- 1(current)
Q. No.Which one of the following pairs of animal comprises ‘jawless fishes’?
(1) Lampreys and eels
(2) Mackerels and rohu
(3) Lampreys and hag fishes
(4) Guppies and hag fishes
Which of the following does not come under the Class Mammals?
(1) Flying fox
(2) Hedgehog
(3) Manatee
(4) Lamprey
Match the following columns and select the correct option :
| Column I | Column II | ||
| (a) | Aptenodytes | (i) | Flying fox |
| (b) | Pteropus | (ii) | Angel fish |
| (c) | Pterophyllum | (iii) | Lamprey |
| (d) | Petromyzon | (iv) | Penguin |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (ii) | (i) | (iv) | (iii) |
Which of the following statement is incorrect with respect to vertebrates?
1. Vertebrates possess notochord during the embryonic period
2. Notochord is replaced by a cartilaginous or bony vertebral column in the adult
3. All vertebrates are chordates but all chordates are not vertebrates
4. Vertebrates have a dorsal muscular heart with two, three, or four chambers
Match each item in Column I with one item in Column II and chose your answer from the codes given below.
|
Column I |
Column II |
|
I. Placoid Scales II. Ctenoid scales III. Ectoparasites IV. Proboscis gland |
1. Chondrichthyes 2. Osteichthyes 3. Hemichordata 4. Cyclostomata |
Codes:
| I | II | III | IV | |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 2 | 1 | 4 | 3 |
| 3. | 2 | 1 | 3 | 4 |
| 4. | 1 | 2 | 4 | 3 |
Choose the correct statements.
| 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 |
Select the correct option in respect of characteristics
of each group :-
|
Cyclostomes |
Chondrichthyes |
Osteichthyes |
|
|
(i) |
Marine |
Marine, Fresh water |
Marine |
|
(ii) |
Sucking mouth |
Ventral mouth |
Terminal mouth |
|
(iii) |
6-15 Pairs of Gills |
5-7 Pairs of Gills |
4 Pairs of Gills |
|
(iv) |
Placoid scales |
Cycloid Scales |
Ctenoid/ Ganoid |
| 1. | (i), (ii) are correct. |
| 2. | (i), (iii), (iv) are correct. |
| 3. | (ii), (iii) are correct. |
| 4. | (ii), (iii), (iv) are correct. |
A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is
(1) Eptatretus
(2) Exocoetus
(3) Neomyxine
(4) Petromyzon
- 1(current)
Q. No.
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