Monday, December 10, 2012

CBSE Class 9 - PSA Quiz (Biology)

PSA Quiz (Biology)
CBSE Class 9 - PSA Quiz (Biology)

Passage based MCQs (1-5)
Nutrition and Health Benefits

Many consumers make food choices that will benefit health. Food manufacturers and restaurant chefs have responded to scientific findings linking health with nutrition by offering an abundant selection of health-promoting foods and beverages. Foods that provide health benefits beyond their nutrient contributions are called functional foods. Whole foods—as natural and familiar as oatmeal or tomatoes—are the simplest functional foods. In other cases, foods have been modified to provide health benefits, perhaps by lowering the fat contents. In other cases, manufacturers have fortified foods by adding nutrients or phytochemicals that provide health benefits Examples of these functional foods include orange juice fortified with calcium to help build strong bones and margarine made with a plant sterol that lowers blood cholesterol.
Consumers typically welcome new foods into their diets, provided that these foods are reasonably priced, clearly labeled, easy to find in the grocery store, and convenient to prepare. These foods must also taste good—as good as the traditional choices. Of course, a person need not eat any of these “special” foods to enjoy a healthy diet; many “regular” foods provide numerous health benefits as well. In fact, “regular” foods such as whole grains; vegetables and legumes; fruits; meats, fish, and poultry; and milk products are among the healthiest choices a person can make.
(Passage Taken from Book: Understanding Nutrition by Roles, Pinna, Whitney)
Q1: Which of the following is the simplest functional food?

(a) margarine with sterol extract
(b) oatmeal
(d) orange juice with Calcium
(e) chocolates

Q2: Functional foods include

(a) whole foods
(b) modified foods
(c) fortified foods
(d) all of the above

Q3: Which of the following we cannot infer from the above passage?

(a) While selecting foods keep nutrition in mind.
(b) Many chefs have started preparing foods giving preference to nutrition.
(c) Functional foods are better than regular food.
(d) Consumers welcome new foods in their diets.

Q4: Which of the following is a regular food?

(a) oatmeal
(b) whole grains
(c) Calcium
(d) Sterol

Q5: Which plant extract is useful in lowering cholesterol in blood?

(a) Sterol
(b) Orange juice
(c) Calcium
(d) Milk products

(6-15: Standalone MCQs)
Q6: Cell wall in cork is impervious to water and gases due to the presence of
(a) Lignin
(b) Suberin
(c) Cellulose
(d) Pectin

Q7 Who among the following said that 'fermentation is a biochemical process'?
(a) A Fleming
(b) Kitasate
(c) L. Pasteur
(d) Ivanowske

Q8: What is proteomics?
(a) the linkage of each gene to a particular protein
(b) the totality of the functional possibilities of a single protein
(c) the study of the full protein set encoded by a genome
(d) the study of how amino acids are ordered in a protein

Q9: Which of the following is an example of nutritional deficiency disease?
(a) Hypertension
(b) Rickets
(c) Diabetes
(d) Gastroenteritis

Q10: Anti-viral drugs are difficult to make because, viruses
(a) live outside the host cells
(b) live in blood stream
(c) live in consumed food particles
(d) live inside the host cells

Q11: Which of the following is a viral infection?
(a) Dipteria
(b) Influenza
(c) Cholera
(d) Typhoid

Q12: Multinucleated condition is seen in
(a) only skeletal muscle cells
(b) only smooth muscle cells
(c) both smooth and skeletal muscle cells
(d) neither smooth nor skeletal muscle cells

Q13: Which of the following is an example of a single cell that does not function as a full fledged organism?
(a) White blood cells (WBC)
(b) Amoeba
(c) WBC and Amoeba
(d) Paramecium

Q14: Gymnosperms are characterized by

(a) Seeds inside fruits
(b) Seeds with wings
(c) Naked Seeds
(d) Endospermic Seeds

Q15: Liver is a vital organ in most organisms, particularly all vertebrates. Identify the correct combination of statements which is true about the liver.
     I. It secretes a hormone for controlling sugar level in the blood.
    II. It converts excess glucose into glycogen and vice versa.
   III. It secretes digestive enzymes.
   IV. It plays a major role in the breakdown of hemoglobin.

(a) I and IV
(b) II and III
(c) III and IV
(d) II and IV

1: (b) oatmeal
2: (d) all of the above
3: (c) Functional foods are better than regular food.
4: (b) whole grains
5: (a) Sterol
6: (b) Suberin
7: (c) L. Pasteur
8: (c) the study of the full protein set encoded by a genome
9: (b) Rickets
10: (d) live inside the host cells
11: (b) Influenza
12: (a) only skeletal muscle cells
13: (a) White blood cells (WBC)
14: (c) Naked Seeds
15: (d) II and IV


  1. hey blogger.. Can we please be in touch. I really need allot of help for my 9th and 10th class exams and you seem to be the best option.