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Q. No.Cyclostomes:
I:
are marine but migrate for spawning to fresh water.
II:
die within a few days of spawning.
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 Chordata |
92%
From NCERT
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A water vascular system is characteristically seen in the members of Phylum:
1. Porifera
2. Echinodermata
3. Ctenophora
4. Mollusca
1. Porifera
2. Echinodermata
3. Ctenophora
4. Mollusca
Subtopic: Phylum Echinodermata |
88%
From NCERT
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The cell shown in the given figure defines animals belonging to:
1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Urochordates
1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Urochordates
Subtopic: Phylum Coelenterata |
95%
From NCERT
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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 | Limulus | P | Gregarious pest |
| B | Locusta | Q | Living fossil |
| C | Ancylostoma | R | Filaria worm |
| D | Wuchereria | S | Hookworm |
| A | B | C | D | |
| 1. | Q | P | S | R |
| 2. | P | Q | S | R |
| 3. | P | Q | R | S |
| 4. | Q | P | R | S |
Subtopic: Phylum Aschelminthes | Phylum Arthropoda |
90%
From NCERT
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All the following are correct for amphibians except:
1. Skin is moist and without scales.
2. A tympanum represents the ear.
3. Eyes lack eyelids.
4. Heart is three chambered.
1. Skin is moist and without scales.
2. A tympanum represents the ear.
3. Eyes lack eyelids.
4. Heart is three chambered.
Subtopic: Study of Amphibians |
80%
From NCERT
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Over two-thirds of all named species on earth are:
1. Molluscs
2. Arthropods
3. Chordates
4. Sponges
1. Molluscs
2. Arthropods
3. Chordates
4. Sponges
Subtopic: Phylum Arthropoda |
95%
From NCERT
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Parapodia are found in:
1. aquatic molluscs, and help in respiration.
2. benthic echinoderms, and help in gathering food.
3. Ctenophores, and help in locomotion.
4. aquatic annelids, and help in swimming.
1. aquatic molluscs, and help in respiration.
2. benthic echinoderms, and help in gathering food.
3. Ctenophores, and help in locomotion.
4. aquatic annelids, and help in swimming.
Subtopic: Phylum Annelida |
89%
From NCERT
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The body is unsegmented but with a distinct head, muscular foot and visceral hump in:
1. Hemichordates
2. Urochordates
3. Molluscs
4. Cephalochordates
1. Hemichordates
2. Urochordates
3. Molluscs
4. Cephalochordates
Subtopic: Phylum Annelida |
94%
From NCERT
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Choanocyte is a collared flagellated cell found in sponges. The collar of this cell is made of:
1. microvilli
2. fibrils
3. tentacles
4. canals
1. microvilli
2. fibrils
3. tentacles
4. canals
Subtopic: Phylum Porifera |
From NCERT
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | An undifferentiated layer, mesoglea, is present in between the ectoderm and the mesoderm in diploblastic organisms. |
| Statement II: | A third germinal layer, endoderm, in between the ectoderm and mesoderm, is present in triploblastic animals. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Basis of Classification |
57%
From NCERT
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