Assam Board Class 11 Question Paper 2022 Biology

ASSAM BOARD

QUESTION
PAPER
CLASS 11

Total No. of Printed Pages-8B
22E-BIOL (BOT-Z00)
2022

BIOLOGYY
Theory
Full Marks 70
Pass Marks : 21
Time: 3 hours
The figures in the margin indicate full marks for the questions

Use separate Answer-scrpts Jfor Part-I (Botany)
and Part-II (Zoology)
ALLOTMENT OF MARKS

Part-I:Botany
(Marks: 35)
Q. Nos. 1-4 carry 1 mark each 1x4 4

Q. Nos. 5-9 carry 2 marks each 2x5 10
Q. Nos. 10-13 carry 3 marks each 3x4 12
Q. No. 14 carries 4 marks 4
Q. No. 15 carries 5 marks =5
Total 35

Part-I1 : Zoology
(Marks: 35)
Q. No. 1 carries 1 mark each 1x5 5
Q. No. 2 carries 1 mark each 1x4 = 4

Q. No. 3 carries 2 marks each 2x2 4
Q. No. 4 carries 2 marks each 2x3 6
Q. No. 5 carries 3 marks each 3x2 6
Q. Nos. 6 and 7 carry 5 marks each 5x2 100
Total 35

Total Part-I& Part-II 35+35 70

/160 [ Contd.

2)

PART-I/ ge7 UM
(Botanyy)

(Marks:35)
1. Where are the chlorophylls present in chloroplast? 1

2. Who proposed five-kingdom concept of living world? 1

3. What is herbarium' ? 1

4. Name the cell organelle which has no membrane.

5. What are the significances of meiosis? 2

6. What are the pigments involved in photosynthesis? 2

7. What is cell theory? 2

8. Write what you mean by micronutrient and macronutrient
with examples. 2

9. Write the difference between xylem and phloem. 2

/160

(3

10. Lysosomes are regarded as suicidal bag of cell." Explain. 3

Or / TR
Explain with diagram, the structure of a typical
chromosome.

11. Draw and label different tissues revealed under the
transverse section of dorsiventral leaf. 3

Or /R97
Explain with diagram, the structure of a cell wall.

12. What do you mean by Kranz Anatomy'

Or /RT
Write the differences between heartwood and sapwood.

13. Distinguish between (any one) 3
T9fon (R CIAI 4TR)
(a) Stroma and Thylakoid

b) Light reaction and Dark reaction

2 (c) Diffusion and Osmosis

/160 Contd.

4
14. What do you mean by plant growth regulators? Mention
few roles of auxin. 1+3-4

Or/
Describe the alternation of generation with labelled
A
diagram

Or / 1

What is Lichen? Write the 1+3-4
importance of Lichen.

15. What is Calvin cycle? Describe the different stages ot
Calvin cycle.

Or / 1
What do you mean by light reaction of
photosynthesis?
Write the difference between cyclic photophosphorylation
and non-cyclic photophosphorylation. 1+4-5

Or/T1
What is Krebs cycle? Describe the different stages of Krebs
cycle 1+4-5

/160

5)
PART-II / OA a

(Zoology)

(Marks : 35)

1. Fill in the blanks (any five) 1x5-5

of cell.
(q) Mitochondria is known as

(b) Alkaloids are metabolites.

CADIN'RG
(c)Molecules present in the cell is called

(ad) Echinoderms are symmetrical.

e) Protein part of enzyme is called

Proteins are the polymers of

2. Give very short answers of the following (any fourn: 1x4=4

a) Define cell cycle.

(bl What is axon?

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6)

(c) What is muscular system?

(a) How is oxygen carried in the blood?

e) Which node acts as pacemaker of the heart?

Name one fat-splitting enzyme.

(g) What are neurons?

3. Write the differences between the
following (any two)
2x2-4
O TCAIKA AITO 11R R ( AI )

(a) Blood and Lymph

(b) Bone and Cartilage

(c) Small and Large intestine
F73 P
(d) Exocrine and Endocrine glands

(e) Voluntary muscle and
Involuntary muscle

Essential and Non-essential amino acidds

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7)
4. Answer the following in brief (any three)
2x3-6
ATCT 5Ht fPA ( foP)
(a Write the names of bile pigments.

(b Write about cytoskeleton.

c) Write the four general characters of annelids.

(d) Write about body symmetry.

eMention few biological significances of proteins.

Write a short note on oxygen-haemoglobin
dissociation curve.

5. Write short notes on (any two 3x2-6
CTPI RT ( PTAI O)

(a) Chemical nature of enzyme

b) Nucleus

/160 Contd.

8)
Significance of meiosis

(d) Reflex action

) Nephron

Mechanism of enzyme action

6. Describe the
digestive system of human with diagram.
4+1-5

Or/TRT
Classify the enzymes in TUB system.
TUB fo4 «AHR CaMAETM
7. What is respiration? Describe the different types of
spiration. 1+4-5

Or /
What is chemical coordination? What are the hormones
secreted by thyroid gland? Mention their
functions.
1+2+2-5

/160 22C