Biology MCQ Set 8

Question : Nervous system comprising of a nerve ring around the pharynx, which give rise to dorsal, ventral and later nerve cord running throughout the length of the worms, is characteristics of

1. Platyhelminthes
2. Nematoda
3. Annelida
4. Coelentrata

Question : A minute round worm commonly found in the intestine of children is

1. Ascaris
2. Trichinella
3. Dracunculus
4. Filaria

Question : Which of the following causes abscesses on the skin of arms or legs?

1. Ascaris
2. Trichinella
3. Dracunculus
4. Filaria

Question : An organism appears to be a segmented worm, has a closed circulation, a mouth and an anus, and does not have an exoskeleton. The organisms most likely belongs to phylum

1. Mollusca
2. Annelida
3. Echinodermata
4. Chordata

Question : In annelids the convoluted tubes present in each segment and serve as excretory organs are

1. Flame cells
2. Malpighian tubules
3. Nephridia
4. None of these

Question : Many annelids possess sacs in body wall that contain bristles called

1. Setae
2. Cheate
3. Nematocysts
4. None of these