CBSE Class 11 Biology Sample Papers

Marks: 25
Duration: 1 hour

Section A: Each Question Carries 1 Mark

Question 1: What is binomial nomenclature? Why is it used?

Question 2: What is syngamy?

Question 3: Define RQ? Write its value?

Section B: Each Question Carries 2 Mark

Question 1: Define: Diffusion, transportation, and apoplast?

Question 2: Write in brief about vernalisation.?

Question 3: What are the proteins? How are they classified?

Question 4: What are cold- blooded and warm blooded animals? Give reasons and examples for each?

Section C: Each Question Carries 3 Mark

Question 1: Write the difference between autotrophic, and heterotrophic nutrition?

Question 2: Define grafting? Why is grafting not possible in monocot steams?

Section D: Each Question Carries 4 Mark

Question 1: Show different life cycle patterns with the help of neat labeled diagram.
a) Haplontic (b) Diplontic (c) Haplo-diplontic

Question 2: Explain the following vertebrates:
a. Osteichthyes
b. Reptilia
c. Cyclostomata