XII-Zoology Karachi Board

ZOOLOGY -XII
Q.1 (A). Describe the structure of Nephron and explain the regulatory functions of Kidney?
OR
Write the structure and function of different parts of the Human Brain.
OR
Describe in detail the process of locomotion in protozoa with the help of diagrams.
OR
Describe the process of locomotion in Hydra, Planaria, Earth Worm and Star Fish.
Q.1 (B). Explain Unguligrade and Digitigrade locomotions.
OR
Briefly describe the hydrostatic Skeleton.
OR
What are the conditions necessary for locomotion.
OR
Write notes on the following
Peripheral Nervous System (PNS)
Striated Muscles
Dialysis
Hinge Joint
Q.1 (C). What is the difference between striated and Non-Striated Muscles? Describe the structure of Striated Muscles in detail with the help of diagrams.
Q.1 (D). Fill in the blanks with the correct answers
i. Anaemia is the __________ disorders.
ii. Albinism is the __________ disorders.
iii. The cleavage in a chick is irregular and of __________ type.
iv. The human population is growing at the rate of __________ per year.
v. The movement towards the stimulus is called __________.
vi. The study of Abnormal Development is called __________.
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Q.2 (A). What is Joint? Describe the different kinds of a Joint found in human Skeleton. Explain the mechanism of meveable joint with the help of a diagram.
OR
Define Innate and Learned Behaviour. Describe various types of learning behaviour.
Q.2 (B). Define Aging. Explain the causes of Aging.
OR
What are common skeleton-related diseases in man? Explain any two of them.
OR
Differentiate between External Fertilization and Internal Fertilization.
OR
Name different types of Asexual Reproduction. Explain any ONE of them.
Q.2 (C). Write notes on the following.
Locomotion in Cockroach
Abnormal Muscle Contraction
Lactation
Evolution of Nervous System
Q.2 (D). Choose the correct answer for each from the given options.
i. The gas responsible for depletion of Ozone is
Oxygen
Carbon Dioxide
Nitrogen
Chlorine
ii. The cavity of Gastrula is
Archenterons
Blastocoel
Coelom
Gastrocoel
iii. The first cloned sheep was given the name
Bolly
Jolly
Dolly
None of them
iv. The thick filament of a Striated muscle is made up of
Actin
Albumin
ATP
Myosin
v. Malpighain tubules are the excretory organs of
Earthworm
Hydra
Cockroach
Planaria
vi. The Cylic AMP serves as
First Messenger
Second Messenger
Third Messenger
Fourth Messenger
Q.3 (A). Explain in detail the Male Reproductive System in Man and draw neat and labeled diagram.
OR
Define Sexual Reproduction. Describe the human female Reproductive System. Draw neat and labeled diagram of the system.
OR
Describe with the help of diagram the changes in Ovary and the Uterus during Menstrual cycle.
Q.3 (B). Explain in Parkinson's and Alzheimer's diseases.
OR
Discuss any Three types of Nervous Disorder or Sexually Transmitted Diseases.
OR
Write down the role of Pituitary gland in female reproductive cycle.
OR
Write a brief note on Gonorrhea and AIDS.
OR
What types of hormones are produced by human placenta.
Q.3 (C). Write a note on wild life and explain briefly endangered species.
Q.3 (D). Write "True" or "False" for the following statements.
i. The deficiency of vitamin "B" causes Scurvy.
ii. Smog causes irritation to lungs and eyes.
iii. Memory is stored in mid-brain
iv. Cortisole is called emergency hormone
v. Tatat is palindrome
vi. About 5% stones are formed in the Kidney from Uric acid.
Q.4 (A). Describe Lamarck's Theory of Evolution with examples and state the objections to it.
OR
Define Gastrulation. Describe the development of a chick up to the formation of three germinal layers with the help of diagrams.
OR
Describe the Carbon, Hydrogen and Oxygen Cycles in nature with the help of a graphic diagrams.
Q.4 (B). Define a Neutron and write down the names of different types of Neutron.
OR
Draw only the labeled diagram of L.S of a hen's egg.
OR
Give the names and functions of the hormones secreted by Pituitary gland.
OR
Write notes on the following
Thyroid Gland
DNA finger Printing
Six disorders of Abnormal Development
Food chain & Food Web
Symbiosis and Commensalism
Test Tube Baby
Q.4 (C). Describe main changes that take during metamorphosis in Tadpole larva of frog. Explain your answer with the help of diagrams.
Q.4 (D). Fill in the blanks with the correct answers
i. The egg of a bird is of __________ type.
ii. The Human Brain consists of the functional clusters of the cells called __________.
iii. In man there are __________ pairs of spinal nerves.
iv. The body temperature of a man above 98.6°F is termed as __________.
v. Corpus luteum produces __________ hormones.
vi. The hypothalamus is a set of a particular point called __________.
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Q.5 (A). Describe some uses and applications of Biotechnology. What could be its potential hazards?
OR
What are infectious and Parasitic diseases? Write their causes and transmission with examples.
OR
What is Energy? Write down its type. Explain any there types in detail.
OR
Describe the diseases caused by viruses and Bacteria?
Q.5 (B). Write a note on Classic conditioning.
OR
Write a note on evidences from Vestigial organs.
OR
Define Ecosystem. Mention the biotic and abiotic factors of an Ecosystem.
OR
Differentiate between Renewable and Non-Renewable resources of energy.
OR
Draw only the graphic diagram of Nitrogen cycle.
Q.5 (C). What is Gene Therapy? How is it helpful in treating diseases?
Q.5 (D). Match the items of the given columns correctly.
Column "A"
(a) Gliding Joint
(b) Tube Feet
(c) Thyroxin
(d) Milk
(e) Klinefelter's Syndrome
(f) Solar Energy
Column "B"
(i) Renewable Energy
(ii) Male Sexual Defect
(iii) Mammary Gland
(iv) Thyroid Gland
(v) Star Fish
(vi) Vertebrate