HP Board 11th Class Model Question Paper 2025 Biology

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Model
HIMACHALModel Question
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PRADESH paper
PaperEDUCATION
BOARD OF SCHOOL
Class 11th Biology
2024-2025
Time: 3 Hours
Time : 3 Hrs Maximum Marks: 60 MM : 60

Instruction:- General Instructions:

1. All questions are compulsory.
2. The question paper consists of four sections: A, B, C, and D.
3. Section A contains 12 multiple-choice questions of 1 mark each.
4. Section B contains 10 very short answer questions of 2 marks each.
5. Section C contains 6 short answer questions of 3 marks each.
6. Section D contains 2 long answer questions of 5 marks each.
7. Draw neat and labelled diagrams wherever necessary.

SECTION A: Multiple Choice Questions

1. The reaction centre in PS II has an absorption maximum at
(a) 660 nm (c) 680 nm (b) 780 nm (d) 700 nm (1)

2. The transverse section of a plant shows following anatomical features:
(i) Large number of scattered vascular bundle surrounded by bundle sheath
(ii) Large conspicuous parenchymatous ground tissue
(iii) Vascular bundles conjoint and closed
(iv) Phloem parenchyma absent
Identify the category of plant and its part.
(a) Monocotyledonous stem
(b) Monocotyledonous root
(c) Dicotyledonous stem
(d) Dicotyledonous root (1)

3. Which ion plays a crucial role in muscle contraction by binding to troponin?

a) Sodium b) Potassium c) Calcium d) Magnesium (1)

4. Which hormone is commonly known as the "stress hormone" in plants?

A) Auxin B) Gibberellin C) Abscisic acid D) Cytokinin (1)

5. Identify the lipid structure in the diagram below:
Glycerol backbone
|
|— Fatty acid Chain
|
|— Fatty acid Chain
|
|— Fatty acid Chain

What type of lipid does the diagram represent?

a) Phospholipid
b) Triglyceride
c) Cholesterol
d) Sphingolipid (1)

6. One scientist cultured Cladophora in a suspension of Azotobacter and illuminated
the culture by splitting light through a prism. He observed that bacteria accumulated
mainly in the region of

(a) violet and green light
b) indigo and green light
(c) orange and yellow light
(d) blue and red light. (1)

7 . Persons with 'AB' blood group are called as "Universal recipients". This is due to
(a) absence of antibodies, anti-A and anti-B, in plasma
(b) absence of antigens A and B on the surface of RBCS
(c) absence of antigens A and B in plasma
(d) presence of antibodies, anti-A and anti-B, on RBCs. (1)

8. In the labelled diagram mentioned below, water absorption does not occur in the
labelled part as ………

.A b) B c) C d) D (1)

9. In a cross-section of a root, which layer is directly affected by the presence of
Casparian strips?

A) Epidermis B) Cortex C) Endodermis D) Vascular tissue (1)

10. Select the incorrect statement regarding synapses.

(a) The membranes of presynaptic and postsynaptic neurons are in close proximity
in an electrical synapse.
(b) Electrical current can flow directly from one neuron into the other across the
electrical synapse.

( c) Chemical synapses use neurotransmitters.
(d) Impulse transmission across a chemical synapse is always faster than that across
an electrical synapse.

(1)

Question Nos. 11 & 12 consist of two statements- Assertion (A) and Reason (R).
Answer these questions selecting the appropriate option given below

(a) Both Assertion and Reason are true and Reason is the correct explanation of
Assertion

(b) Both Assertion and Reason are true, but Reason is not the correct explanation of
Assertion

(c) Assertion is true, but Reason is false

d) if both Assertion and Reason are False.

11. Assertion: Ferns require water for fertilisation.
. . Reason: Ferns are amphibians of the plant kingdom. (1)

12. Assertion: Amphibians are cold blooded animals. .
. . Reason : Amphibians aestivate. (1)

13. Define venation. Name its two types. Name the type of venation found in
….MONOCOT plants. (2)

14. Differentiate between Racemose and Cymose inflorescence OR .
. Discuss the Different types of vascular bundles in plants (2)

15. What is a centromere? How does the position of centromere form the basis of .
.. classification of chromosomes. Support your answer with a diagram showing the
.. position of centromere on different types of chromosomes. (2)

16. Why are the mustard flowers called Hypogynous flowers?
.. Define Epigynous flowers. OR .
Why is Apple called False Fruit? Define True Fruit. (2)

17. Name the following terms: a) The energy currency of a cell is …………..
. b)The kitchen of the cell is ……………….…….
c) Why does Cellulose does not change Iodine colour as Starch and Glycogen (2)

18. Which of the heart tissues is called the pacemaker of our heart. Why? (2)

19. Give example(s) of:
(a) Hyperglycemic hormone
(b) Hypercalcemic hormone
(c) Gonadotrophic hormones
(d) hypoglycemic hormone (2)
20. Answer the following:
(a) Which part of the ear determines the pitch of a sound?
(b) Which part of the human brain is the most developed?

(c) Which part of our central neural system acts as a master clock?
d) Which part of the eye has only CONE cells? (2)

21. Draw labelled diagram of Bacteria and label a) Cell wall b) Plasma membrane,
. . c) Mesosome d) Nucleoid OR
Draw labelled diagram of Eukaryotic Cell and label
, a) RER and SER b) Mitochondria c) Golgi Body d) Chromatin (2)

22. What are the Characteristics of five kingdom Classification. (2)

SECTION C( Short Answer )

23.. Differentiate between: a) Eukaryotic cell and prokaryotic cell
b) DNA and RNA (3)

24. Define BINOMIAL Nomenclature . Who proposed it? List down 4
important rules of BInomial nomenclature. (3)

25. Name the plant group also called Naked seed plants. Enlist their 5-6 characters.
OR Name the plant group also called Snakes of Plant Kingdom. Enlist their 5-6 …
………..characters. .
(3)

26. Differentiate between
a)ESSENTIAL AMINO ACIDS AND NON-ESSENTIAL AMINO ACIDS
b) Mitosis and meiosis (3)
27. Match the following Column I and Column II mentioned below :

Column I Column II
(a) Eosinophils (i) Coagulation
(ii) Universal
(b) RBC Recipient
(c) AB Group (iii) Resist Infections
(iv) Contraction of
(d) Platelets Heart
(e) Systole (v) Gas transport
(3)

28. a) Where does the TCA cycle occur in plant cells?
b) Name the substrate molecule used at the start of the TCA cycle?
. . c) How many molecules of NADH, FADH2 and ATP are produced by one
. turn of the TCA Cycle?

OR

a) Where does the Calvin cycle occur in plant cells?
b) Name the acceptor molecule of CO2 in the Calvin cycle? .
c). How many molecules are consumed by one turn of the Calvin Cycle?
NADPH2, and ATP ( 1+1+1=3)

SECTION D LONG ANSWERS

29. a) Explain the transport of Oxygen and CO2 in blood
. b) What is the significance of Counter current Mechanism in Urine . ..
… formation. . , .
….c) Define Micturition .
.. d) Name the Pigment responsible for the yellow colour of Urine.
2+1+1+1= (5)
30. GIVE SCHEMATIC REPRESENTATION OF HATCH and SLACK ’s Cycle.

a) NAME THE PRODUCT A,B,C,D,
b) Name the Plants having this cycle that grow in hot, arid climates.
c) Name the first stable compound formed.
d) Name the special leaf character of these plants . ( 2+1+1+1=5)

================================================================

PREPARED By:

1. VIVEKANAND SHARMA LECT. in BIOLOGY GMSSS PRAGPUR DISTT KANGRA
2. VISHAL ACHARYA, LECT in BIOLOGY GMSSS (GIRLS) NAGROTA BAGWAN

HP BOARD OF SCHOOL EDUCATION DHARAMSHALA
CHAPTER WISE MARKS DISTRIBUTION
CLASS 11th SUBJECT: BIOLOGY TOTAL MARKS: 60
Sr. Total
Chapters
No Marks
Living World

Biological Classification
I Diversity of Living Organisms 12
Plant Kingdom
Animal Kingdom

Morphology of Flowering plants

Structural
Anatomy of Flowering plants
II Organisation in Plants and 8
Animals
Structural Organization in Animals

Cell: The Unit of Life

III Cell: Structure and Function Biomolecules 11

Cell Cycle and Cell Division

Photosynthesis in Plants

IV Plant Physiology Respiration in Plants 14
Plant Growth and
Development

Breathing and Exchange of Gases

Body Fluid and its Circulation

Excretory Products and their
Elimination
V Human Physiology 15
Locomotion and Movement

Neural Control and
Coordination

Chemical Control and
Integration

Total 60

BLUEPRINT FOR MCQs
S No Name of Unit Number of Questions

1 Concept Based/Direct Questions 2

2 Understanding & Knowledge Based 3

3 Higher Difficulty Level 3

4 Assertion & Reason 4

TOTAL 12

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