Sunday, 25 August 2019

9th Class Biology Past Papers 2019 Lahore Board

9th Class Biology Past Papers 2019 Lahore Board
If you are searching for matric class 9 biology past papers of the year 2019? here we have shared the 9th Class Biology Past Papers 2019 Lahore Board.

Group-1

Objective Part 
Note: Four possible answers A, B, C and D to each question 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.
Main photosynthetic pigment is
(A) Chlorophyll 'b (B) Chlorophyll 'a
(C) Carotenoids (D) Xanthophylls
Microtubules are made of
(A) Tubulin protein (B) RNA
(C) DNA
(D) Actin protein
An artery that supplies blood to liver
(A) Renal artery (B) Femoral artery
(C) Hepatic artery (D) Coronary artery
An example of multi-cellular organism is
(A) Bacteria
(B) Frog
(C) Amoeba (D) Euglena
 In most plants food is transported in the form of
(A) Glucose
(B) Sucrose
(C) Starch
(D) Lactose
The Italian word "mala means
(A) Bad
B Good
(C) Air blower
In children deficiency of vitamin D causes
a) Osteomalacia (B) Scurvy
c) Night blindness (D) Rickets
Five Kingdom classification system was introduced by:
(A) Schwartz
(B) Margulis
(C) Aristotle
(D) Robert Whittaker
The largest taxon in biological classification is
(A) Phylum
(B) Class
(C) Kingdom
(D) Genus
10- During this phase chromosomes are arranged at equator of cell:
(A) Prophase (B) Metaphase
(C) Telophase (D) Anaphase
11- Pores through which cytoplasm of adjacent cells isconnected
(A) Stomata
(B) Plasmodesmata
(C) Lenticels (D) Cuticle
12 Lipase enzyme acts on molecule
(A) Lipids
B) Starch
(C) Cellulose
d) Proteins

Subjective Part 
PART- I
Write short answers to any FIVE (5) questions: 10
i Define physiology and anatomy.
ii Define population and community.
iii What is the difference between ratio and proportion?
iv Write down any two characteristics of hypothesis..
V Define deforestation and write its causes
vi Write any two characteristics of organisms of kingdom monera
vii Describe briefly sclerenchyma tissues.
viii Define hypotonic and hypertonic solutions
Write short answers to any FIVE (5) questions: 10
i Differentiate between chromatin and chromosomes.
ii How cytokinesis takes place in plants' cells?
iii When and who discovered meiosis?
iv. What is meant by metabolism? Who first of all gave the concept of metabolism?
v Describe metabolic pathways.
vi What is glycolysis?
vii What are anaerobes? Write two examples.
viii Sketch molecular structure of adenosine triphosphate
Write short answers to any FIVE (5) questions: 10
i Define scurvy. Wike its two symptoms
ii How does lodine function in our body?
iii What is the function of pepsin in stomach?
iv Write down four causes of ulcer
v How transpiration rate affects when air movement changes?
vi Write down four name of human heart chambers
vii How pus is produced?
viii Write down two symptoms of dengue fever

PART II

Note: Attempt any TNO questions.
5.a) Explain the relationship of biology to any other four sciences
(b)Describe five differences between prokaryotic and eukaryotic cells

6.(a)Describe the Lock and Key Model of mechanism of enzyme action
(b) What do you mean by photosynthesis?Describe difference between photosynthesis and respiration

7. (a) Describe minerals deficiency diseases
(b) What do you mean by Blood groups? How do we classify blood groups in terms of ABO and Rh blood group.

Group II

Objective Part
Ble answers A, B, C and D to each question The largest taxon in biological classification is 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 Sea star gains its lost arm by:
(A) Budding
(B) Mitosis
(C) Meiosis
(D) Fragmentation
2 Transpiration rate does not depend upon
(A) Leaf diameter (B) Temperature
(C) Air movement (D) CO
Scientific name of onion is
(A) Allium cepa (B) Asterias rubens
(C) Zia maiz
(D) Felis domesticus
The whole series of light reaction is called
(A) S-scheme (B) Z-scheme
(C) L-scheme
D) P-scheme
5 The blood group which contains antigen A
(a) A (b) B
(C) AB (d)O
6 Famous book of Jabir Ibn Hayyan is
(B) Al-Wahoosh
Al-Nabatat (D) Al-Abil
7 In 1831 nucleus was discovered in the cell by :
(A) Robert Hooke (B) Laveran
(C) Robert Brown (D) Louis Pasteur
The malaria is spread in sparrows by
(A) Anopheles (B) Dengue
(C) Aedes
(D) Culex
In 1894 Lock and Key Model was proposed by:
(A) Emil Fischer (B) Daniel Koshland(C) Winhelm
(D) Calvin
10 Cell membrane is mainly composed of
(A) Protein and lipids (B) Cholesterol
(C) Lignin
(D) Chitin
11 Five kingdom classification introduced by
(A) Margulis and Schwartz (B) Torn Efort
(C) Robert Whittaker
(D) Ernes Hackel
12 The disease caused by the deficiency of protein
(A) Goitre
(B) Osteoarthritis
(C) Marasmus (D Color blindness

Subjective part 
PART-I
Write short answers to any FIVE (5) questions: 10
i Define parasitology
i Differentiate between community and population.
iii Write down the name of main steps of biological method.
iv Write two observations of A.F.A King.
v Describe two properties of kingdom fungi.
vi Write down the name of two endangered species in Pakistan.
vii Describe two functions of cell membrane.
viii Write two functions of lysosomes.

3. Write short answers to any FIVE (5) questions: 10
i Define karyokinesis and cytokinesis.
ii Differentiate between apoptosis and necrosis.Differentiate between apoptosis and necrosis.
iii What is meant by alternation of generation?
iv What is meant by active site in enzyme?
v Differentiate between prosthetic group and co-enzyme.
vi Differentiate between aerobic and anaerobic respiration.
vii Write down the three subunits of ATP.
viii Differentiate between photosynthesis and respiration.

Write short answers to any FIVE (5) questions: 10
i What is the role of magnesium in plants?
ii Describe the causes of ulcer
iii What is chyme?
iv Differentiate between saturated and un-saturated fatty acids.
v  How does wind (air in motion) affect the rate of transpiration?
vi What is blood? Write the name of its parts.
vii Differentiate between pulmonary circulation and systemic circulationviii Write the name of organism which transmits dengue
fever

PART - II
Note: Attempt any TWO questions
5.(a) Describe careers in biology of medicine/surgery and horticulture.
(b) Define compound tissues and explain compound tissues found in vascular plants

6.(a) Explain mechanism of enzyme action
(b) Explain mechanism of respiration

7.(a Weber Importance of fertilizers in detail.
b) N How uptake of water and ions take place in plants?

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