Which layer of the alimentary canal is responsible for segmentation and peristalsis?

Muscularis externa layer.

Explanation:

The muscularis externa layer lies adjacent to the submucosa membrane. This is the third layer of the gastro intestinal tract. The muscularis externa of the colon is thick as it carries and passes urine and feces.

Muscularis externa layer prevents the backward travelling of food. This layer is mainly responsible for the peristalsis movement of food in the gastro intestinal tract and responsible for the segmentation as well.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.