SET I (2066) - Model Question Paper of Biology Class 12

Question Paper | Biology
Model Question Paper
Subject: Biology (Zoology + Botany)
Year: 2066
For: Science Grade XII

Zoology

1. Give very short answers of following questions any seven 1x7=7

1.1. From where does epithelial cell rise?

1.2. Which vitamin is called antisterility vitamin?

1.3. What is breathing rate in man?

1.4. What do you mean by double circulation?

1.5. Why is urine yellow in colour?

1.6. Which cranial nerve is mixed nerve?

1.7. What do the leydig cells secrete? 

1.8. How is urea formed in liver?

1.9. What are psychedelic drugs?

1.10. What is in-vitro fertilization?

2. Give sort answers of following questions any five 3x5=15

2.1. Write how is CO2 transported?

2.2. Discuss benefits of genetic engineering.

2.3. Describe haversian canal system

2.4. How does liver act as a homeostatic organ? Discuss.

2.5. Name the hormones produced by adrenal gland and state their 

functions.

2.6. Enumerate the problems of population explosion.

2.7. Describe the structure of frog’s gastrula.

3. Give an account of human heart suitable diagram 7.5

OR

Describe human excretory system with necessary diagrams.

4. What are communicable diseases? Discuss the causative agent, symptoms and control major of any one disease you have studied? 8

Botany

1. Give very short answers of following questions any seven 1x7=7

1.1. What is central dogma?

1.2. Define polyploidy.

1.3. How is xylem arrange in dicot and monocot stem?

1.4. Give two examples of main C4- plants

1.5. What is triple fusion?

1.6. Define variation?

1.7. What is osmosis?

1.8. Define the term tissue culture

1.9. Name the hormone responsible for leaf and fruit fall.

1.10. Name dead tissue of the plant body.

2. Give sort answers of following questions any five 3x5=15

2.1. Explain Mendel’s principle of dominance.

2.2. Differentiate between clone and offspring.

2.3. Describe the embryogeny of dicot embryo with necessary deagram.

2.4. What is photosphorylation? Differentiate cyclic photophorylation with non-cyclic photophorylation.

2.5. Mention the importance of tissue culture technology.

2.6. Mention the functions of gibberlins.

2.7. Describe the importance of sterilization in plant tissue culture

3. Describe anatomical features of monocot stem with well labeled diagram. 7.5

OR

Describe light independent steps of photosynthesis and also mention its relation with the light phase.

4. Describe the mechanism of replication of DNA in the eukaryotic cell. 8

Read This Also:

• SET II - Question Paper Model of Biology Class 12
• SET I - Question Paper Model of Biology Class 12
• Question Paper Model - Biology Class 12 | Science
• NCERT Text Book of Biology Class 12 | Download

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