A. Excretory system
B. Digestive system
C. Criculatory system
D. Nervous system
Related Mcqs:
- __________ are believed to have common origin with annelids.
A. Nematods
B. Arthropods
C. Molluscs
D. None of these - The organs of locomotion in annelids are__________?
A. Muscles
B. Hydrostatic skeleton
C. Parapodia
D. Setae - In an annelids, the contraction of circular muscle results in___________?
A. Lengthening of the body.
B. Shortening of the body.
C. Widening of body
D. Thinning of body - On which of the following component of chloroplast chlorophyll is arranged?
A. Cell membrane
B. Matrix
C. Thylakoids
D. Stroma - Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili_____________?
A. Psilopsida
B. Lycopsida
C. Sphenopsida
D. Prteropsida - In which of the following joint muscles are arranged in the same plane as that of joint?
A. Between radius and ulna.
B. Between ulna and scapula
C. Between humerus and scapula
D. Between femur and tibia. - Which of the following is a sentimentally arranged excretory system?
A. Protonephridium
B. Metanephridium
C. Malpighian tubules
D. Nephrons - An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called?
A. Biome
B. Phyletic lineage
C. Community
D. Population - Unbroken series of organisms arranged from ancestor to descendant sequence is____________?
A. Biodiversity
B. Phyletic lineage
C. Connecting link
D. Evolutionary line - Which one of the following is most likely to occur in an animal during winter?
A. Activation of sweat glands
B. Dilation of skin blood vessels
C. Panting
D. Thermogenesis
