Consider the following characters:
I. Air bladder
II. Operculum
III. Viviparity
The characters present in bony fishes include:
1. | I, II and III | 2. | I and III only |
3. | I and II only | 4. | II and III only |
Consider the following features:
I. Ampulla of Lorenzini
II. Operculum or gill cover
III. Ureotelism
IV. Viviparity
V. Swim bladder
VI. Lateral line system
The features that can be attributed to cartilaginous fishes are:
1. I, III and IV only
2. II, V and VI only
3. I, II, III and IV
4. All
Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I Feature |
Column II Phylum |
(a) Lateral line system (b) Water vascular system (c) Radula (d) Comb plates (e) Parapodia |
(i) Ctenophora (ii) Mollusca (iii) Echinodermata (iv) Osteichthyes (v) Annelida |
Codes
(a) (b) (c) (d) (e)
1. (i) (ii) (iii) (iv) (v)
2. (iv) (iii) (ii) (i) (v)
3. (iv) (iii) (i) (v) (ii)
4. (iii) (ii) (i) (v) (iv)
Operculum and an air bladder are present in :
1. Clarias
2. Pristis
3. Trygon
4. Carcohrodon
Which of the following characteristic features always holds true for the corresponding group of animals?
1. | Viviparous | Mammalia |
2. | Possess a mouth with an upper and a lower jaw | Chordata |
3. | 3-chambered heart with one incompletely divided ventricle | Reptilia |
4. | Cartilaginous – endoskeleton | Chondrichthyes |
A marine cartilaginous fish that can produce electric current is
(1) Pristis
(2) Torpedo
(3) Trygon
(4) Scoliodon
What will you look to identify the sex of the following?
1. | Male frog – a copulatory pad on the first digit of the hind limb |
2. | Female cockroach – anal cerci |
3. | Male shark – claspers bone on pelvic fins |
4. | Female Ascaris – sharply curved posterior end |
Which of the following represent 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 coverd with feathers; skin moist and glandular; lungs with air sacs; fore limbs form wings |
Aves |
Which of the following is a fish?
(1) Flying fish
(2) Jelly fish
(3) Devil fish
(4) Star fish
Buoyancy in a bony fish is maintained with the help of
(1) streamlined body
(2) paired fins
(3) swim bladder
(4) all the above