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Digestive System: Frog | Additional Study Material for NEET PDF Download
DIGESTIVE SYSTEM :
Function of digestive system is ingestion of food, digestion & egestion of undigested food.
Digestive system is divided into 2 parts.
(a) Digestive tract or food passage :
In frog, passage of food is through
Mouth → oral cavity → Oesophagus → stomach → intestine → rectum → Cloaca → Cloacal aperture
Tongue : Tongue of frog is long, folded, sticky & bilobed at its anteriorend. It is adapted for capturing the prey (insect).
Stomach :
It is a muscular bag. It contains HCl & proteolytic enzyme. HCl makes the acidic pH of food & it is bacteriolytic.
Digestion is completed in intestine.
Undigested food is excreted through cloacal aperture.
Digested food is absorbed by the numerous finger like folds in the inner wall of intestine called villi and microvilli.
Digestive glands :
Two digestive glands are present in it.
(i) Liver :It forms bile. Bile is stored in gall-bladder. Bile is secreted in Intestine. Bile juice is an alkaline solution. It changes the pH of food from acidic to alkaline. It also causes emulsification of fat.
(ii) Pancreas: It secrete pancreatic juice in intestine. Pancreatic juice is called digestive juice as it is complete digestive juice.
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FAQs on Digestive System: Frog - Additional Study Material for NEET
| 1. What is the function of the digestive system in frogs? |  |
Ans. The digestive system in frogs is responsible for breaking down food into nutrients that can be absorbed and utilized by the body. It includes various organs such as the mouth, esophagus, stomach, small intestine, and large intestine, which work together to digest and absorb nutrients from the food.
| 2. How does the digestive system of frogs differ from that of humans? | |
Ans. While both frogs and humans have similar digestive systems, there are some notable differences. For instance, frogs have a shorter digestive tract compared to humans, as their diet mainly consists of insects and other small prey that are easier to digest. Additionally, frogs have a specialized organ called the cloaca, which serves as a common opening for the digestive, excretory, and reproductive systems.
| 3. What is the role of the liver in the frog's digestive system? | |
Ans. The liver plays a crucial role in the frog's digestive system. It produces bile, a substance that helps in the digestion and absorption of fats. Bile is stored in the gallbladder and released into the small intestine when needed. The liver also detoxifies harmful substances and stores nutrients for later use.
| 4. How does the digestive system of a frog adapt to its diet? | |
Ans. The digestive system of a frog is well-adapted to its diet of insects and small prey. Frogs have a long, sticky tongue that helps them catch and swallow their prey whole. Their stomach has strong muscles that aid in breaking down the food, and their small intestine is responsible for absorbing nutrients efficiently. The adaptation of a shorter digestive tract allows for quicker digestion of the relatively simple diet.
| 5. Can frogs regurgitate their food? | |
Ans. Yes, frogs have the ability to regurgitate their food if necessary. This may occur if they consume something toxic or indigestible. Regurgitation is a defense mechanism that helps them expel harmful substances from their digestive system. However, it is important to note that regurgitation is not a normal part of their digestive process and usually only occurs in response to specific circumstances.
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