Match the following diseases with the causative organism and select the correct option.
Column-I | Column-II | ||
(a) | Gregarious, polyphagous pest | (i) | Asterias |
(b) | Adult with radial symmetry and larva with bilateral symmetry | (ii) | Scorpion |
(c) | Book lungs | (iii) | Ctenoplana |
(d) | Bioluminescence | (iv) | Locusta |
(a) | (b) | (c) | (d) | |
1. | (iv) | (i) | (ii) | (iii) |
2. | (iii) | (ii) | (i) | (iv) |
3. | (ii) | (i) | (iii) | (iv) |
4. | (i) | (iii) | (ii) | (iv) |
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In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct?
Genus Name | Two Characters | Phylum | ||
1. | Pila | (i) (ii) |
Body segmented Mouth with Radula |
Mollusca |
2. | Asterias | (i) (ii) |
Spiny skinned Water Vascular System |
Echinodermata |
3. | Sycon | (i) (ii) |
Pore bearing Canal system |
Porifera |
4. | Periplaneta | (i) (ii) |
Jointed appendages Chitinous exoskeleton |
Arthropoda |
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Which one of the following is a matching set of a phylum and its three examples?
1. Cnidaria- Bonellia, Physalia, Aurelia
2. Platyhelminthes- Planaria, Schistosoma, Enterobius
3. Mollusca- Loligo, Teredo, Octopus
4. Porifera- Spongilla, Euplectella, Pennatula
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Consider following features:
A: Organ system level of organisation
B: Bilateral symmetry
C: True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics.
1. Annelida, Mollusca and Chordata
2. Annelida, Arthropoda and Chordata
3. Annelida, Arthropoda and Mollusca
4. Arthropoda, Mollusca and Chordata
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Choose the correct statement.
1. All mammals are viviparous
2. All cyclostomes do not possess jaws and paired fins
3. All reptiles have a three-chambered heart
4. All pisces have gills covered by an operculum
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Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct ?
1. It is present throughout life in Amphioxus
2. It is present only in larval tail in Ascidians
3. It is replaced by vertebral column in adult frog
4. It is absent throughout life in humans from the very beginning
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A jawless fish, which lays eggs in freshwater and whose ammocoetes larvae after metamorphosis return to the ocean is
1. | Eptratretus | 2. | Myxine |
3. | Neomyxine | 4. | Petromyzon |
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Which of the following represents the correct combination without any exception?
Characteristic | Class | |
1. | Mammary gland; hair on body; pinnae; two pairs of limbs | Mammalia |
2. | Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord | Chondrichthyes |
3. | Sucking and circular mouth; jaws absent; integument without scales; paired appendages | Cyclostomata |
4. | Body covered with feathers; skin moist and glandular; lungs with air sacs; fore limbs from wings | Aves |
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1. | Scoliodon | 2. | Hippocampus |
3. | Chelone | 4. | Pteropus |
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1. | Metamerism appeared for the first time in annelida |
2. | Arthropods have jointed appendages and chitinous exoskeleton |
3. | Reptiles are endotherms |
4. | Forelimbs of birds are modifies into wings |