Previous Year Paper year:2019 : ICSE-X-Biology

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ICSE-X-Biology

Previous Year Paper year:2019

with Solutions - page 5

#2-b-v
Corpus callosum
Ans : Between two cerebral hemispheres.

#3

#3-a
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow :
[5]

#3-a-i
Name the factor studied in this experiment.
Ans : Sunlight

#3-a-ii
What will you observe in the experimental leaf after the starch test?
Ans : The exposed parts will turn blue-black with iodine solution while the part covered with black paper strip turns brown.

#3-a-iii
Explain the process of Photosynthesis.
Ans : The process by which green plants containing chlorophyll produce food (glucose) from carbon dioxide and water by using light energy.

#3-a-iv
Give a balanced chemical equation to represent the process of photosynthesis.
Ans :

#3-a-v
Draw a neat, labelled diagram of an experimental setup to show that oxygen is released during photosynthesis.
Ans :

#3-b
State the main functions of the following :
[5]

#3-b-i
Medulla Oblongata
Ans : Controls involuntary activities

#3-b-ii
Cytokinins
Ans : Expansion of cotyledons, inhibits apical dominance, cell elongation.

#3-b-iii
Tears
Ans : Helps in killing germs, lubricates surface of eye.

#3-b-iv
Coronary Artery
Ans : Supply blood to heart muscles.

#3-b-v
Seminal Vesicles
Ans : Produces secretion which serves as a mediums for transportation of sperms which forms semen.

#4