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Q. No.The organism in the given figure shows pentaradial symmetry [5 body parts]. What else must be present in this organism?
1.
A rasping tongue like organ in alimentary canal
2.
Finger like osmoregulatory and excretory structures at the junction of midgut and hindgut
3.
A water vascular system with tube feet
4.
A large number of cilia used for locomotion
Subtopic: Phylum Echinodermata |
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How many of the given statements regarding birds are correct?
| I: | They have feathers and most of them can fly. |
| II: | They possess beak. |
| III: | They have scales on the forelimbs and hindlimbs are modified into wings. |
| IV: | They have dry skin without glands except the oil gland at the base of the tail. |
| V: | They possess a fully ossified (bony) endoskeleton. |
| VI: | They have long bones that are solid without air cavities (pneumatic). |
| 1. | 3 | 2. | 4 |
| 3. | 5 | 4. | 6 |
Subtopic: Study of Aves & Mammals |
60%
From NCERT
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In amphibians:
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: | Alimentary canal and reproductive tracts open into a common chamber called cloaca which opens to the exterior but the urinary system has a separate opening to the exterior. |
| II: | Respiration is by gills, lungs and through skin. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Study of Amphibians |
77%
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Identify the correct statement regarding classification of chordates:
| 1. | Vertebrata is a subphylum; Agnatha is a division and Pisces is a super-class |
| 2. | Vertebrata is a supraphylum; Agnatha is a phylum and Pisces is a super-class |
| 3. | Vertebrata is a subphylum; Agnatha is a division and Pisces is a class |
| 4. | Vertebrata is a subphylum; Agnatha is a super-class and Pisces is a class |
Subtopic: Phylum Chordata |
66%
From NCERT
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Statocysts, present in some animals, help directly in:
1. Locomotion
2. Respiration
3. Feeding
4. Balancing
1. Locomotion
2. Respiration
3. Feeding
4. Balancing
Subtopic: Phylum Arthropoda |
91%
From NCERT
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Neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord in:
1. Hydra
2. Cephalochordates
3. Amphibians
4. Annelids
1. Hydra
2. Cephalochordates
3. Amphibians
4. Annelids
Subtopic: Phylum Annelida |
78%
From NCERT
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Planaria, an organism that possesses high regeneration capacity, belongs to:
1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Echinodermata
1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Echinodermata
Subtopic: Phylum Ctenophora & Platyhelminthes |
94%
From NCERT
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The correct statements regarding Platyhelminthes will be:
a. All living members of the phylum are parasites.
b. They lack a true coelom but have a pseudo coelom.
c. Body is dorso-ventrally flattened.
d. They exhibit bilateral symmetry.
1. Only [a] and [b]
2. Only [b] and [c]
3. Only [a] and [d]
4. Only [c] and [d]
a. All living members of the phylum are parasites.
b. They lack a true coelom but have a pseudo coelom.
c. Body is dorso-ventrally flattened.
d. They exhibit bilateral symmetry.
1. Only [a] and [b]
2. Only [b] and [c]
3. Only [a] and [d]
4. Only [c] and [d]
Subtopic: Phylum Ctenophora & Platyhelminthes |
87%
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Regarding mammals:
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
| I: | The most unique characteristic is the presence of mammary glands. |
| II: | Skin is unique in possessing hair. |
| III: | Heart is unique in being four-chambered. |
| IV: | Viviparity is a unique feature. |
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
Subtopic: Study of Aves & Mammals |
88%
From NCERT
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Sponges:
1. Only I and II are correct
2. Only II and III are correct
3. Only III and IV are correct
4. Only I and IV are correct
| I: | are exclusively marine and mostly asymmetrical animals. |
| II: | have cellular level of organisation. |
| III: | have a water transport or canal system. |
| IV: | have extracellular digestion. |
2. Only II and III are correct
3. Only III and IV are correct
4. Only I and IV are correct
Subtopic: Phylum Porifera |
84%
From NCERT
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