How many of the given statements regarding members of Porifera are correct?
I: They are exclusively marine.
II: They have cellular level of organisation.
III: They have a water vascular system with tube feet.
IV: Digestion is intracellular.
V: Fertilisation is external and development is direct.

1. 2
2. 3
3. 4
4. 5

Subtopic:  Phylum Porifera |
 59%
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I Column II
A Branchiostoma P Notochord persisting in adult
B Ascidia Q Notochord present only in larval tail
C Pristis R Cartilaginous endoskeleton
D Catla S Bone endoskeleton
Codes:
A B C D
1. P Q R S
2. P Q S R
3. Q P R S
4. Q P S R
Subtopic:  Phylum Chordata | Comparative study of Cartilagenous & Bony Fishes |
 76%
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Cyclostomes:
I: are marine but migrate for spawning to fresh water.
II: die within a few days of spawning.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Phylum Chordata |
 92%
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A water vascular system is characteristically seen in the members of Phylum:
1. Porifera
2. Echinodermata
3. Ctenophora
4. Mollusca
Subtopic:  Phylum Echinodermata |
 88%
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The cell shown in the given figure defines animals belonging to:

1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Urochordates
Subtopic:  Phylum Coelenterata |
 95%
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I Column II
A Limulus P Gregarious pest
B Locusta Q Living fossil
C Ancylostoma R Filaria worm
D Wuchereria S Hookworm
Codes:
A B C D
1. Q P S R
2. P Q S R
3. P Q R S
4. Q P R S
Subtopic:  Phylum Aschelminthes | Phylum Arthropoda |
 90%
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All the following are correct for amphibians except:
1. Skin is moist and without scales.
2. A tympanum represents the ear.
3. Eyes lack eyelids.
4. Heart is three chambered.
Subtopic:  Study of Amphibians |
 80%
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Over two-thirds of all named species on earth are:
1. Molluscs
2. Arthropods
3. Chordates
4. Sponges
Subtopic:  Phylum Arthropoda |
 95%
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Parapodia are found in:
1. aquatic molluscs, and help in respiration.
2. benthic echinoderms, and help in gathering food.
3. Ctenophores, and help in locomotion.
4. aquatic annelids, and help in swimming.
Subtopic:  Phylum Annelida |
 89%
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The body is unsegmented but with a distinct head, muscular foot and visceral hump in:
1. Hemichordates
2. Urochordates
3. Molluscs
4. Cephalochordates
Subtopic:  Phylum Annelida |
 94%
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