Questions Related to evs - i

Multiple choice evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

Iodine stains

  1. Pectin

  2. Lignified regions

  3. Cellulose

  4. Starch.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Iodine is used in chemistry as an indicator for starch. When starch is mixed with iodine in solution, an intensely dark blue colour develops, representing a starch/iodine complex. Starch is a substance common to most plant cells and so a weak iodine solution will stain starch present in the cells. Iodine is one component in the staining technique known as Gram staining, used in microbiology. 

So, the correct answer is 'Starch.'

Multiple choice evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

Sugar yielding part of Beta vulgaris is

  1. Leaf

  2. Shoot

  3. Root

  4. All the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sugar beetroots are processed into white sugar, pulp and molasses for food, feed or industrial applications. A typical sugar beetroot consists of 75.9% water, 2.6% non-sugars, 18.0% sugar and 5.5% pulp. In the sugar fraction, 83.1% is recovered as crystalline sucrose, 12.5% is recovered as molasses.

So the correct option is C.

Multiple choice evs - i constituents of food minerals in our diets types of nutrients nutrients and deficiency

Name the main constituent of the food, in the absence of that one cannot live

  1. Carbohydrates

  2. Mineral salts

  3. Proteins

  4. Vitamins

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbohydrate is the major source of energy without which one cannot live. It is because carbohydrate is broken down to form instant energy in the form of glucose which can be converted into ATP and thus used for the regular functioning of the cell. Other forms of energy like proteins, vitamins, and minerals are the extra components that are not directly involved in the formation of energy.

So, the correct option is 'carbohydrates'