- 1(current)
Q. No.Match the following list of animals with their level of organization.
| Division of Labour | Animal | ||
| A. | Organ level | i. | Pheritima |
| B. | Cellular aggregate level | ii. | Fasciola |
| C. | Tissue level | iii. | Spongilla |
| D. | Organ system level | iv. | Obelia |
Choose the correct match showing division of labour with animal example:
| i | ii | iii | iv | |
| 1. | B | C | D | A |
| 2. | B | D | C | A |
| 3. | D | A | B | C |
| 4. | A | D | C | B |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |Â Phylum Ctenophora & Platyhelminthes |Â Phylum Aschelminthes |Â Phylum Annelida |Â Phylum Arthropoda |Â Phylum Mollusca |Â Phylum Echinodermata |Â Phylum Hemichordata |Â General Introduction: Vertebrates & Agnatha |
 87%
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Match the following group of organisms with their respective distinctive characteristics and select the correct option :
| Organisms | Characteristics | ||
| (a) | Platyhelminthes | (i) | Cylindrical body with no segmentation |
| (b) | Echinoderms | (ii) | Warm blooded animals with direct development |
| (c) | Hemichordates | (iii) | Bilateral symmetry with incomplete digestive system |
| (d) | Aves | (iv) | Radial symmetry with indirect development |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (i) | (ii) | (iii) | (iv) |
Subtopic: Â Phylum Ctenophora & Platyhelminthes |Â Phylum Echinodermata |Â Phylum Hemichordata |Â Study of Aves & Mammals |
 85%
From NCERT
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Please attempt this question first.
Identify the incorrect statement regarding echinoderms:
| 1. | Echinoderms evolved from animals with bilateral symmetry. |
| 2. | Echinoderms have a mesodermal skeleton composed of calcareous plates or ossicles. |
| 3. | Most echinoderms are not able to reproduce asexually and regenerate tissues, organs, and limbs. |
| 4. | Echinoderms are also the largest phylum that has no freshwater or terrestrial (land-based) representatives. |
Subtopic: Â Phylum Echinodermata |
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The second largest group of dueterostomes are:
| 1. | Echinoderms | 2. | Hemichordates |
| 3. | Chordates | 4. | Arthropods |
Subtopic: Â Phylum Echinodermata |
 52%
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- 1(current)
Q. No.
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