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

Subtopic:  Phylum Chordata |
 67%
From NCERT
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In which of the following haemocyanin pigment is found?

1. Lower invertebrates

2. Echinodermata

3. Insecta

4. Annelida

Subtopic:  Phylum Annelida |
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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

Subtopic:  Phylum Annelida |
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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

Subtopic:  Phylum Hemichordata | Phylum Chordata | Comparative study of Cartilagenous & Bony Fishes |
 86%
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Chondrichthyes is characterised by:

1. placoid scale

2. placoid scale and ventral mouth

3. Ventral mouth

4. ctenoid scale and ventral

Subtopic:  Comparative study of Cartilagenous & Bony Fishes |
 84%
From NCERT
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Ichthyology is the study of:

1. aves

2. Amphibians

3. Reptiles

4. Fishes

Subtopic:  Super Class Pisces & its General Characteristics |
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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

Subtopic:  Phylum Porifera |
 82%
From NCERT
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The minute pores in the  body wall of the sponges is known as

1.spongocoel

2.Ostia

3.Osculum

4.Spicules

Subtopic:  Phylum Porifera |
 83%
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Water canal is lined by

1. Spongin fibres

2. Choanocytes

3. Collar cells

4. Both 2 and 3

Subtopic:  Phylum Porifera |
 81%
From NCERT
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Canal system in sponges helps in

1. Food gathering

2. Respiratory exchange

3. Removal of waste

4. All of the above

Subtopic:  Phylum Porifera |
 95%
From NCERT
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