11th Biology Important Questions Tamil/ English Medium

Padasalai 11th Biology Public Exam Important Questions, Answer Keys: Tamil Nadu DGE conducted Biology Public Exam on 23rd March 2020. To get maximum marks students check important questions for Part-1 (Bio-Botany Section -1, 2, 3, 4), Part-2 (Bio-Zoology Section-1, 2, 3, 4) & PTA model question papers.

1 Mark Questions

Question 1: For every CO2 molecule entering the C3 cycle, the number of ATP and NADPH required is

a). 3 ATP +2 NADPH b). 3 ATP + 3 NADPH c). 2 ATP +2 NADPH d). 2 ATP + 3 NADPH

Question 2: Vexillary aestivation is characteristic feature of_____ family

a). Solanaceae b). Brassicaceae c). Fabaceae d). Asteraceae

Question 3: Which of the following represents symport

Question 4: Photosynthetic roots are seen in

a). vanda b). tinospora c). cuscuta d). viscum

2 Mark Questions

Question 1: List the primary functions of leaf

Question 2: A series of events leading to the formation of new cell is known as cell cycle. Give the diagrammatic view of cell cycle

Question 3: Mention the different types of plasmolysis seen in plant cells

Question 4: Tabulate any two differences between cyclic and non-cyclic photo phosphorylation

3 Mark Questions 

Question 1: Explain the different types of placentation with example

Question 2:

  • a).Draw and label the structure of Mitochondria.
  • b). Why mitochondria is called as the power house of a cell

Question 3: A transverse section of the trunk of a tree shows concentric rings which are known as growth rings. What are the significances of studying about these rings

Question 4:

  • a). What is the formula for respiratory quotient ?
  • b). Write any two significance of pentose phosphate pathway

Padasalai 11th Biology Important Questions Tamil Medium 

5 Marks Questions

Question 1). Write the kingdom, phylum