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Q. No.Identify the correct statements regarding arthropods:
I:
They are bilaterally symmetrical, triploblastic, non-segmented and pseudocoelomate animals.
II:
Arthropoda is the largest phylum of Animalia and includes more than 90 % of all species on the earth that are named so far.
III:
Insects are arthropods with body consisting of head, thorax and abdomen.
1.
Only I
2.
Only I and II
3.
Only III
4.
Only II and III
Subtopic: Phylum Arthropoda |
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:
Codes:
| Column I | Column II | ||
| A. | Insect reared for producing silk | P. | Locusta |
| B. | Mosquito acting as vector for Dengue virus | Q. | Bombyx |
| C. | Gregarious pest | R. | Limulus |
| D. | Living fossil | S. | Aedes |
Codes:
| A | B | C | D | |
| 1. | Q | S | P | R |
| 2. | Q | S | R | P |
| 3. | P | Q | R | S |
| 4. | R | P | Q | S |
Subtopic: Phylum Arthropoda |
90%
From NCERT
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Identify the incorrect statement regarding Mollusca:
| 1. | It is the second largest animal Phylum after Phylum Arthropoda. |
| 2. | It includes animals that are bilaterally symmetrical, triploblastic, and coelomate. |
| 3. | Body is covered with a calcareous shell and is metamerically segmented with a distinct head, muscular foot, and visceral hump. |
| 4. | Gills are present in the mantle cavity, a space between the mantle and the hump. |
Subtopic: Phylum Mollusca |
75%
From NCERT
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Identify the incorrectly matched pair:
| 1. | Pinctada | Pearl Oyster |
| 2. | Aplysia | Sea hare |
| 3. | Dentalium | Tusk shell |
| 4. | Loligo | Devil fish |
Subtopic: Phylum Mollusca |
85%
From NCERT
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Which of the following will be correct regarding Echinoderms?
| 1. | They have bilateral symmetry as adults and radial symmetry as larvae. |
| 2. | They are triploblastic and coelomates. |
| 3. | They possess a well-developed excretory system. |
| 4. | They have an incomplete digestive system. |
Subtopic: Phylum Echinodermata |
82%
From NCERT
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In hemichordates:
| 1. | Circulatory system is a closed type |
| 2. | Proboscis gland is a digestive gland that secretes a large number of hydrolytic enzymes |
| 3. | Respiration takes place through the gills |
| 4. | Sexes are not separate, fertilization is internal and development is direct |
Subtopic: Phylum Hemichordata |
65%
From NCERT
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Which of the following features will be seen in chordates but not in non-chordates?
| a. | A notochord |
| b. | Ventral, solid, and double central nervous system |
| c. | Pharynx perforated by gill slits |
| d. | Ventral heart |
| e. | Terminal anus and a lack of post-anal tail |
| 1. | a, c, and d only | 2. | a, b. and e only |
| 3. | a and c only | 4. | b, c, and d only |
Subtopic: Phylum Chordata |
81%
From NCERT
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Consider the given statements:
Which of the given statements is/ are true?
1. Only Statement I and Statement II
2. Only Statement I and Statement III
3. Only Statement II and Statement III
4. Statement I, Statement II, and Statement III
| Statement I: | In Urochordata, notochord is present only in larval tail. |
| Statement II: | In Cephalochordata, notochord extends from head to tail region and is persistent throughout their life. |
| Statement III: | Both Urochordates and Cephalochordates are exclusively marine. |
1. Only Statement I and Statement II
2. Only Statement I and Statement III
3. Only Statement II and Statement III
4. Statement I, Statement II, and Statement III
Subtopic: Phylum Chordata |
81%
From NCERT
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Consider the two statements:
| Statement I: | All vertebrates are chordates but all chordates are not vertebrates. |
| Statement II: | Besides the basic chordate features, all vertebrates have at least a three-chambered heart and paired appendages. |
| 1. | Both Statement I and Statement II are correct but Statement II does not explain Statement I. |
| 2. | Statement I is correct and Statement II is incorrect. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Both Statement I and Statement II are correct and Statement II explains Statement I. |
Subtopic: Phylum Chordata |
74%
From NCERT
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The given flow chart shows the classification scheme of sub-phylum Vertebrata. Identify A, B, C and D.
| A | B | C | D | |
| 1. | Phylum | Cephalochordata | Urochordata | Protochordata |
| 2. | Division | Agnatha | Super-Class | Pisces |
| 3. | Phylum | Protochordata | Infra-class | Jawless fishes |
| 4. | Division | Agnatha | Sub-division | Pisces |
Subtopic: Phylum Chordata |
81%
From NCERT
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