Biology NEB 2082 question paper

Differentiate between simple permanent tissue and complex permanent tissue on the basis of structure, types, cell composition and functions. [4]

The diagram below illustrates a type of artificial vegetative propagation in an angiosperm. Answer the following questions.

[figure in the original paper]

• i) Identify the type of vegetative propagation and name the parts labelled P and Q. [1.5]
• ii) Briefly explain this type of propagation with an example. [1.5]
• iii) Mention any two applications of this method. [1]

In which process the linked genes are inherited together from one generation to another with parental and non-parental combinations. Explain the process with suitable example. [4] OR How does diffusion differ from osmosis based on the types of molecules involved across a cell membrane ? Explain, how environmental factors influence the rate of diffusion ? [2+2]

How can GMOs be used to address global food security challenges and what are the potential environmental concerns and health risks associated with their use? [2+2]

GROUP: C | Long answer questions | 2 × 8 = 16

"Squamous epithelium is called pavement epithelium". Give reason. Write any three differences between squamous epithelium and cuboidal epithelium. [1+3=4]

Write about neurulation process in development of frog. [4] OR Name any two indigenous fish species. Discuss how integrated fish farming is advantageous over traditional fish farming. [1+3=4]

Study the given figure of human internal ear and answer the questions that follows: [2+2]

[figure in the original paper]

• i) Label part A, B, C, D.
• ii) Write function of A and D.

Renal disorder is the malfunctioning of kidneys. Identify any two risk factors responsible for kidney disorders and suggest any two healthy habits to protect our kidneys. [2+2]

GROUP: C | Long answer questions. | 2 × 8 = 16

How do different photosynthetic pigments contribute to capturing light energy? Explain how cyclic and non-cyclic photo-phosphorylation generate ATP and NADPH, and illustrate these with appropriate charts. [2+3+3]

Explain how color blindness is inherited as a sex-linked traits in humans. Illustrate the inheritance of colour blindness using suitable genetic crosses and analyze the resulting phenotypic outcomes. Based on your analysis, justify why this pattern is referred to as criss-cross inheritance. [2+4+2] OR Scientist proposed different models of DNA replication. Identify the biologically feasible model that occurs during the s-phase of interphase. Explain the mechanism of this replication process, highlighting the role of enzymes, and illustrate with necessary diagrams. [3+5]

GROUP: B | Short answers questions | 4 × 4 = 16

Mention the causative agent, mode of transmission, symptoms of pulmonary tuberculosis. Highlight various strategies for its prevention. Why is it called "disease of poverty" ? [1+2+2+2+1]

Reproduction is a process of continuation of human race. Describe female reproductive system with a well labelled diagram of human being. How would you explain ovulation in female human ? [4+3+1] OR Nephrons are the structural and functional unit of kidney. Illustrate the structure of nephron with a labelled diagram. What would happen if ADH is secreted insufficiently? [4+3+1]

Differentiate between simple permanent tissue and complex permanent tissue on the basis of structure, types, cell composition and functions. [4]

The diagram below illustrates a type of artificial vegetative propagation in an angiosperm. Answer the following questions.

[figure in the original paper]

• i) Identify the type of vegetative propagation and name the parts labelled P and Q. [1.5]
• ii) Briefly explain this type of propagation with an example. [1.5]
• iii) Mention any two applications of this method. [1]

In which process the linked genes are inherited together from one generation to another with parental and non-parental combinations. Explain the process with suitable example. [4] OR How does diffusion differ from osmosis based on the types of molecules involved across a cell membrane ? Explain, how environmental factors influence the rate of diffusion ? [2+2]

How can GMOs be used to address global food security challenges and what are the potential environmental concerns and health risks associated with their use? [2+2]

GROUP: C | Long answer questions | 2 × 8 = 16

"Squamous epithelium is called pavement epithelium". Give reason. Write any three differences between squamous epithelium and cuboidal epithelium. [1+3=4]

Write about neurulation process in development of frog. [4] OR Name any two indigenous fish species. Discuss how integrated fish farming is advantageous over traditional fish farming. [1+3=4]

Study the given figure of human internal ear and answer the questions that follows: [2+2]

[figure in the original paper]

• i) Label part A, B, C, D.
• ii) Write function of A and D.

Renal disorder is the malfunctioning of kidneys. Identify any two risk factors responsible for kidney disorders and suggest any two healthy habits to protect our kidneys. [2+2]

GROUP: C | Long answer questions. | 2 × 8 = 16