AHSEC| CLASS 11| BIOLOGY| QUESTION PAPER - 2018| H.S.1ST YEAR
2018
Biology
(Theory)
Times: 3 hours
Full marks: 70
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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