NEB Class 12 Science Biology Question Paper 2080
Section 1 (Botany) - Group A
Rewrite the correct option of each question in your answer sheet.
Hardness of seed coats is due to presence of
Phloem tissue help in
The segment of DNA which can undergoes mutation
Red and white flower are crossed, offspring are all red and then red flower is crossed with white flower then F2 generation will be
Which of the following plants is used as bio-fertilizer.
Section 1 (Botany) - Group B
Give the short answer to the following question.
Describe the anatomical structure of Monocot stem.
OR
What is simple permanent tissue? Explain the structure and function of parenchyma.
In which type of inheritance, genotype and phenotype is 1:2:1. Illustrate with giving example.
Observe the following diagram and answer question given below.
a) Identify the parts A, B, C, and D
b) Explain the structure and function of C and D.
Define micro-propagation. Describe the application of micro-propagation in agriculture.
Section 1 (Botany) - Group C
Give long answer to the following questions.
What is secondary growth? How the meristems are responsible for secondary growth. Discuss. (1+4+3)
What are genetic material? Describe that DNA as genetic material. (1+7)
OR
What is Mendelism? Describe the Mendel's Laws of Inheritance with example. (1+1+6)
Section 2 (Zoology) - Group A
Rewrite the correct answer from the given alternatives.
Dental formula for permanent teeth is
Hamburger phenomenon is related with
The types of frog egg
The process of formation of blood cells in bone marrow is called
The protein present in muscle is
The membrane that cover lung
Section 2 (Zoology) - Group B
Give short answer to the following questions.
Describe structure, location and function of Areolar tissue. (1+1+2)
OR
Describe the structure and function of Liver.
Define ventilation. Write the mechanism of breathing. (1.5+2.5)
Define embryology. Describe the process of spermatogenesis. (1+1.5+1.5)
Section 2 (Zoology) - Group C
Long answer questions.
Study the given figure and answer the following questions:
a. Identify the figure.
b. Label A, B, C and D
c. Write the function of A and B
Carbohydrate, protein and fats should transform into simple, soluble and absorbable forms before absorbed by wall of gut and the process is called digestion. Describe physiology of digestion in man. (4+4)
The human heart pumps blood through the body. Explain the internal structure of heart with well labelled diagram. Define Pacemaker. (3+4+1)
OR
The organ associate with process of respiration are known as respiratory organ. Explain all the parts of respiratory system with well labelled diagram. What would happen to the respiratory tubes when a person has asthma attack. (2+4+2)