AHSEC| CLASS 11| BIOLOGY| QUESTION PAPER - 2015| H.S.1ST YEAR
2015
Biology
(Theory)
Times: 3 hours
Full marks: 70
Part - I (Botany)
1. Who discovered the plant cell? 1
2. What is stomata? 1
3. Why potato is called underground stem? 1
4. Name four whorls of a complete flower. 2
5. Write the harmful role of Fungi. 2
6. Differentiate between simple tissue and complex
tissue. 2
7. Draw and label an yeast cell. 2
8. Distinguish between Prokaryotic and Eukaryotic
cells. 2
9. What is Inflorescence? Mention the special types of Inflorescences
with example. 1+2=3
10. Define Transpiration. Write its types. 1+2=3
Or
Explain the
graphic representation of Glycolytic process of plant Respiration. 3
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 if five Kingdom
classification? Write the major characters of Five Kingdom classification. 1+4=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 in a mammal including man is
(i) 10
(ii) 12
(iii) 24
(iv) 36
(d) Antigen is
not present in 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 answer 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 toad is
called poikilothermic?
(e) What is
synapse?
(f) What is Anaerobic
respiration?
3. Write the difference between the following: (Any
two) 2x2=4
(i) Bilateral
symmetry and radial symmetry.
(ii)
Ectoparasite and Endoparasite
(iii) Blood and
Lymph
(iv)Ureotelic
animal and Uricotelic animal
4. Answer the following briefly: (Any three) 2x3=6
(a) Write four
distinctive characters of Mammalia.
(b) Why meiosis
division is most essential for sexually reproduce animal?
(c) Why enzyme
is 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
(i) Prototheria
(ii) Connective tissue
(iii) Dentition
in man
(iv) Cell cycle
(v) Reflex
action
6. What is digestion? Write briefly the process of digestion
in stomach. 1x4=5
Or
What is haemoglobin?
Write the role of haemoglobin in the transportation of oxygen and
carbon-di-oxide presence in the blood.
1x4=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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