Are you looking for LAHORE BOARD GRADE 10 BIOLOGY 2018 GROUP 2 Learning ki dunya Past Paper
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1- The complete map of the human genome was published in: (Mark 1)
A. 1902
B. 2000
C. 2003
D. 2005
Answer:
C. 2003
2- Symbiosis in which both partners get benefit is an example of (Mark 1)
A. Parasitism
b. Mutualism
C. Predation
D. Competition Answer:
B. Mutualism
3. An example of rhizome stem is: (Mark 1)
Potato
Ginger
Onion
Garlic Answer:
B. Ginger
3. E.coli bacterium was made in (Mark 1)
A. 1980
B. 1975
C. 1977
D. 1970
Answer:
C. 1977
4.Which structure plays an important role in pushing the air out of lungs: (Mark 1)
Nasal cavity
Bronchus
Diaphragm
Bronchiole
Answer:
C. Diaphragm
Theory of natural selection was presented by: (Mark 1)
Aristotle
Lamarck
Darwin
Malthus
Answer:
C. Darwin
The maintenance of temperature in the internal human body is called: (Mark 1)
Thermoregulation
Osmoregulation
Respiration
Guttation
Answer:
A. Thermoregulation
Part of embryo makes root: (Mark 1)
Cotyledon
Epicotyle
Radicle
Plumule
Answer:
C. Radicle
Length of the spinal cord is: (Mark 1)
40 cm
30 cm
20 cm
10 cm
Answer:
A. 40 cm
It is the unit of the nervous system: (Mark 1)
Ganglion
Nerve
Neuron
Receptor
Answer:
C. Neuron
Diazepam is: (Mark 1)
Sedative
Hallucinogens
Narcotics
Vaccines
Answer:
A. Sedative
The human skeleton contains a number of bones: (Mark 1)
A. 406
B. 306
C. 206
D. 106
Answer:
C. 206
Write the short Answer of the following Question (any 5)
Q.2 i) Differentiate between glottis and epiglottis. (Marks 2)
Q.2 ii) How does the gaseous exchange occur in leaves and young stems? (Marks 2)
Q.2 iii) Define hydrophytes and give an example. (Marks 2)
Q.2 iv) Write down the method of lithotripsy. (Marks 2)
Q.2 v) What is meant by succulent organs? Give an example. (Marks 2)
Q.2 vi) Write down the function of the occipital lobe. (Marks 2)
Q.2 vii) Differentiate between the sympathetic system and the parasympathetic system. (Marks 2)
viii) What is meant by brain stem? (Marks 2)
Write the short answer to the following Questions (Any five)
Q.3 i) Differentiate between flexion and extension. (Marks 2)
Q.3 ii) What is meant by osteoporosis? (Marks 2)
Q.3 iii) How binary fission takes place in invertebrates? Give an example. (Marks 2)
Q.3 iv) Define endospores, give an example. (Marks 2)
Q.3 v) Write the name of two important parts of angiosperms seed. (Marks 2)
Q.3 vi) Differentiate between breeds and cultivars. (Marks 2)
Q.3 vii) Define Mendel's law of independent assortment. (Marks 2)
viii) What is meant by natural selection? Also, give an example. (Marks 2)
Write the short answer to the following Questions (Any five)
Q4. i) What is global warming? (Marks 2)
Q.4 ii) Define alcoholic fermentation. (Marks 2)
Q.4 iii) Give uses of glycerol. (Marks 2)
Q.4 iv) Give two objectives of genetic engineering. (Marks 2)
Q.4 v) How gene of interest is isolated? (Marks 2)
Q.4 vi) Explain drugs obtained from animals. (Marks 2)
Q.4 vii) Differentiate between antibiotics and disinfectants. (Marks 2)
viii) What are narcotics? (Marks 2)
Part II
Attempt Any two Questions
a) Describe the osmoregulatory role of the kidney. (Marks 4)
b) Explain the structure of neurons. (Marks 5)
a) What is bone? Describe its structure. (Marks 5)
b) Describe the advantages and disadvantages of vegetative propagation of plants. (Marks 4)
a) What is acid rain? Describe its bad effects. (Marks 5)
Q. 7 b) Discuss the role of biotechnology in the field of food and agriculture. (Marks 4)
