Past Papers of Biology 10th Class Lahore Board 2018 Group II

Past Papers of  Biology 10th Class Lahore Board 2018
LAHORE BOARD 2018 10TH CLASS PAST PAPER
BIOLOGY Time Allowed: 15 Minutes
PAPER-II (Objective Type) GROUP-II 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. Length of spinal cord is:
(A) 40 cm
(B) 30 cm
(C) 20 cm
(D) 10 cm

2. Example of rhizome stem is:
(A) Potato
(B) Ginger
(C) Onion
(D) G

3. Human skeleton contains number of bones:
(A) 406
(B) 306
(C) 206
(D) 106

4. Part of embryo makes root:
(A) Cotyledon
(B) Epicotyl
(C) Radicle
(D) Plumule

5. It is the unit of nervous system:
(A) Ganglions
(B) Nerve
(C) Neuron
(D) Receptor

6. The complete map of human genome was published in:
(A) 1902
(B) 2000
(C) 2002
(D) 2005

7. Which structure plays an important role for pushing the air out of lungs:
(A) Nasal cavity
(B) Bronchus
(C) Diaphragm
(D) Bronchiole

8. Diazepam is:
(A) Sedative
(B) Hallucinogens
(C) Narcotics
(D) Vaccines

9. The maintenance of temperature in internal human body is called:
(A) Thermoregulation
(B) Osmoregulation
(C) Respiration
(D) Guttation

10. E. coli bacterium was made in:
(A) 1980
(B) 1975
(C) 1977
(D) 1970

11. Theory of natural selection was presented by:
(A) Aristotle
(B) Lamarck
(C) Darwin
(D) Malthas

12. Symbiosis in which both partners get benefit is example of:
(A) parasitism
(B) Mutualism
(C) Predation
(D) Competition

Past Papers of Biology 10th Class Lahore Board 2018
BIOLOGY (New Scheme) Time Allowed: 2:45 hour
PAPER - II (Essay Type) GROUP -II Max. Marks: 63

(PART-I)

2. Write short answers to any FIVE (5) questions: (10)
(i) Differentiate between glottis and epiglottis. '
(ii) How does the gaseous exchange occur in leave and young stems?
(iii) Define hydrophytes and give an example.
(iv) Write down the method of lithotripsy.
(v) What is meant by succulent organs? Give an example.
(vi) Write down the function of occipital lobe.
(vii) Differentiate between sympathetic system and parasympathetic system.
(viii) What is meant by brain stem?

3. Write short answers to any FIVE (5) questions: 10)
(i) Differentiate flexion and extension. 1 '
(ii) What is meant by osteoporosis?
(iii) How binaiy fission take place in invertebrates. Give an example.
(iv) Define endospores, give an example. ’
(v) Write the name of two important parts of angiosperm seed.
(vi) Differentiate between breeds and cultivars.
(vii) Define the Mendel’s law of independent assortment.
(viii) What is meant by natural selection, also give an example?

4. Write short answers to any FIVE (5) questions:
(i) What is global warming?
(ii) Define alcoholic fermentation.
(iii) Give uses of glycerol.
(iv) Give two objectives of genetic engineering.
(v) How gene of interest is isolated?
(vi) Explain drugs from animals.
(vii) Differentiate between antibiotics and disinfectants.
(viii) What are narcotics?

(SECTION-II)

Note: Attempt any TWO questions:
5. (a) Describe the osmoregulatory role of kidney. 5
(b) Explain the structure of neuron.

6. (a) What is bone? Describe its structure. 5
(b) Describe the advantages and disadvantages of vegetative propagation of plants 4

7. (a) What is acid rain? Describe its bad effects. 5
(b) Discuss role of biotechnology in the field of good and agriculture.