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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 |
82%
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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 |
80%
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Identify the correct statements:
I: Body is segmented in both Annelida and Chordata.
II: Blood vascular system is closed in both Annelida and Arthropoda.
III: Adults exhibit radial symmetry in both Annelida and Echinodermata.
IV: Triploblastic organization is seen in both Annelida and Platyhelminthes.
1. I and II only
2. II and III only
3. I and IV only
4. III and IV only
I: Body is segmented in both Annelida and Chordata.
II: Blood vascular system is closed in both Annelida and Arthropoda.
III: Adults exhibit radial symmetry in both Annelida and Echinodermata.
IV: Triploblastic organization is seen in both Annelida and Platyhelminthes.
1. I and II only
2. II and III only
3. I and IV only
4. III and IV only
Subtopic: Phylum Ctenophora & Platyhelminthes | Phylum Annelida | Phylum Arthropoda | Phylum Echinodermata | Phylum Chordata |
77%
From NCERT
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Complete alimentary canal, an excretory tube and a pseudocoelom will be seen in animals belonging to the phylum:
| 1. | Cnidaria | 2. | Aschelminthes |
| 3. | Hemichordata | 4. | Echinodermata |
Subtopic: Phylum Aschelminthes |
94%
From NCERT
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The given diagram shows a hypothetical chordate showing derived shared traits. There are some mistakes in the labelling of the features. Which features are correctly identified?
1. Only the Gill slits
2. Only Gill slits and Terminal anus
3. Only Notochord and Nerve cord
4. All labels are correct
1. Only the Gill slits
2. Only Gill slits and Terminal anus
3. Only Notochord and Nerve cord
4. All labels are correct
Subtopic: Phylum Chordata |
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Consider the given two statements :
Assertion: Hooks and suckers are present in the endoparasitic flat worms.
Reason: These structures help such worms to attach to the intestine of the host.
1. Both Assertion and Reason are true and Reason correctly explains the Assertion.
2. Both Assertion and Reason are true but the Reason does not correctly explain the Assertion.
3. Assertion is true but the Reason is false.
4. Both Assertion and Reason are false.
Assertion: Hooks and suckers are present in the endoparasitic flat worms.
Reason: These structures help such worms to attach to the intestine of the host.
1. Both Assertion and Reason are true and Reason correctly explains the Assertion.
2. Both Assertion and Reason are true but the Reason does not correctly explain the Assertion.
3. Assertion is true but the Reason is false.
4. Both Assertion and Reason are false.
Subtopic: Phylum Ctenophora & Platyhelminthes |
82%
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The given diagram shows:
1. Radial symmetry as seen in Cnidaria.
2. Biradial symmetry as seen in Ctenophora.
3. Bilateral symmetry as seen in Molluska.
4. Icosahedra symmetry as seen in certain viruses.
1. Radial symmetry as seen in Cnidaria.
2. Biradial symmetry as seen in Ctenophora.
3. Bilateral symmetry as seen in Molluska.
4. Icosahedra symmetry as seen in certain viruses.
Subtopic: Phylum Ctenophora & Platyhelminthes |
60%
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Match column-I with column-II and select the correct option.
Column-I Column-II
a. Corvus (i) Single circulation
b. Aedes (ii) Open circulation
c. Calotes (iii) Double circulation
d. Scoliodon (iv) Incomplete double circulation
1. a(ii), b(iii), c(iv), d(i)
2. a(iii), b(i), c(iv), d(ii)
3. a(iii), b(ii), c(iv), d(i)
4. a(iii), b(ii), c(i), d(iv)
Column-I Column-II
a. Corvus (i) Single circulation
b. Aedes (ii) Open circulation
c. Calotes (iii) Double circulation
d. Scoliodon (iv) Incomplete double circulation
1. a(ii), b(iii), c(iv), d(i)
2. a(iii), b(i), c(iv), d(ii)
3. a(iii), b(ii), c(iv), d(i)
4. a(iii), b(ii), c(i), d(iv)
Subtopic: Circulatory Pathways |
72%
From NCERT
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Select the correct match from the following given options.
Animal Level of Organisation
1. Taenia – Tissue level
2. Pheretima – Organ system level
3. Sycon – Acellular level
4. Obelia – Organ level
Animal Level of Organisation
1. Taenia – Tissue level
2. Pheretima – Organ system level
3. Sycon – Acellular level
4. Obelia – Organ level
Subtopic: Phylum Porifera | Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes | Phylum Annelida | Basis of Classification |
61%
From NCERT
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Choose the option which fills the blank correctly to complete the analogy.
Sea pen : Radial symmetry :: Liver fluke:______
1. Asymmetry
2. Radial symmetry
3. Biradial symmetry
4. Bilateral symmetry
Sea pen : Radial symmetry :: Liver fluke:______
1. Asymmetry
2. Radial symmetry
3. Biradial symmetry
4. Bilateral symmetry
Subtopic: Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes |
85%
From NCERT
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