Which of the following act(s) as a respiratory organ in a frog on land?
1. Skin
2. Buccal cavity
3. Lungs
4. All of the above
Bull frog of India is
1. Rana tigerina
2. Rana sylvatica
3. Rana ecutedbeiana
4. Rana esculenta
In frogs:
| 1. | The dentition is homodont and the upper jaw is toothless. |
| 2. | The dentition is heterodont and the upper jaw is toothless. |
| 3. | The dentition is homodont and the lower jaw is toothless. |
| 4. | The dentition is heterodont and the lower jaw is toothless. |
Choose the correct statement for the digestive system of frog :
| 1. | Oesophagus is very long |
| 2. | Food is captured by the bilobed tongue |
| 3. | The intestine is divisible into two parts only i.e. duodenum and rectum |
| 4. | Both (2) and (3) |
Which of the following is not seen in the brain of the frog?
| 1. | Olfactory lobes | 2. | Corpus callosum |
| 3. | Corpora striata | 4. | Anterior choroid plexus |
Tadpoles will undergo metamorphosis if they are:
(1) fed on frog eggs
(2) provided with high temperature
(3) injected thyroxine
(4) injected gonadotropic hormones
The pituitary gland is crushed and injected in a frog. The frog will:
| 1. | start laying eggs almost immediately |
| 2. | change color |
| 3. | undergo metamorphosis |
| 4. | die |
Cuboidal epithelium with brush border of microvilli is found in :
1. Ducts of salivary glands
2. Proximal convoluted tubule of nephron
3. Eustachian tube
4. Lining of intestine
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