BISE Multan · Class 12 · Biology

BISE Multan · Class 12 · Biology · 2026 · First Annual · Group 1

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

Source code: 4461 · Printed marks: 17 · Time: 20 Minutes

OBJECTIVE

Q1(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.
Those plants which have moderate water availability are called:
- (A)
  Xerophytes
- (B)
  Hydrophytes
- (C)
  Mesophytes
- (D)
  Saprophytes
Q1(2)
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.
Opening of flower bud follows:
- (A)
  Photonasty
- (B)
  Epinasty
- (C)
  Hyponasty
- (D)
  Haptonasty
Q1(3)
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.
Fibrous joints are found in:
- (A)
  Skull
- (B)
  Legs
- (C)
  Arms
- (D)
  Chest
Q1(4)
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.
Abscisic acid can be sprayed on tree crops to regulate:
- (A)
  Leaf drop
- (B)
  Shoot drop
- (C)
  Cone drop
- (D)
  Fruit drop
Q1(5)
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.
Nociceptors produce the sensation of:
- (A)
  Touch
- (B)
  Warmth
- (C)
  Pressure
- (D)
  Pain
Q1(6)
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.
Which one of the given is not a parthenogenic fruit?
- (A)
  Banana
- (B)
  Pineapple
- (C)
  Mango
- (D)
  Grape
Q1(7)
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.
Which light favours elongation of cells?
- (A)
  Blue
- (B)
  Red
- (C)
  Violet
- (D)
  Ultraviolet
Q1(8)
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.
The number of chromosomes in mouse is:
- (A)
  40
- (B)
  32
- (C)
  26
- (D)
  06
Q1(9)
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.
The number of histone proteins molecules in a single nucleosome are:
- (A)
  14
- (B)
  10
- (C)
  12
- (D)
  08
Q1(10)
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.
Meiosis generally takes place in plants during formation of:
- (A)
  Gametes
- (B)
  Spores
- (C)
  Zygote
- (D)
  Embryo
Q1(11)
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.
This cross finds out homozygous or heterozygous nature of genotype:
- (A)
  Self cross
- (B)
  Back cross
- (C)
  Test cross
- (D)
  Monohybrid cross
Q1(12)
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.
Bombay phenotype is an example of:
- (A)
  Epistasis
- (B)
  Dominance
- (C)
  Probability
- (D)
  Pleiotropy
Q1(13)
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.
EcoR1 is commonly used as:
- (A)
  Gene
- (B)
  Bacteria
- (C)
  Bacteriophage
- (D)
  Restriction enzyme
Q1(14)
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.
Archaebacteria can tolerate temperatures up to:
- (A)
  $60^{\circ} C$
- (B)
  $90^{\circ} C$
- (C)
  $120^{\circ} C$
- (D)
  $150^{\circ} C$
Q1(15)
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.
Lichen is symbiotic association between a fungus and:
- (A)
  Diatoms
- (B)
  Algae
- (C)
  Angirsperm
- (D)
  Bacteria
Q1(16)
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.
The productivity can be indicated by:
- (A)
  Consumption of $C O_{2}$
- (B)
  Evolution of $C O_{2}$
- (C)
  Consumption of $O_{2}$
- (D)
  Evolution of $N_{2}$
Q1(17)
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.
Utilization of water in industry is:
- (A)
  $70 %$
- (B)
  $80 %$
- (C)
  $85 %$
- (D)
  $10 %$

Subjective

Source code: 27 · Printed marks: 68 · Time: 2.40 Hours

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

SECTION-I

2
Write answers of any eight parts.
Q2(i)
How Vasodilation differ from Vasoconstriction?
(2 marks)
Q2(ii)
What is Blubber? Give its role.
(2 marks)
Q2(iii)
When dialysis is required for kidney patient?
(2 marks)
Q2(iv)
Give significance of sclerenchyma tissues in plants.
(2 marks)
Q2(v)
Why are synovial joints called so?
(2 marks)
Q2(vi)
Give some major functions of skeleton.
(2 marks)
Q2(vii)
What is diploic parthenogenesis?
(2 marks)
Q2(viii)
What is Placenta? Give its role.
(2 marks)
Q2(ix)
What is meant by productivity of an ecosystem?
(2 marks)
Q2(x)
Differentiate between weather and climate.
(2 marks)
Q2(xi)
Define Wildlife. Also give its significance.
(2 marks)
Q2(xii)
What are the causes of ozone layer depletion?
(2 marks)
3
Write answers of any eight parts.
Q3(i)
Write the commercial applications of Gibberellins.
(2 marks)
Q3(ii)
What are the modalities of sensation?
(2 marks)
Q3(iii)
How epilepsy can be characterized and diagnosed?
(2 marks)
Q3(iv)
What is gene pharming? Give example.
(2 marks)
Q3(v)
What is Testicular feminization syndrome?
(2 marks)
Q3(vi)
How blood pressure is multifactorial trait?
(2 marks)
Q3(vii)
How to get a gene?
(2 marks)
Q3(viii)
What is PCR?
(2 marks)
Q3(ix)
Write about coronary artery angioplasty.
(2 marks)
Q3(x)
Compare Biotic and Abiotic components of an ecosystem.
(2 marks)
Q3(xi)
What is meant by MODY? Write its one cause.
(2 marks)
Q3(xii)
What is Commensalism?
(2 marks)
4
Write answers of any six parts.
Q4(i)
What is Meristem?
(2 marks)
Q4(ii)
Differentiate between inhibitory effect and compensatory effect.
(2 marks)
Q4(iii)
Write definition of Karyotype.
(2 marks)
Q4(iv)
What are the components of nucleotide?
(2 marks)
Q4(v)
Differentiate between antisense strand and sense strand.
(2 marks)
Q4(vi)
Write definition of meiosis.
(2 marks)
Q4(vii)
Fertility of a woman is affected with age in terms of genetic disorders. How?
(2 marks)
Q4(viii)
How eukaryotes evolved from prokaryotes according to membrane invagination hypothesis?
(2 marks)
Q4(ix)
What is Hardy-Weinberg Theorem?
(2 marks)

SECTION-II

NOTE: Write answers of any three questions.

Q5
(8 marks)
1. (a)
  Write a note on excretory system of cockroach.
  (4 marks)
2. (b)
  What is cancer? Give the types of tumors. Also explain properties of cancerous cells and reasons.
  (4 marks)
Q6
(8 marks)
1. (a)
  Describe significance of secondary growth.
  (4 marks)
2. (b)
  Write a note on food web.
  (4 marks)
Q7
(8 marks)
1. (a)
  Discuss Reflex Arc and Reflex Action with the help of an example.
  (4 marks)
2. (b)
  Discuss Comparative Embryology and Molecular Biology as evidence of evolution.
  (4 marks)
Q8
(8 marks)
1. (a)
  Discuss Female Reproductive System with labelled diagram.
  (4 marks)
2. (b)
  State and explain “Mendel’s Law of Segregation” in detail.
  (4 marks)
Q9
(8 marks)
1. (a)
  What is “Aging”? How will you explain this process?
  (4 marks)
2. (b)
  What are Transgenic plants? Also write their advantages.
  (4 marks)

Original source references (5)

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

Objective · 4461 · Printed marks: 17 · Time: 20 Minutes
Objective · 4463 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Objective · 4465 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Objective · 4467 · Printed marks: 17 · Time: 20 Minutes : same questions, source numbering preserved separately
Subjective · 27 · Printed marks: 68 · Time: 2.40 Hours