UP Board Important Questions for Class 11 Biology

UP Board Important Questions for Class 11 Biology 

Here we have provided the set of UP Board Class 11 Biology Important Questions that consist of long answers.

The Questions number from 1 to 11 below carries 3 marks each:

Q1. Write a note on neural tissue.

Q2. Write a note on the role of lysosomes in cellular metabolism.

Q3. Explain the role of calcium ions in muscle contraction.

Q4. “All vertebrates are chordates but all chordates are not vertebrates”. Justify the statement.

Q5. Some symbiotic organisms are very good pollution indicators and composed of achlorophyllous and a non- chlorophyllous member. Describe them.

Q6. Write a note on the different types of arrangement of vascular bundles. Differentiate between Polyp and Medusa with examples.

Q7. (a) Why is conditioned reflex considered to be lost with time?

(b) Give two advantages of reflex action in animals.

Q8. Describe the biochemical composition of the plasma membrane with special emphasis on the arrangement of lipid molecules.

Q9. Explain how inhibitors might be important for plant survival.

Q10. Define collenchyma. Describe its role in the structure and other functions in the plant body of herbaceous angiosperms.

Q11. Write a short note on the action spectrum.