10 BIOLOGY LAHORE BOARD 2018 GROUP 1 Past Paper | Learning ki dunya

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10 BIOLOGY LAHORE BOARD
2018 GROUP 1

Encircle the correct Option:  12*1=12

i) Charles Darwin proposed the mechanism of organic
evolution. (Mark 1)

A. 1838

B. 1882

C. 1930

D. 1900

Answer: A. 1838 

 
ii) Non-renewable resources are:                         (Mark 1)

 A. Fossil fuels

B. Wind

C.Water

D. Soil 

Answer A. Fossil fuels

 

iii)  Female reproductive part of the flower is:      (Mark 1)

A. Gynoecium

B. Androecium

C.Sepals

D. Petals

Answer: A. Gynoecium

 

iv) Diazepam is a drug of:                                    (Mark 1)

 

A. Vaccines

B. Sedatives

C.Antibiotics

D. Analgesics

Answer: B. Sedatives 

v) The disease in which destruction of the wall of alveoli occurs: (Mark 1)

A. Asthma

B. Pneumonia

C.Emphysema

D. Bronchitis 

Answer: C. Emphysema

vi) Making a normal pigmentation is an example of (Mark 1):


A. Phenotype

B. Genotype

C.Traits

D. Chromosomes 

Answer: A. Phenotype

vii) Encyclopedia ''Al-Tasrif'' is written by: (Mark 1)


A. Al-Farabi

B. Abu-al-Qasim

C.Ali Ibn-e-Isa

D. Al-Haitham 

Answer: B. Abu-al-Qasim

viii) Example of vegetative propagation by leaves is: (Mark 1)

A. Mint
B. Potato

C.Garlic
D. Bryophyllum 

Answer: D. Bryophyllum

ix) The length of the spinal cord is: (Mark 1)

A. 20 cm

B. 40 cm

C.60 cm

D. 70 cm 

Answer: B. 40 cm

x) The smallest bone in the human body: (Mark 1)


A. Stapes

B. Incus

C.Malieus

D. Vertebra 

Answer: A. Stapes

xi) The enzyme which is used to dissolve blood clots is: (Mark 1)



A. Amylase

B. Pepsin

C.Tripsin

D. Urokinase 

Answer: D. Urokinase

xii) Number of bones in the appendicular skeleton is: (Mark 1)


A. 126

B. 116

C. 136

D. 146

Answer: A. 126

Read 2019 Paper Biology

WRITE THE SHORT ANSWERS OF THE FOLLOWING QUESTIONS (Any Five)

Q.2 i) Explain stomata? (Marks 2)

Q.2 ii) What is alveolus? (Marks 2)

Q.2 iii) Explain thermoregulation. (Marks 2)

Q.2 iv) Define osmosis. (Marks 2)

Q.2 v) Explain renal pelvis. (Marks 2)

Q.2 vi) Explain reflex arc. (Marks 2)

Q.2 vii)What is myopia? (Marks 2)

Q.2 viii) Explain the oval window. (Marks 2)

WRITE THE SHORT ANSWERS OF THE FOLLOWING QUESTIONS (Any Five)

Q.3 i) Differentiate between compact and spongy bone. (Marks 2)

Q.3 ii) What is meant by antagonism? (Marks 2)

Q.3 iii) Write two advantages of vegetative propagation. (Marks 2)

Q.3 iv) Write the functions of hilum and micropyle in the seed. (Marks 2)

Q.3 v) Differentiate between epigeal and hypogeal germination. (Marks 2)

Q.3 vi) Define traits, also give an example. (Marks 2)

Q.3 vii) Differentiate between homozygous and heterozygous genotypes. (Marks 2)

Q.3. viii) What are breeds and cultivars? (Marks 2)

WRITE THE SHORT ANSWERS OF THE FOLLOWING QUESTIONS (Any Five)

Q.4.i) Define community. (Marks 2)

Q.4 ii) What is a food web? (Marks 2)

Q.4 iii) Define alcoholic fermentation. (Marks 2)

Q.4 iv) What is recombinant DNA? (Marks 2)

Q.4 v) What is endorphin and what is its use? (Marks 2)

Q.4 vi) What are pharmaceutical drugs? (Marks 2)

Q.4 vii) What is heroin? What is its effect on CNS? (Marks 2)

viii) For what purpose vaccines are used? (Marks 2)

Attempt any two extensive Questions: 9*2=18

Q.5.a) Describe in detail osmotic adjustment in plants. (Marks 5)

Q.5.b) Write a note on nerve cells or neurons. (Marks 4)


Q.6.a) What is a skeleton? Explain the components of the human skeleton. (Marks 5)

Q.6.b) What is seed germination? What conditions are necessary for the germination of seed? (Marks 4)

Q.7.a) Describe in detail the biotic components of an ecosystem. (Marks 5)

Q.7 b) What are the objectives of genetic engineering. (Marks 4)

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