Tag: busy at work - our internal organs

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Multiple choice bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion types of ecological pyramids introduction to human digestive system

Choose the correct answers from the alternatives given.
In Paramecium, the phenomenon of cyclosis is associated with

  1. digestion

  2. excretion

  3. locomotion

  4. reproduction
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cyclosis is the movement in the fluid in the cytoplasm where the proteins and nutrient in the cytoplasm get digested.

So, the correct option is 'digestion'.

Multiple choice evs - i the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion

Intake of food is called

  1. Ingestion

  2. Egestion

  3. Digestion

  4. Nutrition
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Ingestion is the consumption of a substance by an organism.
  • This is accomplished by taking in the substance through the mouth into the gastrointestinal tract, such as through eating or drinking.
    Hence, the correct answer is A.
Multiple choice bio-chemistry the muscular system and digestive system in human beings busy at work - our internal organs skeletal and digestive system from tasting to digestion

Plant seed oil is obtained from

  1. Saccharum munja

  2. Arachis hypogea

  3. Cicer areitinum

  4. Saccharum officinarum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The seeds of Arachis hypogea (family-Papileonaceae) contain 40-50% oil contents. On. hydrogenation it yields vegetable ghee. It is very important non-drying oil used for cooking and also as illuminant and lubricant in soap industry.

So the correct option is B.

Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

The ruminants bring back swallowed grass into their mouth and chew it for sometime.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The ruminants bring back swallowed grass into their mouth and chew it for sometime. Grass has cellulose. It is the carbohydrate which can only be digested by ruminants because they have rumen. When they eat grass, it is sent to the rumen where enzymes acts on it and softens it. Softened cellulose is called cud. It is sent back to the mouth where ruminants chew it for sometime.

Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

The digestive tracts of ruminants contain

  1. Halophilic bacteria

  2. Thermoacidophilic bacteria

  3. Methanobacteria

  4. Mycoplasma
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Methanogens are a group of archaebacteria that occur in marshy areas where they convert formic acid and carbon dioxide into methane. Some of the methanogen archaebacteria live as symbionts (Eg. Methanobacterium) inside the rumen or first chamber in the stomach of herbivorous animals that chew their cud (ruminants). These archaebacteria are helpful to the ruminants in the fermentation of cellulose. 

Halophiles are also archaebacteria which usually occur in the salt-rich substrate like salt marshes e.g. Halobacterium.. Thermoacidophiles have dual ability to tolerate high temperature as well as high acidity. They often live in hot sulphur springs where the temperature may be as high as 80 degrees and pH as low as 2 e.g. Thermoproteus. 
Mycoplasma is the simplest and smallest of free-living prokaryotes. They were discovered in the pleural fluid of cattle suffering from pleuropneumonia and called as Pleuropneumonia-like organisms (PPLOs). 
Thus, the correct answer is option C.

Multiple choice evs - i busy at work - our internal organs digestion in ruminants nutrition in other organisms what do animals eat?

The ruminant stomach has four parts ; but camel lacks one part i.e., .............

  1. Abomasum

  2. Omasum

  3. Rumen

  4. Reticulum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In ruminants, the stomach is differentiated into separate chambers - rumen (for churning, digestion of cellulose and hemicellulose and bacterial fermentation), reticulum (traps and stores temporarily large feed particles), omasum (absorbs water) and abomasum (similar to human stomach, digests proteins). Abomasum is the true stomach. Omasum is absent in camels. In camels rumen and reticulum have diverticula or water pockets for temporary storage of food.

Multiple choice evs - i busy at work - our internal organs digestion in ruminants nutrition in other organisms what do animals eat?

Rumen of a cow is a part of its

  1. Intestine

  2. Stomach

  3. Caecum

  4. Rectum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ruminants (cattle, sheep, deer, giraffes) are hooved animals with a stomach divided into four chambers- rumen, reticulum, omasum, and abomasum. Symbiotic bacteria and protists living in the first two chambers digest cellulose, splitting some of it into sugars, which are then used by the host and the bacteria themselves. The bacteria produce fatty acids during their metabolism, some of which are absorbed by the animal and serve as an important energy source. Food that is not sufficiently chewed clumps together, forming a cud. The cud is regurgitated into the animals mouth, where it is mixed with saliva and chewed again. When the cud is reswallowed, the partly digested food is further broken down by the cows own enzymes.