- 1(current)
Q. No.In which of the following sets of organisms, does the external fertilization occur?
1. Echinodermata and mosses
2. Hemichordata and ferns
3. Amphibians and algae
4. Reptiles and gymnosperms
In which one of the following, the genus name, its two characters and its class/phylum are correctly matched?
| Genus Name | Two characters | Class/Phylum | ||
| 1. | Salamandra | (i) | A tympanum represents ear | Amphibia |
| (ii) | Fertilization is external | |||
| 2. | Pteropus | (i) | Skin possesses hair | Mammalia |
| (ii) | oviparous | |||
| 3. | Aurelia | (i) | Cnidoblasts | Coelenterata |
| (ii) | Organ level of organization | |||
| 4. | Ascaris | (i) | Body segmented | Annelida |
| (ii) | Males and Females distinct |
In Amphibia:
I. Skin is moist without scales
II. A tympanum represents the ear
III. Fertilization is external
1. Only I and II are correct.
2. Only I and III are correct.
3. Only II and III are correct.
4. I, II, and III are correct.
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.
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
- 1(current)
Q. No.
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