Grade 4 Discover : Set 1 Copy
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Our digestive system secretes many digestive juices which are important for digesting food properly.
This juice begins the process of digestion and, with the help of enzymes, it breaks down the food we eat into smaller and simpler pieces.
It mostly contains water and helps in moistening the food we take into our mouths.
What digestive juice are we talking about?CorrectIncorrect
They also contain anti-microbial agents and white blood cells. They help in killing germs in the food which we eat.
This part of the digestive system is called the esophagus (pronounced as e-so-fay-gus). We know it by an easier, more common name.
This organ does the important job of connecting the pharynx with the stomach.
It is shaped like a long pipe and is made of muscles that push food into the stomach.
By what common name do we know this organ?
Pushes down food with wave-like contractions.
The process of mildly heating milk helps in killing germs and preserving the milk for a longer time.
The process was developed by Louis Pasteur in the 19th Century.
What is the technique called?CorrectIncorrect
Think of his name- Louis Pasteur.
This mineral can be found in abundance on earth.
Several food items that we eat, particularly green, leafy vegetables, contain this mineral.
Apart from giving blood its red colour, it also helps transport oxygen.
Which mineral, commonly found at construction sites, is this?CorrectIncorrect
It is the main component of Haemoglobin
The digestion process ends with the process of excretion where the wastes generated by digestion are disposed.
Perspiration is another way by which waste is disposed through the body’s largest organ.
In perspiration, salty liquid containing excess minerals and toxins is released through pores.
What is the more common name of perspiration? CorrectIncorrect
Some of the waste –such as electrolytes or essential salts- that is excreted is absorbed by the body.