Board of Intermediate & Secondary Education Saidu Sharif Swat Model Papers Biology -I of Class 11 (FA/FSc)



Total Time: 3 Hours Max: Marks: 85
Note: There are THREE Sections of this Paper i.e. A.B and C, attempt each according to the given instructions.
Time: 20 Minutes SECTION-A Marks: 18
Note: Attempt all parts of Section – A. Section –A must be return to the superintendent after 20
minutes even if you have not attempted any question. Overwriting/ defacing/Cutting etc is prohibited
in Section-A and no credit will be given to such answer.

I. Write the correct option i.e. A/B/C/D in the empty boxes.
i. The scavengers or digestive bags of a cell are _____________.
(A) Chromosomes (B) Castrosomes (C) Lysosomes (D) Ribosomes
ii. Type of plastids which are colourless are _____________.
(A) Chloroplasts (B) Chromoplasts (C) Heucoplasts (D) None of these
iii. Amino acids mainly differ from each other by the difference in their ___________.
(A) R-group (B) Amino group (C) Carboxyl group(D) Alpha group
iv. Which of the following is not an enzyme? _____________.
(A) FADH (B) ATPase (C) RNAase (D) Dextrase


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v. Which of the following generate more energy in aerobic respiration? ___________.
(A) Glucose (B) Triglyceroid (C) Protein (D) Sucrose
vi. In photo respiration oxygen combines with RUBP & produce _____________.
(A) ATP (B) Water (C) (D) None of these
vii. The only known human disease caused by a viroid is _____________.
(A) Hepatitis “A” (B) Hepatitis “B” (C) Hepatitis “C” (D) Hepatitis “D”
viii. How many genes are there in HIV? _____________.
(A) 9 (B) 500 (C) 20,000 (D) 25,000
ix. Helical heterotrophic bacteria spiraling through environment are called _________.
(A) Chlamydlas (B) Delta proteobacteria
(C) Gram positive bacteria (D) Spirochetes
x. Dikaryon is a cell in Fungi containing _____________.
(A) Two haploid nuclei (B) Two diploid nuclei
(C) One haploid & one diploid nucleus (D) None of these
xi. The microspores produced in microsporangia germinate to form _____________.
(A) Male gametophyte (B) Female gametophyte
(C) Sporophyte (D) Embryophyte
xii. Animals found in more than one morphological form are said to be ____________.
(A) Multigenecily (B) Polymorphism (C) Psendomorphism(D) Isolation
xiii. The tissue most likely to provide flexible support is the _____________.
(A) Epidermis (B) Sclerenchyma (C) Parenchyma (D) Collenchyma
xiv. Caruivorous plants digest animals to fulfill their need for _____________.
(A) Carbohydrates (B) Lipids & Steroids (C) Nitrites (D) Water
xv. Bile juice is _____________.
(A) Alkaline (B) Acidic (C) Neutral (D) Near acidic
xvi. Pancreatic exocrine cells are arranged in grape like clustess called _____________.
(A)Islets of langerhans(B) Acini (C) Alpha cells (D) Beta cells
xvii. Sensors located in the blood vessels of humans to detect pressure of the blood are
called _____________.
(A) Thermoreceptors (B) Chemoreceptors (C) Pacinian corpuscles(D) Basoreceptors
xviii. Surgical removal of thymus of a new born shall result in falure to produce _____.
(A) Monocytes (B) T-lymphocytes (C) B-lymphocytes (D) D-basophills


Model Paper
Biology - I


Note: Time allowed for section B and C is 2 hours and 40 minutes.

SECTION “B” Marks: 40
II. Attempt any TEN Parts out of the following. Each Part carries equal marks.
i. What is Cytoskeleton? What is its importance in a cell?
ii. Compare the Isomers & sterioisomers of Glucose.
iii. How substrate concentration can affect the rate or enzyme action?
iv. What is Photorespiration?
v. What are the symptoms of HIV?
vi. What are Archea?
vii. What is Carrageenan?
viii. What is an Antheridium & an Archegonium?
ix. What is the importance of polymorphism?
x. List the adaptations of plants to cope with low temperature.
xi. What is the advantage of emulsification of fats by bile juice?
xii.What is meant by Cyanosis?
xiii. What are the agents of non-specific defense & specific defence?


SECTION “C” Marks: 27
Note: Attempt any THREE questions of the following. Each question carries equal Marks.
III. What are the different components of second line of defence? Explain in detail.

IV. How plant movements occure? What are its different types?

V. What do you know about Photorespiration & C4 Photosynthesis?

VI. What are the different Hypothesis about enzyme action? Discuss in detail.