Home
Class 12
BIOLOGY
A : Vomiting is the forcible expulsion o...

A : Vomiting is the forcible expulsion of the contents of the upper gastrointestinal tract through the mouth.
R : The strongest stimuli for vomiting are irritation and distension of the stomach.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion is true but the reason is not the correct explanation of the assertion, then mark (2).

C

If Assertion is true statement but Reason is false, then mark (3).

D

If both Assertion and Reason are false statements, then mark (4).

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • DIGESTION AND ABSORPTION

    AAKASH INSTITUTE|Exercise Assignment (SECTION-C )|66 Videos
  • CHEMICAL COORDINATION AND INTEGRATION

    AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION-D)|10 Videos
  • ECOSYSTEM

    AAKASH INSTITUTE|Exercise Section - D (Assertion - Reasion Type questions)|15 Videos

Similar Questions

Explore conceptually related problems

Ejection of stomach contents through the mouth is called ___.

Comprehension: Read the passage and answer the questions that follow. The term 'dietary fibres' refers collectively to indigestible carbohydrates present in plant foods. The importance of these dietary fibres came into the picture when it was observed that the people taking a diet rich in these fibres had low incidence of coronary heart disease, irritable bowel syndrome, dental caries and gall stones. The foodstuffs rich in these dietary fibres are cereals and grains, legumes, fruits with seeds, citrus fruits, carrots, cabbage, green leafy vegetables, apples, melons, peaches, pears etc. These dietary fibres are not digested by the enzymes of the stomach and the small intestine. They have the property of holding water and because of it, these get swollen and behave like a sponge as these pass through the gastrointestinal tract. The fibres add bulk to the diet and increase transit time in the gut and decrease the time of release of ingested food in the colon. These fibres hold water so the stools are soft bulky and readily eliminated. In recent years, it has been considered essential to have some amount of fibres in the diet. Their beneficial effects lie in preventing heart disease and decreasing cholesterol level. The fibres like gum and pectin are reported to decrease post prandial (after meals) glucose level in blood. They are also recommended for the management of certain types of diabetes. The fibres increase motility of the small intestine and the colon and so there is less time for exposure of the mucos a to harmful toxic substances. Therefore, there is a less desire to eat and the energy intake can be maintained within the range of requirement. This phenomenon helps in keeping a check on obesity. The dietary fibres may have some adverse effects on nutrition by binding some trace metals like calcium, magnesium, phosphorus, zinc and others and therefore preventing their proper absorption. This may pose a possibility of nutritional deficiency especially when diets contain marginal levels of mineral elements. This may put constraints on increasing dietary fibres. It is suggested that an intake of 40 gram dietary fibres per day is desirable. SubQuestion No : 21 The dietary fibres behave like a sponge because they:

Which of the following statement are CORRECT? I. Renin is a proteolytic enzyme found in gastric juice of infants which helps in the digestion of milk proteins. II. No significant digestive activity occurs in the large intestine. III. The egestion of faeces to the outside through the anal opening ( defecation ) is a voluntary process and is carried out by a mass peristaltic movement. IV. Ejection of stomach contents through the mouth is a reflex action controlled by the vomiting center in the medulla.

Consider the following four statements (a-d) and select the option which includes all the correct ones only :- (a) Faecal accumulation in the rectum initiates a neural reflex causing an urge for its removal. (b) Reflex action for vomiting is controlled by medulla. (c) Irregular bowel movements causeconstipation (d) Bowel movement cause "Vomiting is the ejection of stomach contents through Anus.