Identify the incorrectly matched pair:
| Animals | Feature present in both | |
| 1. | Balanoglossus and Pinctada | Open circulatory system |
| 2. | Branchiostoma and Ascidia | Persistent notochord |
| 3. | Aplysia and Pheretima | True coelom |
| 4. | Gorgonia and Pennatula | Cnidoblasts |
Pteropus is a/an:
| 1. | Limbless amphibian |
| 2. | Extinct reptile that evolved into mammals |
| 3. | Bony fish that migrates from sea water to fresh water for breeding |
| 4. | Mammal with flight |
Which of the following is not an arthropod characteristic?
1. Jointed appendages
2. Non-segmented bodies
3. Periodic moulting
4. Articulated exoskeleton
An animal with the following body wall organization will not have:
1. Cephalization
2. Three germ layers
3. Bilateral symmetry
4. A complete digestive tract
Which of the following represents order of 'Horse'?
(1) Equidae
(2) Perissodactyla
(3) Caballus
(4) Ferus
An important characteristic that hemichordates share with chordates is
(1) absence of notochord
(2) ventral tubular nerve cord
(3) pharynx with gill slits
(4) pharynx without gill slits
Which among these is the correct combination of aquatic mammals?
(1) Seals, Dolphins, Sharks
(2) Dolphins, Seals, Trygon
(3) Whales, Dolphins, Seals
(4) Trygon, Whales, Seals
In case of poriferans, the spongocoel is lined with flagellated cells called
1. ostia
2. oscula
3. choanocytes
4. mesenchymal cells
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