Past Papers of Biology 10th Class Lahore Board 2017 Group I

Past Papers of  Biology 10th Class Lahore Board 2017
LAHORE BOARD 2017 10TH CLASS PAST PAPER
BIOLOGY Time Allowed: 15 Minutes
PAPER-II (Objective Type) GROUP-I Max. Marks: 12

Note: Four possible answers A, B, C and D to each question are given. The choice which you think is correct, fill that circle in front of that question with Marker or Pen ink in the answer-book. Cutting or filling two or more circles will result in zero mark in that question.
1. Pair of spinal nerves are:
(A) 31
(B) 13
(C) 21
(D) 12

2. A sexual reproduction in yeast take place by:
(A) Spore formation
(B) Multiple fission
(C) Binary fission
(D) Budding

3. Number of bones in both feet are
(A) 108
(B) 56
(C) 12
(D) 22

4. The cell results by combining sperm and ovum.
(A) Chromosome S
(B) Genes
(C) Zygote
(D) Nucleus

5. The myelin sheath is secreted by:
(A) Schwann cells
(B) Dendrites
(C) Axon
(D) Nodes of Ranvier

6. Example of co-dominance is:
(A) Blood group B
(B) Blood group A
(C) Blood group AB
(D) Blood group O

7. Gaseous exchange occur in human.
(A) Alveoli
(B) Bronchi
(C) Trachea
(D) Pharynx

8. Penicillin is discovered by:
(A) Edward Jenner
(B) Joseph Lister
(C) Bu-Ali Sina
(D) Alexander Flemming

9. Example of hydrophyte plants is:
(A) Grass
(B) Sea grass
(C) Cactus
(D) Water lily

10. The total amount of loving matter in an ecosystem at any time is called:
(A) Food web
(B) Food chain
(C) Energy
(D) Bidmass

11. E-coil bacterium was made in:
(A) 1980A.D
(B) 1975 A.D
(C) 1977A.D
(D) 1970A.D

12. The alternate forms of gene are called:
(A) Replication
(B) Alleles
(C) Phenotype
(D) Genotype

Past Papers of Biology 10th Class Lahore Board 2017
BIOLOGY (New Scheme) Time Allowed: 2:45 hour
PAPER - II (Essay Type) GROUP -1 Max. Marks: 63 (PART-1)

(PART-I)

2. Write short answers to any Five (6) questions: (10)
(i) Differentiate between acute and chronic bronchitis.
(ii) What is nicotine?
(iii) Define hydrophytes with an example.
(iv) Name two major parts of a nephron.
(v) What is lithotripsy?
(vi) Define co-ordinators with examples.
(vii) Differentiate between sensory and motor neurons.
(viii) What is nerve impulse?

3. Write short answers to any FIVE (5) questions: (10)
(i) Differentiate between hyaline and fibrous cartilage.
(ii) How lower jaw is different in mammals from other lower vertebrates, also give its advantage?
(iii) How duding occurs in corals?
(iv) How plants reproduce by suckers? Give example.
(v) What is cloning?
(vi) Describe two rnajor processes of organic evolution.
(vii) What is “theory of special creation”?
(viii) Name nitrogenous bases found in DNA molecule.

4. Write short answers to any FIVE (5) questions; (10)
(i) Differentiate between intra-specific inter-action and inter specific interaction.
(ii) What is meant by predation? Give an example.
(iii) What is recombinant DNA?
(iv) Define pharmacology.
(v) How biotechnology has helped us in improving the environment?
(yi) What are tetracyclines? Give an example.
(vii) What are sedatives? Give an example.
(viii) What are synthetic drugs?

(PART-II)

Note: Attempt any THREE questions:
5. (a) What in nephron? Describe its structure and also draw labelled diagram. 5
(b) Write the name and functions of lobes of cerebrum. 4

6. (a) Define joint. Describe its different types. 5
(b) Describe four different ways of natural vegetative propagation. 4

7. (a) What is global warming? Describe its causes. 5
(b) Describe basic steps in genetic engineering. 4