BISE Multan · Class 11 · Biology

BISE Multan · Class 11 · Biology · 2026 · First Annual · Group 2 · New course

2026 · 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

These versions contain different content. Choose the source edition you need; they are alternatives, not consecutive exam sections.

Objective · 2462

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

Q.No.1 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.

OBJECTIVE

Q1(1)
Hair like structures in bacteria that help them in exchange of genetic material:
- (A)
  Flagella
- (B)
  Plasmids
- (C)
  Cell membrane extensions
- (D)
  Pili
Q1(2)
Which phylum is characterized by the presence of collar cells?
- (A)
  Phylum cnidaria
- (B)
  Phylum porifera
- (C)
  Phylum nematoda
- (D)
  Phylum Mollusca
Q1(3)
Bacterial cell structures that help them in DNA replication, cell division and respiration:
- (A)
  Mesosomes
- (B)
  Plasmids
- (C)
  Endospore
- (D)
  Capsule
Q1(4)
Which statement does not apply to chloroplast?
- (A)
  They synthesize ATP
- (B)
  They have chlorophyll pigments that absorb light for photosynthesis
- (C)
  They have internal membrane system called grana
- (D)
  Their inner membrane contain folds called cristae
Q1(5)
Polymers of isoprene sub-units are known as:
- (A)
  Steroids
- (B)
  Prostaglandins
- (C)
  Terpenes
- (D)
  Waxes
Q1(6)
Informative data provided by Erwin Chargaff(1951) in DNA studies:
- (A)
  Adenine always form H-bonds with thymine of next strand, and guanine with cytosine
- (B)
  In a DNA molecule, ratio of adenine and thymine are equal and so are guanine and cytosine
- (C)
  DNA is a fibrous structure that coiled into a helix
- (D)
  Both the polynucleotide strands are 2 nm apart
Q1(7)
Enzymes that catalyse non-hydrolytic addition or removal of groups from substrates are:
- (A)
  Transferases
- (B)
  Ligases
- (C)
  Lyases
- (D)
  Hydrolases
Q1(8)
The process that is cytosolic breakdown of glucose to pyruvate:
- (A)
  Glycolysis
- (B)
  Krebs’s cycle
- (C)
  Pyruvic acid oxidation
- (D)
  Electron-transport chain and chemiosmosis
Q1(9)
In case of cyclic photophosphorylation:
- (A)
  Only NADPH are generated
- (B)
  Only ATPs are generated
- (C)
  Both NADPH and ATPs are generated,
- (D)
  Glucose is to be synthesized
Q1(10)
The meristems that are separated from apex and situated at the basis of internodes:
- (A)
  Cambium
- (B)
  Apical meristem
- (C)
  Inter calary meristem
- (D)
  Lateral meristem
Q1(11)
The process by which low temperature stimulates flowering in biennials:
- (A)
  Photoperiodism
- (B)
  Phototropism
- (C)
  Osmoregulation
- (D)
  Vernalisation
Q1(12)
A back flush of acidic chyme from stomach into oesophagus that causes painful burning sensation in the chest:
- (A)
  Pyrosis
- (B)
  Antiperistalsis
- (C)
  Hunger pangs
- (D)
  Constipation
Q1(13)
It gives a distinct red colour to skeletal muscles:
- (A)
  Carbon dioxide
- (B)
  Haemoglobin
- (C)
  Myoglobin
- (D)
  Cholesterol
Q1(14)
The main cause of cyanosis is:
- (A)
  Blood clot is formed in the capillaries of brain
- (B)
  Failure of interatrial foramen to close
- (C)
  Damage of neurons of kidneys
- (D)
  Infection in lymph nodes
Q1(15)
Lymphoid mass that filters blood through its macrophages and lymphocytes, that destroy foreign particles and aged RBCs.
- (A)
  Mucosa
- (B)
  Adenoids
- (C)
  Thymus
- (D)
  Spleen
Q1(16)
Which one of the given bones is not from facial bones?
- (A)
  Lacrimal
- (B)
  Ethmoid
- (C)
  Zygomatic
- (D)
  Vomer
Q1(17)
The joint between first and second vertebrae of neck is:
- (A)
  Pivot joint
- (B)
  Saddle joint
- (C)
  Gliding joint
- (D)
  Ellipsoidal joint

Objective · 2464

Source code: 2464 · Printed marks: 17 · Time: 20 Minutes

OBJECTIVE

Q1(1)
Polymers of isoprene sub-units are known as:
- (A)
  Steroids
- (B)
  Prostaglandins
- (C)
  Terpenes
- (D)
  Waxes
Q1(2)
Informative data provided by Erwin Chargaff(1951) in DNA studies:
- (A)
  Adenine always form H-bonds with thymine of next strand, and guanine with cytosine
- (B)
  In a DNA molecule, ratio of adenine and thymine are equal and so are guanine and cytosine
- (C)
  DNA is a fibrous structure that coiled into a helix
- (D)
  Both the polynucleotide strands are 2 nm apart
Q1(3)
Enzymes that catalyse non-hydrolytic addition or removal of groups from substrates are:
- (A)
  Transferases
- (B)
  Ligases
- (C)
  Lyases
- (D)
  Hydrolases
Q1(4)
The process that is cytosolic breakdown of glucose to pyruvate:
- (A)
  Glycolysis
- (B)
  Krebs’s cycle
- (C)
  Pyruvic acid oxidation
- (D)
  Electron transport chain and chemiosmosis
Q1(5)
In case of cyclic photophosphorylation:
- (A)
  Only NADPH are generated
- (B)
  Only ATPs are generated
- (C)
  Both NADPH and ATPs are generated
- (D)
  Glucose is to be synthesized
Q1(6)
The meristems that are separated from apex and situated at the basis of internodes:
- (A)
  Cambium
- (B)
  Apical meristem
- (C)
  Inter calary meristem
- (D)
  Lateral meristem
Q1(7)
The process by which low temperature stimulates flowering in biennials:
- (A)
  Photoperiodism
- (B)
  Phototropism
- (C)
  Osmoregulation
- (D)
  Vernalisation
Q1(8)
A back flush of acidic chyme from stomach into oesophagus that causes painful burning sensation in the chest:
- (A)
  Pyrosis
- (B)
  Antiperistalsis
- (C)
  Hunger pangs
- (D)
  Constipation
Q1(9)
It gives a distinct red colour to skeletal muscles:
- (A)
  Carbon dioxide
- (B)
  Haemoglobin
- (C)
  Myoglobin
- (D)
  Cholesterol
Q1(10)
The main cause of cyanosis is:
- (A)
  Blood clot is formed in the capillaries of brain
- (B)
  Failure of interatrial foramen to close
- (C)
  Damage of neurons of kidneys
- (D)
  Infection in lymph nodes
Q1(11)
Lymphoid mass that filters blood through its macrophages and lymphocytes, that destroy foreign particles and aged RBCs.
- (A)
  Mucosa
- (B)
  Adenoids
- (C)
  Thymus
- (D)
  Spleen
Q1(12)
Which one of the given bones is not from facial bones?
- (A)
  Lacrimal
- (B)
  Ethmoid
- (C)
  Zygomatic
- (D)
  Vomer
Q1(13)
The joint between first and second vertebrae of neck is:
- (A)
  Pivot joint
- (B)
  Saddle joint
- (C)
  Gliding joint
- (D)
  Ellipsoidal joint
Q1(14)
Hair like structures in bacteria that help them in exchange of genetic material:
- (A)
  Flagella
- (B)
  Plasmids
- (C)
  Cell membrane extensions
- (D)
  Pili
Q1(15)
Which phylum is characterized by the presence of collar cells?
- (A)
  Phylum cnidaria
- (B)
  Phylum porifera
- (C)
  Phylum nematoda
- (D)
  Phylum Mollusca
Q1(16)
Bacterial cell structures that help them in DNA replication, cell division and respiration:
- (A)
  Mesosomes
- (B)
  Plasmids
- (C)
  Endospore
- (D)
  Capsule
Q1(17)
Which statement does not apply to chloroplast?
- (A)
  They synthesize ATP
- (B)
  They have chlorophyll pigments that absorb light for photosynthesis
- (C)
  They have internal membrane system called grana
- (D)
  Their inner membrane contain folds called cristae

Subjective

Source code: 26(N) · Printed marks: 68 · Time: 2.40 Hours

NOTE: Write same question number and its parts number on answer book, as given in the question paper.
2. Write answers of any eight parts.
3. Write answers of any eight parts.
4. Write answers of any six parts.
NOTE: Write answers of any three questions.

SECTION-I

Q2(i)
What is the significance of Biodiversity and Classification in Biology?
(2 marks)
Q2(ii)
Give the names of any two diseases caused by Protists.
(2 marks)
Q2(iii)
Differentiate between primary and secondary Cell wall.
(2 marks)
Q2(iv)
What are Svedberg(s) Values?
(2 marks)
Q2(v)
Which organelle is called shipping department of a cell?
(2 marks)
Q2(vi)
Differentiate between Apoplast and Symplast Pathway.
(2 marks)
Q2(vii)
How intercalary meristem is different from apical meristem?
(2 marks)
Q2(viii)
Give functions of vascular and cork cambium.
(2 marks)
Q2(ix)
Differentiate the hypotonic and hypertonic solutions.
(2 marks)
Q2(x)
Why the heart is usually felt to be on the left side? Justify it.
(2 marks)
Q2(xi)
Give the duration of diastole, atrial systole and ventricular systole in one’s complete heart beat.
(2 marks)
Q2(xii)
What is the use of instrument sphygmomanometer?
(2 marks)
Q3(i)
Write importance of Villi.
(2 marks)
Q3(ii)
How Rigor Mortis occurs?
(2 marks)
Q3(iii)
Write about AIDS and its causative agent.
(2 marks)
Q3(iv)
Give two examples of fibrous joints.
(2 marks)
Q3(v)
Differentiate between coenzyme and prosthetic group.
(2 marks)
Q3(vi)
What are floating ribs?
(2 marks)
Q3(vii)
How presence of enzyme effects the activation energy of reaction?
(2 marks)
Q3(viii)
Differentiate between compact and spongy bone.
(2 marks)
Q3(ix)
What is Antiperistalsis?
(2 marks)
Q3(x)
Give regions of active site along with their function.
(2 marks)
Q3(xi)
Define Bolus.
(2 marks)
Q3(xii)
Which type of food is digested with the help of bile and how?
(2 marks)
Q4(i)
What is Glycosidic Bond? Give example.
(2 marks)
Q4(ii)
What is the Central Dogma of molecular biology?
(2 marks)
Q4(iii)
How does the sequence of amino acids in primary structure of protein determined?
(2 marks)
Q4(iv)
Differentiate between action spectrum and absorption spectrum.
(2 marks)
Q4(v)
What is the function of FAD in cellular respiration?
(2 marks)
Q4(vi)
How would you differentiate between alcoholic and lactic acid fermentation?
(2 marks)
Q4(vii)
How does the nasal cavity filter the inhaled air?
(2 marks)
Q4(viii)
What is the role of intercostal muscles during breathing?
(2 marks)
Q4(ix)
What is the function of surfactant in Alveoli?
(2 marks)

SECTION-II

Q5(a)
Discuss Phylum Platyhelminthes.
(4 marks)
Q5(b)
Describe the flow of blood through heart as regulated by the valves.
(4 marks)
Q6(a)
Describe the structure and functions of stomach in digestion.
(4 marks)
Q6(b)
Explain the structure and functions of Peroxisomes.
(4 marks)
Q7(a)
Sketch the reactions showing Krebs cycle (no explanation required).
(4 marks)
Q7(b)
Explain transport of $C O_{2}$ in human body.
(4 marks)
Q8(a)
Write note on Cytoplasm and Genetic material of Bacteria.
(4 marks)
Q8(b)
What are joints? Explain three major types of joints on the base of their movement.
(4 marks)
Q9(a)
What are Acylglycerols? Describe the structural components of Triglycerides.
(4 marks)
Q9(b)
Discuss in detail the role of vascular cambium and cork cambium in thickness of plant stem.
(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
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(N) · Printed marks: 68 · Time: 2.40 Hours