BISE Multan · Class 11 · Biology

BISE Multan · Class 11 · Biology · 2025 · First Annual · Group 2

2025 · First Annual

Transcribed from the identified examination paper. Check the board, session and course before use. SchoolOrbit is not affiliated with the issuing board.

Objective

Source code: 2462 · Printed marks: 17 · Time: 20 Minutes

OBJECTIVE

You have four choices for each objective type question as A, B, C and D. The choice which you think is correct, fill that bubble in front of that question number, on bubble sheet. Use marker or pen to fill the bubbles. Cutting or filling two or more bubbles will result in zero mark in that question.

Q1(1)
A large regional community primarily determined by climate is:
- (A)
  Biodiversity
- (B)
  Biome
- (C)
  Biosphere
- (D)
  Population
Q1(2)
DNA contains all except.
- (A)
  Adenine
- (B)
  Guanine
- (C)
  Cytosine
- (D)
  Uracil
Q1(3)
Enzymes involved in synthesis of proteins are integral part of:
- (A)
  Ribosomes
- (B)
  Lysosomes
- (C)
  Peroxisomes
- (D)
  Glyoxysomes
Q1(4)
Cell organelle plays role in the maintenance of cell shape:
- (A)
  Microtubules
- (B)
  Microfilaments
- (C)
  Intermediate filaments
- (D)
  Centrioles
Q1(5)
Mumps and measles viruses belong to group:
- (A)
  Influenza-viruses
- (B)
  Polio-viruses
- (C)
  Herpes viruses
- (D)
  Paramyxoviruses
Q1(6)
Chemical substances used on living tissues that inhibit the growth of microorganisms are called:
- (A)
  Antiseptics
- (B)
  Antibiotics
- (C)
  Disinfectants
- (D)
  Vaccine
Q1(7)
Plasmodium is transmitted by the bite of an infected:
- (A)
  Tsetse fly
- (B)
  Male anophelese mosquito
- (C)
  Female anophelese mosquito
- (D)
  Common housefly
Q1(8)
Aflatoxins/carcinogenic mycotoxins are produced by:
- (A)
  Neurospora
- (B)
  Aspergillus
- (C)
  Penicillium notatum
- (D)
  Saccharomyces cerevisiae
Q1(9)
Pollen grain contains a generative cell and a:
- (A)
  Synergids
- (B)
  Female gamete
- (C)
  Endosperm
- (D)
  Tube cell
Q1(10)
In birds a thick muscular structure which is used for crushing food is called:
- (A)
  Gizzard
- (B)
  Syrinx
- (C)
  Crop
- (D)
  Rectum
Q1(11)
Reptiles flourished throughout:
- (A)
  Palaeozoic era
- (B)
  Proterozoic era
- (C)
  Mesozoic era
- (D)
  Cenozoic era
Q1(12)
The water splitting step of photosynthesis that releases oxygen is called:
- (A)
  Hydrolysis
- (B)
  Photolysis
- (C)
  Photophosphorylation
- (D)
  Chemiosmosis
Q1(13)
The end product of glycolysis is:
- (A)
  Acetyl CoA
- (B)
  Fumarate
- (C)
  Succinate
- (D)
  Pyruvate
Q1(14)
When chyme passes from stomach into duodenum, its acidity stimulates the release of secretions from:
- (A)
  Gastric glands
- (B)
  Zymogen cells
- (C)
  Pancreas, liver and duodenal cells
- (D)
  Oxyntic cells
Q1(15)
In man a complex cartilaginous structure surrounding the upper end of the trachea is:
- (A)
  The larynx
- (B)
  The pharynx
- (C)
  The diaphragm
- (D)
  Wind pipe
Q1(16)
The vein which connects the alimentary canal to liver is:
- (A)
  Inferior vena cava
- (B)
  Thoracic duct
- (C)
  Pulmonary vein
- (D)
  Hepatic portal
Q1(17)
Chemical which dilates capillaries is:
- (A)
  Heparin
- (B)
  Histamine
- (C)
  Antitoxins
- (D)
  Venom

Subjective

Source code: 26 · Printed marks: 68 · Time: 2.40 Hours

Write same question number and its parts number on answer book, as given in the question paper.
Q2: Attempt any eight parts. 8×2=16.
Q3: Attempt any eight parts. 8×2=16.
Q4: Attempt any six parts. 6×2=12.
SECTION-II: Attempt any three questions. 3×8=24.

SECTION-I

2.
Attempt any eight parts.
Q2(i)
Why proper arrangement of amino acids is necessary for proteins? Give an example.
(2 marks)
Q2(ii)
Differentiate between Apoenzyme and Holoenzyme.
(2 marks)
Q2(iii)
What will happen to enzymatic reaction if the temperature becomes $50^{\circ} C$ ?
(2 marks)
Q2(iv)
What are two different regions of active site?
(2 marks)
Q2(v)
Compare Lichens with Mycorrhizae.
(2 marks)
Q2(vi)
What are Aflatoxins?
(2 marks)
Q2(vii)
What is the importance of nematocysts in coelenterates?
(2 marks)
Q2(viii)
Differentiate between spiral and radial cleavage.
(2 marks)
Q2(ix)
What are three basic characteristics of chordates?
(2 marks)
Q2(x)
Define regeneration. Name the phylum in which it is common.
(2 marks)
Q2(xi)
What is bioenergetics? Does it obey laws of thermodynamics?
(2 marks)
Q2(xii)
Differentiate between external and cellular respiration.
(2 marks)
3.
Attempt any eight parts.
Q3(i)
Define the terms Microbiology and Biotechnology.
(2 marks)
Q3(ii)
Differentiate between simple and complex community.
(2 marks)
Q3(iii)
Compare the functions of both types of Endoplasmic reticulum only two.
(2 marks)
Q3(iv)
Differentiate true solution and colloidal solution.
(2 marks)
Q3(v)
What is the role of contractile vacuole in fresh water ciliates?
(2 marks)
Q3(vi)
Give any two reasons for creating a separate kingdom protista.
(2 marks)
Q3(vii)
Briefly explain the importance of algae.
(2 marks)
Q3(viii)
Briefly describe diversity among protista.
(2 marks)
Q3(ix)
Give any two differences between dicot and monocots.
(2 marks)
Q3(x)
What is overtopping and planation in history of leaf evolution?
(2 marks)
Q3(xi)
Differentiate between Guttation and Bleeding.
(2 marks)
Q3(xii)
What is a single circuit heart in which group it is present?
(2 marks)
4.
Attempt any six parts.
Q4(i)
Draw labelled diagram of HIV.
(2 marks)
Q4(ii)
What are plasmids? Give their role.
(2 marks)
Q4(iii)
Compare saprophytic and parasitic mode of nutrition.
(2 marks)
Q4(iv)
What is Chlorosis? Give its causes.
(2 marks)
Q4(v)
Define symbiotic nutrition with example.
(2 marks)
Q4(vi)
Compare pulmonary and cutaneous respiration in frog.
(2 marks)
Q4(vii)
Why larynx also known as voice box?
(2 marks)
Q4(viii)
Differentiate bronchi with bronchioles.
(2 marks)
Q4(ix)
Compare arterial and venous blood in response to concentration of carbon dioxide.
(2 marks)

SECTION-II

Attempt any three questions.

Q5(a)
Narrate biological method in detail.
(4 marks)
Q5(b)
Give comparison between open and closed circulatory system.
(4 marks)
Q6(a)
Write a comprehensive note on the primary structure of protein focusing on insulin and haemoglobin.
(4 marks)
Q6(b)
Can we gain something from fungi discuss any four?
(4 marks)
Q7(a)
State characteristics of cyanobacteria.
(4 marks)
Q7(b)
Write note on fern Prothallus.
(4 marks)
Q8(a)
Explain the replication of Bacteriophage diagrammatically.
(4 marks)
Q8(b)
Sketch the outline of the Kreb cycle showing all the steps.
(4 marks)
Q9(a)
Discuss the structure and functions of Golgi apparatus.
(4 marks)
Q9(b)
Describe the structure and functions of human stomach.
(4 marks)

Original source references (5)

The original files and numbering are retained. Equivalent files do not repeat the questions above.

Objective · 2462 · Printed marks: 17 · Time: 20 Minutes
Objective · 2464 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Objective · 2466 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Objective · 2468 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Subjective · 26 · Printed marks: 68 · Time: 2.40 Hours