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
In which of the following haemocyanin pigment is found?
1. Lower invertebrates
2. Echinodermata
3. Insecta
4. Annelida
Which of the following cells in earthworms play a role similar to the liver in vertebrates?
1. Amoebocytes
2. Mucocytes
3. Chloragogen cells
4. epidermal cells
Match the following and select the correct option.
1. A-3 B-5 C-2 D-1 E-4
2. A-3 B-1 C-5 D-2 E-4
3. A-1 B-2 C-3 D-4 E-5
4. A-2 B-3 C-4 D-1 E-5
Chondrichthyes is characterised by:
1. placoid scale
2. placoid scale and ventral mouth
3. Ventral mouth
4. ctenoid scale and ventral
Ichthyology is the study of:
1. aves
2. Amphibians
3. Reptiles
4. Fishes
Which of the following is not true about Porifera
1.Cellular level of organisation
2.Radial symmetry
3.Tissue is absent
4.Canal system is present
The minute pores in the body wall of the sponges is known as
1.spongocoel
2.Ostia
3.Osculum
4.Spicules
Water canal is lined by
1. Spongin fibres
2. Choanocytes
3. Collar cells
4. Both 2 and 3
Canal system in sponges helps in
1. Food gathering
2. Respiratory exchange
3. Removal of waste
4. All of the above