In which one of the following the genus name, its two characters and its class/phylum are correctly matched?
Genus | Two Characters | Class/phylum |
(a) Salman dra | (i) A tympanum represents ear (ii) Fertilisation is external |
Amphibia |
(b) Pteropus | (i) Skin possesses hair (ii) Oviparous |
Mammalia |
(c) Aurelia | (i) Cnidobles (ii) organ level of Organisation |
Coelenterata |
(d) Ascaris | (i) Body segmented (ii) Males and Female distinct |
Annelida |
3. (c)
4. (d)
Given below are two statements:
I: | Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature |
II: | Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature |
Select the most appropriate option:
1. I is correct but II is incorrect.
2. I is incorrect but II is correct.
3. Both I and II are correct.
4. Both I and II are incorrect.
List-I | List-II | ||
A. | Chondrichthyes | I. | Clarias |
B. | Cyclostomata | II. | Carcharodon |
C. | Osteichthyes | III. | Myxine |
D. | Amphibia | IV. | Ichthyophis |
Which one of the following sets of animals share a four chambered heart?
1. Amphibian, Reptiles, Birds
2. Crocodiles, Birds, Mammals
3. Crocodiles, Lizards, Turtles
4. Lizards, Mammals, Birds