NEB Question Browser

How does plasmolysis alter the osmotic process across the cell membrane?

Draw a labelled diagram of T.S. of a typical dicot stem and mention any two anatomical characteristics of its vascular bundles.

What is the figure about, and why is it important?

Compare and contrast between simple and compound epithelium.

What is blastula? How is blastula formed during development of frog? Why micromeres divide faster than the macromeres?

What is the substance sampled during amniocentesis?

How does aerobic respiration differ from anaerobic respiration? Describe the cycle that involves breakdown of two carbon compound Acetyl CoA in aerobic respiration with necessary diagram.

What is the difference between the parts A and B? (any two)

Label the parts C and D

How do organic fertilizers contribute to sustainable agricultural practices compared to chemical fertilizers, and why is prioritizing their use advantageous?

“Genes are inherited in new combination due to crossing over in the gametes.” Interpret this statement with its mechanism and necessary diagrams. Write the significance also

Apply your understanding of various processes involved in the ascent of sap in cohesion tension theory for the maximum uptake of water in plants.

Discuss the causative agent, mode of transmission and symptoms of Typhoid. Mention its control measures.

Human heart is myogenic. Justify this statement. Discuss origin and conduction of heart beat. How is heart beat regulated?

How would you explain various protective layers of human brain? What do you predict in the body when cerebro-spinal fluid is absent? Compare cerebrum and cerebellum.

Collenchyma and sclerenchyma are two types of simple permanent tissues of plants. Draw a labelled diagram of each. Distinguish them on the basis of structure and function.

How do chromosomal mutations affect organisms? Elucidate the types of chromosomal mutation. Why do mutations play significant roles in agriculture and in evolution?

Describe the process which occurs during the photosystem-I and photosystem-II of the light reaction of photosynthesis, up to the formation of NADPH₂. Why is this process referred to as non-cyclic? How is it linked to the dark reaction?

Define health disorders. Explain various cardio-vascular disorders in human beings.

The crossing over is the interchange of chromatid segments between the two homologous chromosomes. Which of the following is the most likely explanation for high incidence of crossing over between two genes?