Question

plz answer 14 15 ques.,...

Answer 1

1. So in amoeba respiration takes place through its cell membrane also called plasma membrane. Amoeba gets oxygen gas dissolved in surrounding water through its plasma membrane by the process of diffusion. ... The carbon dioxide gas is also liberated in the surrounding water through the same process of diffusion.

2. The secretions of the digestive glands help in the process of digestion. These glands include salivary glands, gastric glands, intestinal glands, liver and pancreas. a) Salivary glands secrete saliva along with enzymes.Ptyalin is the strach hydrolysing enzyme secreted by salivary glands in human beings.Salivary glands secrete saliva along with enzymes.Ptyalin is the strach hydrolysing enzyme secreted by salivary glands in human beings. It is also called as salivary amylase

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Answer 2

14. The mechanism of breathing in amoeba through ameoba is done by the process of diffusion . In cell membrane of amoeba due to diffusion oxygen enters into the cell membrane of ameoba and the process of respiration begins in ameoba . Oxygen and glucose is converted into energy and carbon dioxide and water .

15. The different glands associated with digestive system are
1. Salivary gland = It secrete Saliva which contain Salivary amalysis or ptyalin .which breaks down the starch into sugar or maltose . It is located in our mouth .

2.Gastric gland = It secrete HCL , Pepsin and Mucus . It is located in our stomach .

3.Liver = It secrete bile juice which converts the emulsification of fat (converts the large fat globules into small fat globules ) It is located between stomach and duodenum ( starting part of small intestine)

4.Pancreas = It secrete pancreatic juice which contains following enzymes
Trypsin, pancreatic amylase and lipase
It is located in between stomach and duodenum ( starting part of small intestine)


5.Intestinal gland = It is located in Jejunum ( middle part of large intestine) It secrete following enzyme
Erepsin or petidase
Sucrase
Maltase
Lactase

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