Faisalabad BOARD 2017
(Objective Type)
Biology
Time Allowed: 20 Minutes
Maximum Marks: 17
NOTE: You have four choice for each objective type question as A. B. C and D. The choice which you think is correct, fill that circle in front of that question number. Use marker or pen to fill the circle. Cutting or filling two or more circles will result in zero mark in that question. Attempt as many questions as given in objective type questions papers and leave others blank. No credit will be awarded in case. BUBBLE are not filled. Do not solve questions on this sheet of OBJECTIVE PAPER.

• Flame cells are part of excretory system of

1. Cockroach
2. Earthworm
3. Hydra
4. Planaria

• All the collecting tubules of human kidney finally discharge into the

1. Bowman’s Capsule
2. Glomerulus
3. Pelvis
4. Urethra

• The cell walls of sclerenchymatous cells are usually impregnated with

1.  Silica
2.  Pectin
3.  Lignin
4.  Suberin

• Bone forming cells are known as

1. Osteoblasts
2. Osteocytes
3. Osteoclasts
4. Chondroblasts

• In human how many ova are usually discharged from the ovary at one time?

1. 1
2. 2
3. 6
4. 3

• Haploid males produce sperms by mitosis in

1. Hydra
2. Earthworm
3. Honey bee
4. Human

• Mitosis-11 is just like the

1. Amitosis
2. Mitosis
3. Regeneration
4. Replacement

•  The spread Of tumour cells and establishment of secondary areas of growth is called

1. Epistasis
2. Prostasis
3. Pleiotropy
4. Metastasis  

• Alpha cells of pancreas secrete

1. Glucagon
2. Insulin
3. Pancreatic juice
4. Secretin

• The discoidal cap of cells above the blastocoel is called

1. Eetoderm
2. Mesoderm
3. Endoderm
4. Blastoderm

• Each Okazaki fragment is synthesized by

1. DNA polymerase I
2. DNA polymerase II
3. DNA polymerase III
4. DNA polymerase IV

• Hypophosphatemic rickets is an X-linked

1. Dominant trait
2. Recessive trait
3. Codominant trait
4. Over Dominant trait

• Arabidopsis is

1. Heat resistance
2. Water absorbent
3. Totipotent
4. Salt tolerant

• Archaebacteria tolerate temperature up to

1. 10°C
2. 40°C
3. 67°C
4. 120°C

• Lichen is a symbiotic association between a fungus and

1. Gymno sperm
2. Alga
3. Angiosperm
4. Diatom

• Deserts generally occur in region where annual rainfall is less than

1. 25-50 cm
2. 5-10 cm
3. 250-270 cm
4. 15-20 cm

• The total area of the world under cultivation is

1. 9%
2. 10%
3. 11%
4. 12 %

(Subjective Type)
Time 2.40 Hours
Group-I
Maximum Marks: 68

NOTE: - Write same question number and its part number on answer book, as given in the question paper.

2. Write short answers to any EIGHT parts.

1. Differentiate osmoconformers limners from osmoregulators.
2. Write the phenomenon of lithotripsy.
3. How shivering thermogenesis and non-shivering thermogenesis may be differentiated?
4. Define the mechanism of hydrostatic skeleton
5. Write few lines about cardiac muscles.
6. What is the effect of exercise on muscles
7. Differentiate haploid parthenogenesis and diploid parthenogenesis.
8. Brief explain identical twins
9. Write the human impact on coniferous alpine and boreal forests.
10. How many deserts are in Pakistan? Write their names and location.
11. What do reel know about nuclear energy?
12. Explain briefly how pesticides effect the human food?

 3. Write short answers to any EIGHT parts.

1. What is commercial importance of ethane?
2. Differentiate between resting membrane potential and active membrane potential.
3. What is cerebrospinal fluid? Write its function
4. Differentiate between resting membrane potential and active membrane potential.
5. Why is blood group AB called as universal recipient?
6. What is MODY? How it is inherited
7. What is the role of DNA ligase?
8. What is ex-vivo gene therapy? For what purpose it is used.
9. What are primary goals of human genome project?
10. Differentiate between parasite and parasitism.
11. What is difference between parasite and parasitism?
12. How moderate grazing is helpful for ecosystem.

4. Write short answers to any SIX parts.

1. Differentiate between growth and embryonic development.
2. Define embryonic induction.
3. What are Okazaki fragment.
4. Define transcription.
5. Differentiate between codon and anticodon.
6. What is Klinerfelter’s syndrome?
7. Differentiate between benign and malignant tumor.
8. Give the importance of population genetics in evolution.
9. What are hydrothermal vents?

SECTION II

Note: Attempt ant THREE questions.

Q5:

1.  Discuss the role of liver as an excretory organ.
2.   Define nitrogen cycle. Give its three principal stages.

Q6:

1.  Describe the various steps involved in the repairing of broken bones.
2.  How did Hershey and Chase proved that DNA is the hereditary material?

Q7:

1. How is nerve impulse passed from one neuron to another neuron? Explain.
2. Write down the comprehensive note on ozone layer and ozone layer depletion.

Q8:

1.  Give an elaborative account of male reproductive system in human.
2.  What is epistasis? Explain with two example

Q9:

1. Define growth. What are its type? Explain its phases of growth.
2. Write short notes:
   1. Natural Selection
   2. Artificial Selection