Shaiwal 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.

• Which one is an example of Xerophytes?

(A) Brassica
(B) Rose
(C) Mango
(D) Cactus

• Animals inhabiting environment with acute shortage of water excrete:

(A) Ammonia
(B) Uric Acid
(C) Urea
(D) Allantoin

• Movement of plant organs in response to touch is called:

(A) Geotropism
(B) Chemotropism
(C) Hydrotropism
(D) Thigmotropism

• The number of lumber vertebrae in human beings is:

(A) 5
(B) 7
(C) 9
(D) 12

• Which of the following plant hormone promotes fruit ripening.

(A) IAA
(B) GA3  
(C) Ethene  
(D) ABA

• Germinating pollen grains are rich source of

(A) Cytokinis
(B) Gibberellins
(C) Auxin
(D) Abscisic Acid

• Treponema Pallidum in humans causes.

(A) Gonorrhea
(B) Syphilis
(C) Genital Herpes
(D) AIDS

• Cleavage of fertilized egg results in the formation of rounded closely packed mass of blastomeres called:

(A) Blastula
(B) Morulla
(C) Neurula
(D) Gastrulla

• Human cells contain how many different kinds of tRNA molecules.  

(A) 41
(B) 42
(C) 43
(D) 45

• In yeast full mitotic cycle is completed only in:

(A) 50 minutes
(B) 70 minutes
(C) 80 minutes
(D) 90 minutes

• During prophase I of meiosis synapsis starts at:

(A) Leptotene
(B) Zygotene
(C) Pachytene
(D) Diplotene

• Different alleles of the gene that are both expressed in heterozygous condition are called.

(A) Over dominance
(B) Codominance
(C) Epistasis 
(D) Pleiotropy

• The cells which cling to art egg after ovulation occurs are called.

(A) Ovarian cells
(B) Follicle cells
(C) Cumulus cells
(D) Uterine cells

• The essay on the origin of species was written by:

(A) Lamarck
(B) Malthus
(C) Lyell
(D) Darwin

• All the populations within an ecosystem are known as:

(A) Community
(B) Species
(C) Food web
(D) Pioneers

• In temperate deciduous forests, average rain fall is:

(A) 750 - 1500 mm
(B) 650 - 1200 mm
(C) 550 - 1000 mm
(D) 450 - 800 mm

• The Earth surface covered with water is about:

(A) 30 %
(B) 50 %
(C) 70 %
(D) 90%

INTER PART 2 Sargodha BOARD 2017
(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. Attempt any eight parts.

• Define Excretophores and anhydrobiosis
  
• What are Physiological adaptation of heat exchange in animals?
  
• What are flame cells? Write their function.
  
• What are characteristics and functions of Sclerenchyma cells?
  
• Define Tropic movements write the names
  
• Differentiate between Active and Passive flight.
  
• What are identical twins? How are they formed?
  
• Define Phytochromes Give their types.
  
• Differentiate between prairies and Savana
  
• Write names of plants and animals of temperate deciduous forests
  
• Differentiate between deforestation and Aforestation.
  
• What are causes of greenhouse effects?

3. Answer briefly any eight parts from the followings:-

• Differentiate between stimulus and response
  
• Give two commercial applications of 2,4D
  
• Differentiate between Corpus Callosum and Cerebral Cortex.
  
• Differentiate between homozygote and heterozygote.
  
• Define gene and allele.
  
• What is test cross? Give its significance
  
• What are restriction enzymes? Give example
  
• Define hybridization. What was its use?
  
• Differentiate between probe and plasmid
  
• Define commensalism. Give example
  
• Differentiate between Autecology and Synecology.
  
• Define the terms Niche and Habitat.

4. Answer briefly any Six parts from the followings

• Define morula stage of development.
  
• Write down the names of different kinds of cytoplasms with their functions
  
• What do you know about nucleosomes?
  
• What is the Contribution of Erwin Chargaff?
  
• Differentiate Apoptosis from Necrosis?
  
• How Chiasmata formation occurs?
  
• What is the function of RNA polymerase in transcription?
  
• What are the Contributions of Cuvier in evolution?
  
• Discuss endosymbiotic hypothesis

SECTION-II 

NOTE: - Attempt any three questions.

Q.5.
(a) Discuss the temperature classification of Animals.
(b) What is Nitrogen Cycle? Explain the various steps in Nitrogen Cycle.

Q.6.
(a) What are joints? Describe their types.
(b) How did Meselson and Stahl show that DNA replication is semi-conservative?

Q.7.
(a) Define and Explain the Diffused Nervous system in Planaria.
(b) Explain about, "The Deforestation and Aforestation."

Q.8.
(a) Give the comparison between Asexual and Sexual reproduction.
(b) Define multiple allels. Explain it with ABO blood group System of man.

Q.9.
(a) What is Regeneration? Explain it with the help of examples in different groups of Animals
(b) Discuss Lamarck's Theory of evolution.