Biology Question Paper 2082 (Old Question)

Which of the following terms describes pollen tube entry into the embryo sac of ovule through micropyle during fertilization?

Which of the following structures in a plant is primarily responsible for regulating transpiration?

Which of the following genetic disorders is caused by a point mutation?

A botanist observes scattered vascular bundles throughout the ground tissue in a plant stem. What is the most appropriate conclusion?

If a plant is placed in a sealed bell jar with limited oxygen, how will its energy production be affected over time?

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

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

In which process are the linked genes inherited together from one generation to another with parental and non-parental combinations? Explain the process with suitable example

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.

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?

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.

Explain how color blindness is inherited as a sex-linked trait 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.

Scientists 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

Which of the following cell produces histamine and heparin?

Which is the first stage of embryonic development after fertilization in frog's zygote?

After complete digestion of food in duodenum, food changes into milky juice like fluid. What is this state of food called?

Most of the organ transplantations have rejection issue. Which of the following organ transplant has no rejection problem?

What is the term called for the addition of individuals in a population from outside or from another population?

Identify the pair of disease transmitted through contaminated food and water.

“Squamous epithelium is called pavement epithelium.” Give reason. Write any three differences between squamous epithelium and cuboidal epithelium.

Write about neurulation process in development of frog.

Name any two indigenous fish species. Discuss how integrated fish farming is advantageous over traditional fish farming.

Study the given figure of human internal ear and answer the questions that follow:

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.

Mention the causative agent, mode of transmission, symptoms of pulmonary tuberculosis. Highlight various strategies for its prevention. Why is it called “disease of poverty”?

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?

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?