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Q. No.The figure shows the mouth of a chordate. It can easily be seen that:
I. The mouth is circular
II. Jaw is absent.
This chordate can be:
1. Ascidia
2. Amphioxus
3. Petromyzon
4. Exocoetus
Subtopic: Phylum Chordata |
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Spongilla | P. | Sea-fan |
| B. | Euspongia | Q. | Brain coral |
| C. | Gorgonia | R. | Fresh Water sponge |
| D. | Meandrina | S. | Sea-pen |
| E. | Pennatula | T. | Bath sponge |
| A | B | C | D | E | |
| 1. | T | R | P | Q | S |
| 2. | R | T | P | Q | S |
| 3. | T | R | Q | S | P |
| 4. | R | T | S | P | Q |
Subtopic: Phylum Porifera | Phylum Coelenterata |
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The organism shown in the given figure is representative of the subphylum Cephalochordata. This organism is:
| 1. Ascidia | 2. Amphioxus |
| 3. Petromyzon | 4. Exocoetus |
Subtopic: Phylum Chordata |
72%
Level 2: 60%+
Given below is a diagram showing the water vascular system of an Echinoderm.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | It is a hydraulic system used by echinoderms for locomotion, food and waste transportation, and respiration. |
| II: | The system is composed of canals connecting numerous tube feet. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Phylum Echinodermata |
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Level 1: 80%+
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In the given diagram of the body plan of an insect, identify the parts A-F:
| A | B | C | D | E | F | |
| 1. | Blood vessel | Nerve cord | Trachea | Spiracles | Crop | Hearts |
| 2. | Blood vessel | Nerve cord | Trachea | Spiracles | Oesophagus | Hearts |
| 3. | Nerve cord | Blood vessel | Trachea | Spiracles | Crop | Ostia |
| 4. | Nerve cord | Blood vessel | Stomo- chord |
Ostia | Oesophagus | Spiracles |
Subtopic: Phylum Arthropoda |
62%
Level 2: 60%+
Given below is the body plan of a hypothetical generalized mollusc. Consider the given two statements.
| A: | I is found in all the molluscs. |
| B: | II is a cavity used for egestion, excretion and respiration. |
| 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 Mollusca |
Level 3: 35%-60%
Given below is a figure showing the worms which are the most common cause of helminthic infestation in the world.
1. A is male Ascaris and B is female Ascaris
2. A is female Ascaris and B is male Ascaris
3. A is male Wuchereria and B is female Wuchereria
4. A is female Wuchereria and B is male Wuchereria
1. A is male Ascaris and B is female Ascaris
2. A is female Ascaris and B is male Ascaris
3. A is male Wuchereria and B is female Wuchereria
4. A is female Wuchereria and B is male Wuchereria
Subtopic: Phylum Aschelminthes |
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The diagram shows an organism with the following features:
I. Presence of comb plates on the surface.
II. Bioluminescence
This animal can be:
I. Presence of comb plates on the surface.
II. Bioluminescence
This animal can be:
| 1. A sponge | 2. A Cnidarian |
| 3. A Ctenophore | 4. A flatworm |
Subtopic: Phylum Ctenophora |
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The following structure is most likely:
| 1. | An attachment organ at the anterior end of tapeworms. |
| 2. | Sensory apparatus at the anterior end of nematodes. |
| 3. | The multiple compound eyes seen in aquatic helminths. |
| 4. | Food storage organ in parasitic platyhelminths. |
Subtopic: Phylum Platyhelminthes |
73%
Level 2: 60%+
Consider the given two statements regarding the water flow through the bodies of sponges as shown in the diagram.
| I: | Most sponges work rather like chimneys: they take in water at the bottom and eject it from the osculum ("little mouth") at the top. |
| II: | The inner surface is covered with choanocytes where the wave-like motion of the whip-like flagella drives water through the sponge's body. |
| 1. | I is correct and II is incorrect. |
| 2. | I is incorrect and II is correct. |
| 3. | I is correct and II is also correct. |
| 4. | I is incorrect and II is also incorrect. |
Subtopic: Phylum Porifera |
73%
Level 2: 60%+
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