Past Papers of Biology 10th Class Gujranwala Board 2015 - Group II

10TH CLASS GUJRANWALA BOARD 2015
BIOLOGY (New Course) Time Allowed: 2:45 Minutes
PAPER-II (Essay Type) GROUP - II Max. Marks: 63

Note: Section-I is compulsory. Answer any THREE (3) questions from Section-II and Answer any TWO (2) questions from Section-III.

(SECTION-I)

2. Write short answers to any SIX questions: (2 x 6 = 12)
(i) What is meant by gaseous exchange?
Also define breathing.
(ii) Differentiate between stomata and lenti cel Is.
(iii) What is the difference between breathing and respiration?
(iv) Define the term “homeostasis”.
(v) Define thermoregulation and excretion.
(vi) What is meant by pressure filtration?
(vii) Define coordination and also write its two types.
(viii) Differentiate between receptors and effectors.
(ix) What is the difference between stimuli and response?

3. Write short answers to any FIVE questions: (2x5 = 10)
(i) Write any two functions of skeletal system.
(ii) What are osteocytes?
(iii) Define osteoporosis.
(iv) Differentiate between sexual and asexual reproduction.
(v) What are endospores?
(vi) Differentiate between genotype and phenotype.
(vii) Write two points of Watson-Crick Model of DNA.
(viii) Define gene.

4. Write short answers to any FIVE questions: (2 x 5 = 10)
(i) Write two examples of predation.
(ii) What is intraspecefic competition?
(iii) What is meant by denitrification?
(iv) Write two benefits of the use of fermenter.
(v) What are plasmids?
(vi) What is meant by recombinant DNA?
(vii) Define antibiotics.
(viii) What is meant by vaccination?

(SECTION-II)

5. (A) Write a note on amphysema and asthma.
(B) Describe in detail xerophyte plants.

6. (A) Describe the structure of outer layer and middle layer of human eye.
(B) What is arthritis? Describe its two types.

7. (A) What do you know about Multiple Fission?
(B) Write down the conditions for seed germination.

8. (A) Who was Mendel? Why Mendel selected pea plant for his experiments?
(B) Explain carbon cycle and draw its diagram.

9. (A) What is meant by single cell protein? What steps world has taken in this regard?
(B) Define vaccines with their importance.

SECTION-III (PRACTICAL PARTY

Note: Attempt any Two parts.

10. (A) (i) Draw the setup of experiment to show the presence of tar in smoke of cigarettes.
(ii) Which compound is formed when carbon dioxide reacts with lime water?

(B) (i) You have put three pieces of sheep’s bone in NaOH, dilute HC1 and water. After an hour observe the changes and record them.
(ii) What are good sources of calcium in the food?

(C) (i) Prepare a list of apparatus for fermentation of flour and write its procedure.
(ii) Omnivores are included in which type of consumers?