Q. No.Identify the incorrectly matched pair:
1.
Obelia
Metagenesis
2.
Planaria
Free living with
high regeneration capacity
3.
Ancylostoma
Acoelomate
4.
Nereis
Parapodia
high regeneration capacity
| Column I | Column II | ||
| A. | Porifera | P | Metagenesis |
| B. | Cnidaria | Q | Flame cells |
| C. | Ctenophora | R | Comb Plates |
| D. | Platyhelminthes | S | Choanocyte |
| A | B | C | D | |
| 1. | R | Q | S | P |
| 2. | S | P | R | Q |
| 3. | P | S | Q | R |
| 4. | Q | R | P | S |
| 1. | Echinodermata | Water vascular system |
| 2. | Hemichordata | Stomochord |
| 3. | Cyclostomata | Cartilaginous jaw |
| 4. | Cephalochordata | Notochord persistent throughout life |
| 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 |
| 1. | Scoliodon | 2. | Hippocampus |
| 3. | Chelone | 4. | Pteropus |
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| COLUMN I | COLUMN II | ||
| A. | Petromyzon | P | A jawless vertebrate |
| B. | Icthyophis | Q | A limbless amphibian |
| C. | Struthio | R | A flightless bird |
Codes
| A | B | C | |
| 1. | Q | R | P |
| 2. | Q | P | R |
| 3. | P | Q | R |
| 4. | P | R | Q |
What is the number of animals, amongst the animals given in the box, that have both a four chambered heart and endothermy?
Crocodilus, Aptendoytes, Canis, Calotes, Struthio, Delphinus, Testudo, Icthyophis
| 1. | 3 | 2. | 4 |
| 3. | 5 | 4. | 6 |
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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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 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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