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

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-II Max. Marks: 12

1. The correct match for the Fermentation product and organism involved is:
(A) Formic acid Saccharomyces
(B) Ethanol Saccharomyces
(C) Ethanol Aspergillus
(D) Glycerol Aspergillus

2. Reduce the possibility of infection on skin:
(A) Analgesics
(B) Antibiotics
(C) Disinfectants
(D) Antiseptics ✓

3. Genotype in which Gene Pair contains two identical Alleles is called:
(A) Homozygous ✓
(B) Heterozygous
(C) Hemizygous
(D) Homologous

4. Organ responsible for filtering the blood is:
(A) Intestine
(B) Brain
(C) Stomach
(D) Kidney ✓

5. The middle layer of eye is:
(A) Sclera
(B) Retina
(C) Choroid ✓
(D) Cornea

6. Fourth whorl of flower is:
(A) Calyx
(B) Corolla
(C) Androecium
(D) Gynoecium

7. Person with Genotype-ii has blood group:
(A) AB ✓
(B) B
(C) O
(D) A

8. Example of Ectoparasite is:
(A) Ascaris
(B) Entamoeba
(C) Lice
(D) Plasmodium

9. Percentage of Carbon Dioxide in expired air during breathing is:
(A) 16%
(B) 04% ✓
(C) 21%
(D) 0.04%

10. Rhizopus reproduces asexually by:
(A) Binary Fission
(B) Spores formation
(C) Budding
(D) Endospore formation

11. Number of bones in skull is:
(A) 22
(B) 08
(C) 14
(D) 80

12. Part of brain that co¬ordinates muscle movements:
(A) Cerebellum
(B) Pons
(C) Medulla Oblongata
(D) Hypothalamus

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) What are Lenti Cells? Write their functions.

(ii) Why does blood become thick due to smoking?

(iii) Define Alveoli.

(iv) Define hydrophytes with an example.

(v) What is meant by osmosis?

(vi) Write four names of parts of urinary system.

(vii) What is meant by myelin sheath?

(viii) What do you know about signalhood?

(ix) What is meant by somatic nervous system?

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

(i) What is osteoporosis? Give at least one reason for this disease.

(ii) Differentiate between biceps and triceps muscles.

(iii) Differentiate between Gout and Osteoarthritis.

(iv) Differentiate between tissue culture and cloning.

(v) Write down the names of reproductive parts of flower.

(vi) Differentiate between translation and transcription.

(vii) State the Law of Segregation of Mendel.

(viii) What do you mean by Phenotype and Genotype?

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

(i) What is biosphere?

(ii) What do you mean by trophic level?

(iii) Define predation.

(iv) What type of help genetic engineering has provided to control Haemophilia and Thalassemia?

(v) Define glycolysis. '

(vi) Define genetic engineering.

(vii) Define pharmacology.

(viii) Write about some drugs from plants and fungi.

(SECTION-II)

Note: Attempt any THREE questions:

5. (a) What is pneumonia? Describe its causes, symptoms and treatment. 4

(b) Write osmotic adjustments in Hydrophytes and Halophytes. 3

6. (a) Describe in detail the Nerve Cell or Neuron. 4

(b) Explain types of Joints. 3

7. (a) Describe Female Reproductive System of Rabbit. 4

(b) Explain germination of seed, describe its two types. 3

8. (a) Why did Mendel select the sweet pea for his experiment? Write some of its characteristics. 4

(b) Write the names of steps of nitrogen cycle and explain only one. 3

9. (a) Explain basic steps in Genetic Engineering. 4

(b) Differentiate between medicinal and addictive drugs. 3

PART-III (Practical Part)

Note: Attempt any TWO questions.

A (i) Write the procedure of demonstration of the presence of tar in cigarette smoke. 3

(ii) What is meant by Dead Space. 2

B (i) Write the observations of binary fission in Amoeba. 3

(ii) What do you know about stem tuber of potato? 2

C (i) Draw and label a diagram of internal structure of maize grain. 3

(ii) Is there any role of lactic acid fermentation in human body? 2