BISE Multan · Class 11 · Biology

BISE Multan · Class 11 · Biology · 2025 · Second Annual · Code 2461

2025 · Second 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: 2461 · 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)
The Ordovician period was present:
- (A)
  300 million years ago
- (B)
  400 million years ago
- (C)
  500 million years ago
- (D)
  600 million years ago
Q1(2)
The melting point of palmitic acid is:
- (A)
  ${63.1}^{\circ} C$
- (B)
  ${63.2}^{\circ} C$
- (C)
  ${63.3}^{\circ} C$
- (D)
  ${63.4}^{\circ} C$
Q1(3)
The reaction rate of enzyme action becomes double for each $\underline{}$ rise in temperature.
- (A)
  $5^{\circ} C$
- (B)
  $10^{\circ} C$
- (C)
  $15^{\circ} C$
- (D)
  $20^{\circ} C$
Q1(4)
In Tay-Sach's disease an enzyme is absent that is involved in the catabolism of:
- (A)
  Proteins
- (B)
  Carbohydrates
- (C)
  Vitamins
- (D)
  Lipids
Q1(5)
The fatigue, loss of appetite and jaundice are the symptoms of Hepatitis:
- (A)
  B
- (B)
  C
- (C)
  D
- (D)
  E
Q1(6)
Escherichi-coli closed circle chromosome measures approximately:
- (A)
  $4000 μ m$
- (B)
  $14000 μ m$
- (C)
  $24000 μ m$
- (D)
  $34000 μ m$
Q1(7)
The actinopod having glassy shell:
- (A)
  Vorticella
- (B)
  Radiobarians
- (C)
  Radiolarians
- (D)
  Radiotarians
Q1(8)
Histoplasmosis is a serious infection of:
- (A)
  Eyes
- (B)
  Skin
- (C)
  Nails
- (D)
  Lungs
Q1(9)
The example of a club moss is:
- (A)
  Porella
- (B)
  Equisetum
- (C)
  Lycopodium
- (D)
  Psilotum
Q1(10)
Enterobius-vermicularis is commonly known as:
- (A)
  Hook warm
- (B)
  Pin worm
- (C)
  Thread worm
- (D)
  Round worm
Q1(11)
The spiders eyes give them $\underline{}$ view of the predators and prey.
- (A)
  Panoramic
- (B)
  Anoramic
- (C)
  Ranoramic
- (D)
  Lanoramic
Q1(12)
In Prokaryotes the chlorophyll is present in:
- (A)
  Stroma of chloroplast
- (B)
  Thylakoid membranes
- (C)
  Granum of chloroplast
- (D)
  Photosynthetic membranes
Q1(13)
Glycolysis is the breakdown of glucose upto the formation of:
- (A)
  Lactic acid
- (B)
  Acetic acid
- (C)
  Pyruvic acid
- (D)
  Carbonic acid
Q1(14)
The intestine of Planaria immediately divides into:
- (A)
  Two branches
- (B)
  Three branches
- (C)
  Four branches
- (D)
  Five branches
Q1(15)
The maximum amount of $O_{2}$ which human blood normally absorbs and carries at sea level is:
- (A)
  $2 m l / 100 m l$
- (B)
  $12 m l / 100 m l$
- (C)
  $16 m l / 100 m l$
- (D)
  $20 m l / 100 m l$
Q1(16)
The lignin and cellulose provides strength to the cell wall of:
- (A)
  Xylem vessels
- (B)
  Phloem
- (C)
  Phloem vessels
- (D)
  Xylem
Q1(17)
The plasma protein constitute $\underline{}$ by weight of plasma.
- (A)
  3–9 percent
- (B)
  5–9 percent
- (C)
  7–9 percent
- (D)
  9–9 percent

Subjective

Source code: 25 · 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)
Define Heat Capacity of Water. Give its significance.
(2 marks)
Q2(ii)
Enlist different locations of enzymes in the cell.
(2 marks)
Q2(iii)
What is effect of enzyme concentration on the rate of enzyme action?
(2 marks)
Q2(iv)
How does an enzyme accelerates a metabolic reaction?
(2 marks)
Q2(v)
What is Nuclear Mitosis?
(2 marks)
Q2(vi)
What are Rusts and Smuts?
(2 marks)
Q2(vii)
Give some characters of Class Oligochaeta.
(2 marks)
Q2(viii)
Brain of Octopus is large. Give its significance.
(2 marks)
Q2(ix)
Why earthworm is called Natural Plough?
(2 marks)
Q2(x)
Give some parasitic adaptations of phylum platyhelminthes.
(2 marks)
Q2(xi)
Why does cyclic phosphorylation occur?
(2 marks)
Q2(xii)
What is oxidative phosphorylation?
(2 marks)
3.
Attempt any eight parts.
Q3(i)
Enlist at least four various geological periods.
(2 marks)
Q3(ii)
How can you preserve milk and milk products?
(2 marks)
Q3(iii)
Draw a labelled diagram of a generalized prokaryotic cell.
(2 marks)
Q3(iv)
What are Polysomes? Write down its role.
(2 marks)
Q3(v)
Illustrate the historical perspective of protoctista.
(2 marks)
Q3(vi)
Describe the mode of nutrition in flagellates.
(2 marks)
Q3(vii)
What do you know about Diatoms?
(2 marks)
Q3(viii)
Describe at least four importances of algae.
(2 marks)
Q3(ix)
Draw a labelled diagram of sporophyte of hornwort.
(2 marks)
Q3(x)
Write down the names of the steps involved in evolution of leaf.
(2 marks)
Q3(xi)
How does blood flow in the valve of fish? (Single circuit heart).
(2 marks)
Q3(xii)
Compare the apoplast with symplast pathway.
(2 marks)
4.
Attempt any six parts.
Q4(i)
What is hepatitis B and why is it called as serum hepatitis?
(2 marks)
Q4(ii)
What is Slime? Give its importance.
(2 marks)
Q4(iii)
How does Drosera intermedia fulfill its protein requirements?
(2 marks)
Q4(iv)
How does earthworm get nutrition?
(2 marks)
Q4(v)
What are Omnivores? Give examples.
(2 marks)
Q4(vi)
What is the role of peroxisome in photorespiration?
(2 marks)
Q4(vii)
Why is thin epithelium of respiratory surface necessary for gaseous exchange?
(2 marks)
Q4(viii)
Write down the role of carbonic anhydrase in the transport of $C O_{2}$ .
(2 marks)
Q4(ix)
Give the causes and effects of Asthma.
(2 marks)

SECTION-II

Attempt any three questions.

Q5(a)
Describe population and community level of Biological organization.
(4 marks)
Q5(b)
Differentiate between lymph capillaries and lymph nodes. Explain major functions of lymphatic system.
(4 marks)
Q6(a)
Describe any four properties of water.
(4 marks)
Q6(b)
Discuss various methods of nutrition in Fungi.
(4 marks)
Q7(a)
Describe the various modes of nutrition in Bacteria.
(4 marks)
Q7(b)
Write a note on evolution of leaf also explain various steps of leaf evolution.
(4 marks)
Q8(a)
What is Binomial Nomenclature? Give its rules, why it is required?
(4 marks)
Q8(b)
Explain light dependent reactions with diagrammatic presentation.
(4 marks)
Q9(a)
Discuss in detail regarding centrioles.
(4 marks)
Q9(b)
How does digestion take place in cockroach?
(4 marks)

Original source references (5)

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

Objective · 2461 · Printed marks: 17 · Time: 20 Minutes
Objective · 2463 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Objective · 2465 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Objective · 2467 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Subjective · 25 · Printed marks: 68 · Time: 2.40 Hours