
- PHYLUM ROTIFERA (rota, wheel+fera, to bear)
- FURTHER PHYLOGENETIC CONSIDERATIONS
- GENERAL CHARACTERISTICS OF ASCHELIMINTHES
