AHSEC| CLASS 11| BIOLOGY| QUESTION PAPER - 2018| H.S.1ST YEAR

AHSEC| CLASS 11| BIOLOGY| QUESTION PAPER - 2018| H.S.1ST YEAR

2018
Biology
(Theory)
Times: 3 hours
Full marks: 70
 


Part - I (Botany)

 

1. What is Inflorescence? Mention the special types of Inflorescences with example.       1+2=3

2. Define Transpiration. Write its types.       1+2=3

Or

Explain the graphic representation of Glycolytic process of plant Respiration.            3

3. Who discovered the plant cell?        1

4. What is stomata?        1

5. Why potato is called underground stem?          1

6. Name four whorls of a complete flower.          2

7. Write the harmful role of Fungi.      2

8. Differentiate between simple tissue and complex tissue.        2

9. Draw and label a yeast cell.       2

10. Distinguish between Prokaryotic and Eukaryotic cells.       2

11. What is Hormone? Mention various growth hormones found in plants.      1+2=3

12. Describe the different types of Vascular bundles found in the plants.     3

13. Define Mitochondria. Describe the structure and functions of Mitochondria with diagram.      1+4=5

Or

What is five-Kingdom classification? Write the major characters of Five-Kingdom classification.           1+5=5

14. Describe the major differentiating characters in between Calvin cycle (C3 plants) and Hatch-Slack pathway (C4 plants) of photosynthesis.      5

 

Part – II (Zoology)

1. Choose the correct answer:           1x5=5

(a) Which one of the following animals is hermaphrodite?

(i) Honey bee

(ii) Housefly

(iii) Ascaris

(iv) Leech

(b) ‘Islets of Langerhans’ is found in

(i) Spleen

(ii) Liver

(iii) Pancreas

(iv) Pituitary gland

(c) The number of cranial nerves in a mammal including man is

(i) 10

(ii) 12

(iii) 24

(iv) 36

(d) Antigen is not present in which of the blood group –

(i) Blood group A

(ii) Blood group B

(iii) Blood group AB

(iv) Blood group O

(e) The Primary structure of protein is due to

(i) hydrogen bonds

(ii) peptide bonds

(iii) ionic bonds

(iv) di-sulphide bonds

2. Write the answers very briefly: (Any four)               1x4=4

(a) What is flame cell’”

(b) What is called the pacemaker of the heart?

(c) What is the function of rennin?

(d) Why is toad called poikilothermic?

(e) What is synapse?

(f) What is Anaerobic respiration?

3. Write the difference between the following: (Any two)          2x2=4

(a) Bilateral symmetry and radial symmetry.

(b) Ectoparasite and Endoparasite

(c) Blood and Lymph

(d) Ureotelic animal and Uricotelic animal

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

(a) Write four distinctive characters of Mammalia.

(b) Why is meiosis division most essential for sexually reproduce animal?

(c) Why is enzyme called as organic catalyst?

(d) What is Bohr’s Effect?

(e) Write the chemical properties of hormone.

5. Write short note on: (Any two)              3x2=6

(a) Prototheria

(b) Connective tissue

(c) Dentition in man

(d) Cell cycle

6. What is digestion? Write briefly the process of digestion in stomach.           1+4=5

Or

What is haemoglobin? Write the role of haemoglobin in the transportation of oxygen and carbon-di-oxide present in the blood.         1+4=5

7. What is excretion? What are the excretory products? Write the process of urea formation.           1+1+3=5

Or

What is nucleic acid? How many types of nucleic acid are there? Describe the molecular structure of DNA. 1+1+3=5


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