Tag: evs

Questions Related to evs

Ricinus communis, which yields Castor oil, belongs to the family

evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

  1. Meliaceae

  2. Pedaliaceae

  3. Cruciferae

  4. Euphorbiaceae

Show answer
Correct Option: D
Explanation:

The plant Ricinus communis which produces castor oil belongs to the family Euphorbiaceae.

So the correct option is D.

One of the following organisms has a saprophytic mode of nutrition. This organism is?

evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

  1. Mushroom

  2. Malaria parasite

  3. Leech

  4. Lice

Show answer
Correct Option: A

Why nutrition is necessity for an organism? 

evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

  1. It provides energy for the various metabolic processes in the body.

  2. It is essential for the growth of new cells and repair or replacement of worn out cells.

  3. It is needed to develop resistance against various diseases.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

Yes, nutrition is a necessity for an organism. nutrition is the process of obtaining and utilizing food for survival. It is required for the following purposes-
(a) It provides energy for the various metabolic processes in the body.
(b) It is essential for the growth of new cells and repair or replacement of worn out cells.
(c) It is needed to develop resistance against various diseases.

(d) it provides substrate for energy production which is utilized in the different life process for survival.
Thus, the correct answer is option D.

It is believed that height of a child depends upon the genes inherited from parents. However, it is often seen that tall parents may have short children and vice-versa. Are there factors other than genes, that can cause these variations?

evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

  1. Yes, nutrition can be a factor.

  2. No, it can be an other cause.

  3. Ambiguous.

  4. Data insufficient.

Show answer
Correct Option: A
Explanation:

Growing taller and nutrition are closely correlated. The process of cell division and their development requires an adequate supply of energy, amino acids, water, lipids, vitamins and minerals. With food, people receive about 50 essential nutrients for growth. Inadequate amounts of food or too low caloric food is the primary cause for growth failure, especially when the growth velocity is high in children. 

Proper nutrition is required for

evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

  1. Muscle growth only

  2. Brain development only

  3. Body growth and development

  4. None of the above

Show answer
Correct Option: C
Explanation:
Nutrition is the intake of food in relation to the body's dietary requirements. Good nutrition is a balanced diet necessary for the growth and development of the body. Whereas poor nutrition can lead to reduced immunity of the body.
So the correct answer is 'Body growth and development'.

Consumption of which of the following yields gross calorific value of nearly zero in a human?

evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

  1. Lettuce

  2. Egg white

  3. Bread

  4. Meat

Show answer
Correct Option: A
Explanation:

During the process of digestion, a lot of energy is utilized and there's a simultaneous release of heat represented in terms of gross calorific value.

Animal products and flesh are complex in composition and therefore have a high calorific value. On the contrary, plant products are simpler in composition, therefore, have a low calorific value. Hence among lettuce, egg white, bread, and meat, lettuce has the lowest or nearly zero in a human.
So, the correct answer is 'Lettuce'.

The term 'Homeostasis' was proposed by

evs nutrition and its deficiency general functions of food nutrition and its need in plants nutrition and its need

  1. Claude Bernard

  2. Walter cannon

  3. Marcello Malpighi

  4. Henle

Show answer
Correct Option: B
Explanation:

Walter cannon developed the concept of homeostasis from the earlier idea of Claude Bernard and popularized it in his book 'The Wisdom of the Body', 1932. Cannon presented four tentative propositions to describe the general features of homeostasis: 

1. Constancy in an open system- Such as our body represent, it requires mechanisms that act to maintain this constancy.
2. Steady-state conditions require that any tendency towards change automatically meets with factors that resist change.
3. Regulating system that determines the homeostatic state consists of a number of cooperating mechanisms acting simultaneously or successively.
4. Homeostasis is the result of organized self-government, it does not occur by chance.

Number of WBCs per $mm^3$ of human blood is ideally.

evs our body- its internal organ system leucocytes body fluids and immune responses respiratory and circulatory system

  1. $8000$

  2. $7000$

  3. $6500$

  4. $6000$

Show answer
Correct Option: A
Explanation:
White blood cells, or leukocytes, are a part of the immune system. They help our bodies fight infection. White blood cells circulate in the blood so they can be transported to an area that has developed an infection. In normal adult bodies there are 4,000 to 10,000 (average 8,000) white blood cells per microliter of blood. White blood cells are found in blood and lymph, cerebrospinal fluid, lymphatic ganglions, connective tissue, and inflammatory effusions, as they are mobile and migratory. Their average dimension varies between 9 and 18 µm. Normal blood values are about 8000 leukocytes per cubic millimeter. 

So, the correct answer is '8000'.

Number of leucocytes in decreasing order in human blood is?

evs our body- its internal organ system leucocytes body fluids and immune responses respiratory and circulatory system

  1. Eosinophils $>$ basophils $>$ neutrophils

  2. Neutrophils $>$ eosinophils $>$ basophils

  3. Basophils $>$ eosinophils $>$ neutrophils

  4. Eosinophils $>$ neutrophils $>$ basophils

Show answer
Correct Option: B
Explanation:

Basophils: 0.5–1.0 percent. Eosinophils: 1–4 percent. Lymphocytes: 20–40 percent. Monocytes: 2–8 percent, Neutrophils: 40% to 60% Lymphocytes: 20% to 40%.


So, the correct answer is 'Neutrophils > eosinophils > basophils'.

Find the correct descending order of percentage proportion of leucocytes in human blood.

evs our body- its internal organ system leucocytes body fluids and immune responses respiratory and circulatory system

  1. Neutrophils --> Basophils --> Lymphocytes Acidophils (Eosinophils) -->Monocytes

  2. Monocytes --> Neutrophils --> Lymphocytes --> Acidophils-->Basophils

  3. Neutrophils --> Lymphocytes Monocytes --> Acidophils -->Basophils

  4. Lymphocytes Acidophils --> Basophils --> Neutrophils-->Monocytes

Show answer
Correct Option: C
Explanation:

The relative proportions of the different types of white blood cells are: Neutrophils (roughly 60 – 70%), Lymphocytes (roughly 20 – 30%), Monocytes (approximately 1 – 6%), Eosinophils (approximately 1 – 3%), Basophils (less than 1%).

Thus, the correct answer is 'Neutrophils --> Lymphocytes Monocytes --> Acidophils -->Basophils.'