Past Papers of Biology 10th Class Lahore Board 2015 - Group I

Past Papers of  Biology 10th Class Lahore Board 2015
LAHORE BOARD 2015 10TH CLASS PAST PAPER
BIOLOGY Time Allowed: 15 Minutes
PAPER-II (Objective Type) GROUP-I Max. Marks: 12

1. Sources of variations in the organisms are:
(A) Crossing Over
(B) Mutation ✓
(C) Both A and B
(D) Mitosis

2. Inter-relationship between Organisms and environment is:
(A) Mycology
(B) Physiology
(C) Ecology ✓
(D) Morphology

3. The number of drug addicts in Pakistan is currently estimated to be about
(A) 1000,000
(B) 800,000
(C) 600,000
(D) 425,000 ✓

4. When was the work on Genetic Engineering started:
(A) 1930
(B) 1940
(C) 1944
(D) 1970 ✓

5. Which disease is not related to lungs:
(A) Asthma ✓
(B) Emphysema
(C) Myopia
(D) Pneumonia

6. The branch of Biology in which we study about inheritance is called:
(A) Microbiology
(B) Physiology
(C) Genetics ✓
(D) Ecology

7. Who is the writer of Encyclopeadia “Al-Tasrif’:
(A) Abu-Al-Qasim ✓
(B) Al-Farabi
(C) Jabir-bin- Hayan
(D) Aristotle

8. Normally external fertilization occurs in:
(A) In the body
(B) Air
(C) Water ✓
(D) All of these

9. The Cochlea is present in:
(A) External Ear
(B) Middle Ear
(C) Internal Ear ✓
(D) None of these

10. When the human body has low amount of water, then Pituitary Gland secrets:
(A) Vessopressin
(B) Insulin
(C) TSH
(D) Oxytocin

11. The drugs used to reduce the pain are known as:
(A) Antibiotics
(B) Antiseptics
(C) Sedatives
(D) Analgesics ✓

12. An adult person skeleton has hard bones:
(A) 406
(B) 306
(C) 206 ✓
(D) 106

Past Papers of  Biology 10th Class Lahore Board 2015

BIOLOGY (New Scheme) Time Allowed: 2:45 hour
PAPER - II (Essay Type) GROUP -1 Max. Marks: 63 (PART-1)

2. Write short answers to any SIX (6) questions: (12)

(i) Differentiate between Breathing and Respiration.

(ii) Write the structure and function of Alveolus.

(iii) Give two bad effects of smoking.

(iv) Differentiate between Osmoregulation and Thermoregulation.

(v) Write the names of different parts of human Urinary System.

(vi) When Kidneys form Hypotonic and Hypertonic Urine?

(vii) Define Stimuli and Response.

(viii) How brain is protected?

(ix) What is Paralysis? Write its symptoms.

3. Write short answers to any FIVE (5) questions: (10)

(i) Write two functions of bones.

(ii) Describe the role of Ligaments.

(iii) What is Rheumatoid Arthritis? Write its symptoms.

(iv) What is Embryo? Write its parts.

(v) Differentiate between Internal and External Fertilization.

(vi) What are discontinuous variations? Give examples.

(vii) What are hinge joints? Write two examples.

(viii) What is the Theory of Special Creation?

4. Write short answers to any FIVE (5) questions: (10)

(i) Write a short note on Ecological Pyramids.

(ii) Differentiate between Nitrification and Denitrification.

(iii) Define Competition and give example.

(iv) Write any two applications of Fermentation.

(v) Write any two achievements of Genetic Engineering.

(vi) What do you mean by Single Cell Protein?

(vii) Define Sedatives and give examples.

(viii) Write a short note on Mari Juana.

(SECTION-II)

Note: Attempt any THREE questions:

5. (a) How gaseous exchange takes place in plant leaves? 4

(b) How plants remove extra Carbon Dioxide, Oxygen and Water? 3

6. (a) Describe the contributions of Ibnal Hatham in Optics. 4

(b) Describe the structure of Bone. 3

7. (a) Describe the structure of Flower. 4

(b) What is Pollination? Discuss its kinds. 3

8. (a) State Mendel’s Law of Segregation. Explain it with the help of crosses and example. 4

(b) Explain Carbon Cycle. 3

9. (a) Explain four products obtained by using Fermentation. 4

(b) Describe Drug Addiction and associated problems. 3

PART-III (Practical Part)

Note: Attempt any TWO questions.

A
(i) Write down the procedure to show the presence of Tar in Cigarette smoke. Draw the diagram. 3 (ii) What are the effects of Tar on Lungs. ! 2

B
(i) Write down the procedure to demonstrate the effect bf 12 volt D.C. Current on skin muscle of Frog. 3
(ii) What is meant by antagonistic Muscles? Give in example. 2

C
(i) Write down the procedure to investigate the role of Bacteria in the fermentation of milk. 3
(ii) What is Pasteurization? 2