CBSE Class 11 Biology - 2 Marks Important Questions


Class 11 plays a major role in a student’s life. In CBSE class 11 biology, various important topics are introduced that are used to understand the higher concepts in class 12. It should be noted that questions from most of these topics are also included in the NEET exam.

To help the students prepare effectively for the short answer type questions, some important 2 marks questions for CBSE class 11 biology exam are given here.

Some important points are given below regarding 2 marks questions. Read these points and then check the questions.

  1. 6 questions are included in the short answer-I section i.e. 2 marks section.
  2. 1 question in this section includes an internal choice.
  3. 2 marks questions need to be short and to the point.
  4. The answer should be preferably written in 1 sentence.
  5. Writing too many irrelevant points are not considered while marking.

Students can also check important questions for class 11 biology and get various important questions from all the individual chapters.

Important 2 Marks Questions For CBSE Class 11 Biology Exam

Question 1:

What connects the left and right hemispheres of cerebrum? Name the four lobes into which each hemisphere is divided.

Question 2:

Differentiate between neurons and neuroglia.

Question 3:

Differentiate between heartwood and sapwood.

Question 4:

What are nuclear pores? State their function.

Question 5:

Differentiate loose and dense connective tissue.

Question 6:

Name the plant hormone that exists in gaseous form? Also, state its function.

Question 7:

Explain the structure and function of plasmodesmata with the help of a diagram.

Question 8:

What do you understand by hydrostatic skeleton?

Question 9:

What are the differences between runner and stolon.

Question 10:

What are micelles? Give their uses.

Question 11:

Draw the structure of

a) adenine

b) adenylic acid

Question 12:

Why there arises a need to classify organisms?

Question 13:

Distinguish between prostomium and peristomium.

Question 14:

Illustrate law of limiting factors with suitable examples.

Question 15:

Explain the role of Na-ion in the generation of Action potential.

Question 16:

What is respiratory quotient? What is its value for fats?

Question 17:

What are the important features of cnidarians?

Question 18:

What is Osmoregulation?

Question 19:

Name the enzymes of citric acid cycle present in inner mitochondrial membrane.

Question 20:

Highlight the significance of Juxta-glomerular apparatus (JGA) in kidney function? State in brief.

Question 21:

What is molecular homology? Explain with an example.

Question 22:
What is heterospory? Give two examples.

Question 23:

What are functions of the following:

(a) Body wall in earthworm

(b) Malpighian tubules

Question 24:

Who is called the Father of Taxonomy? Name any two other botanists who are known for their contribution to the taxonomy field.

Question 25:

What are the differences between diploblastic and triploblastic animals?

Question 26:

Why mitosis is called equational division?

Question 27:

What is water potential?

Question 28:

What is heterospory?

Question 29:

What is meant by modification of root?

Question 30:

What is placentation?

Question 31:

Write the differences between plant cytokinesis and animal cytokinesis.

Question 32:

Why the colour of a leaf kept in dark turns yellow or pale green from its original colour.

Question 33:

What is plasmolysis?

Question 34:

Write the differences between C3 and C4 pathway.

Question 35:

Write any two economic importances of algae.

The questions given here are from varied CBSE class 11 chapters and might be included in the exam too. It is also suggested to check CBSE question papers for class 11 biology to get acquainted with the type, pattern and difficulty of the questions generally asked in the class 11 exam.

Stay tuned with BYJU’S for more assistance on biology class 11 preparation.



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