Food storage in Leucosolenia occur by:
1. ostia
2. osculum
3. thesocytes
4. spongocoel
The structure present in all adult vertebrates is:
1. Notochord
2. Dorsal tubular nerve cord
3. Pharyngeal gill slits
4. All of the above
Which one of the following is not a vertebrate?
1. Sea cow
2. Sea lion
3. Sea horse
4. Sea hare
The canal system is a characteristic feature of:
1. echinoderms
2. helminths
3. coelenterates
4. sponges
Chondrichthyes is characterised by:
1. placoid scale
2. ventral mouth
3. ctenoid scale and ventral mouth
4. placoid scale and ventral mouth
Secondary body cavity with segmented mesodermal lining is called:
1. haemocoel
2. neurocoele
3. true coelom
4. pseudocoelom
One animal that does not perform locomotion is:
1. Sycon
2. Nereis
3. Sepia
4. Euglena
The scientific name of gharial is:
1. Naja bungarus
2. Gaviais gangeticus
3. Hemidactylus flavivridis
4. None of the above
Which of the given option is correct regarding the statements?
Statement I: | Cephalochordata bears notochord all along the body throughout life. |
Statements II: | Urochordate bears vertebral column only in tail region throughout the life. |
1. I wrong, II correct
2. I correct, II wrong
3. Both I and II are wrong
4. Both are correct