The terms for ‘summer sleep’ and ‘winter sleep’ seen in frogs respectively are:
1. | Aestivation and Hibernation |
2. | Hibernation and Aestivation |
3. | Diapause and Cryptobiosis |
4. | Cryptobiosis and Diapause |
I: | Phylum | Chordata |
II: | Subphylum | Vertebrata |
III: | Superclass | Gnathostomata |
IV: | Class | Tetrapoda |
1. | I and II only | 2. | III and IV only |
3. | I and III only | 4. | II and IV only |
Consider the given two statements:
Assertion (A): | Frogs have the capability to change the colour and resemble their surroundings. |
Reason (R): | They are poikilothermous animals. |
1. | (A) is True but (R) is False |
2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
3. | Both (A) and (R) are True and (R) correctly explains (A) |
4. | (A) is False but (R) is True |
1. | Rana temporaria | 2. | Rana tigrina |
3. | Bufo bufo | 4. | Bufo melanostictus |
1. | they are an important source of food all over the world. |
2. | toxins derived from them can cure many human ailments. |
3. | while burrowing, they loosen soil in arid environments making the soil highly fertile. |
4. | they eat insects and protect the crop. |