ASSEB Class 11 Biology 2023 Question Paper [H.S 1st Year Biology Science Question Paper]

AHSEC Class 11 Biology Question Paper 2023 – Assam Board Science Question Paper 

Are you looking for the ASSEB erstwhile AHSEC Class 11 Biology Question Paper 2023 for the Assam Board Science stream?

Here, we have a simple analysis of the HS 1st Year Biology Question Paper 2023 in PDF under the Assam Higher Secondary Education Council (AHSEC), now known as the Assam State School Education Board (ASSEB).

The Assam Board Class 11 Biology Previous Year Question Paper 2023 is a useful resource for students preparing for their ASSEB Division-I board exams. It helps students understand the exam pattern, marks distribution, and important topics. By practicing this paper, students can improve their preparation and perform better in exams. Basically this Question Paper is based on Old Pattern but helpful for Theory part of Class 11 Biology Exam.

This question paper follows the new exam pattern and can be helpful for ASSEB Class 11 Science students of the Assam Board.

2023

BIOLOGY

(Theory)

Full Marks: 70

Pass Marks: 21

Time: 3 hours

The figures in the margin indicate full marks for the questions

Use separate Answer-scripts for Part-I (Botany) and Part-II (Zoology)

PART - I

(Botany)

(Marks: 35)

1. Write the answer of the following briefly: 1x 5=5

(a) What is binomial nomenclature?

(b) What is prothallus?

(c) Name one red algae.

(d) What is called by meristem?

(e) What is hydroponics?

2. Write short answer of the following: 2x5=10

(a) What are the five kingdoms of living world?

(b) Write the characteristics of prokaryotic cell.

(c) Mention the two functions of corolla.

(d) Name the various types of activation.

(e) What are the directions of translocation?

3. Write about the various modifications of stem. 3

4. Mitochondria are powerhouse of the cell.' Explain it. 3

5. Draw and describe the internal structure of chloroplast. 4

Or

Draw and describe the structure of a seed.

6. Distinguish between the following (any two): 3x2=6

(a) Heartwood and sapwood

(b) Xylem and phloem

(c) Taproot and fibrous root

7. Write short notes on the following (any two): 2x2=4

(a) Thylakoid

(b) Cell wall

(c) Active transport

PART-II

(Zoology)

(Marks: 35)

1. Fill in the blanks of the following (any five): 1×5=5

(a) Porifera is a group of animals which does not having _______system.

(b) Fertilization results in the formation of _______.

(c) Urinary bladder is not present in _______.

(d) Body of sea anemones is ________symmetry.

(e) Nissl bodies are found in ______.

(f) Enzymes act on protein is called ________.

(g) Vasopressin is secreted by ______.

2. Write very short answer of the following (any four) 1×4=4

(a) What are the cellular components of blood?

(b) What is destruction of Hb?

(c) What is bile?

(d) Define essential amino acid.

(e) What are the actin and myosin?

(f) What is carbon monoxide poisoning?

(g) Give one example of competitive inhibitor.

3. Distinguish between the following (any two): 2x2=4

(a) Blood and lymph

(b) Prophase of mitosis and prophase of meiosis

(c) Coenzyme and cofactor

(d) Breathing and respiration

4. Answer the following briefly (any three): 2x3=6

(a) Write the four characteristics of arthropods.

(b) What are the factors influencing oxygen and carbon dioxide transport in the blood?

(c) Write the functions of RBC.

(d) What are the main excretory substances?

(e) Mention the types of cellular movements.

(f) What is reflex action? Give one example.

5. Write short notes on the following (any two): 3x2=6

(a) Thyroid stimulating hormone (TSH)

(b) Nucleolus

(c) Neuron

(d) Digestive enzyme

6. Describe the process of digestion of food. 5

Or

Describe the structure and functions of human heart with diagram. 1+2+2=5

7. Classify proteins with examples. 2+3=5

Or

Describe the structure and function of nephron with diagram. 1+2+2=5

-00000-

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