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LA MARTINIERE FOR BOYS, KOLKATA
Rehearsal Examination 2, 2021-22
Class:X Full Marks: 40
Subject: Biology (Science- Paper 3) Time: 1 hour 30 minutes
Answers to this Paper must be written on the paper provided separately.
You will not be allowed to write during the first 10 minutes.
This time is to be spent in reading the question paper.
The time given at the head of this Paper is the time allowed for writing the answers.
questions from Section B.
Attempt all questions from Section A and any three
The intended marks for questions or parts of questions are given in brackets |1
SECTIONA
(Attempt all questions).
Question.1.
Name the following by choosing the correct answers tothe questions from the given options.
(Do not copy the question, Write the correct answer only.) [10]
Potassium ions are secreted into the glomerular filtrate in:
(a) Proximal convoluted tubule
(b) Loop of Henle
(c) Distal convoluted tubule
(d) Collecting duct
() A thrombus is formed in the final stage of blood clotting when:
(a) Prothrombin reacts with thrombin
(b) Thrombin reacts with fibrinogen
(c) Serum reacts with thrombokinase
(d) Prothrombin reacts with fibrinogen
10- biology-15
(ii) The anvil shaped bone 1s:
(a) Malleus
(b) Incus
(c) Stapes
(d) Tarsals
1s:
(iv) The function of corpus callosum
(a) To control the body temperature
functions
(b) Control of all the voluntary
(c) Regulation of pituitary gland
two cerebral hemispheres
( Connecting the
(v)The characteristic feature which
is not present in the cross-section of an artery is:
(a) Thick muscular walls
(b) Wide lumen
(c) Absence of valves
(d) Presence of elastic walls
The concentration of glucose in glomerular filtrate is maximum in:
(vi)
(a) Proximal convoluted tubule
(b) Descending loop of Henle
(c) Ascending loop of Henle
(d) Distal convoluted tubule
(vii) The nerve carrying stimulus from skin to spinal cord is:
(a) Motor nerve
(b) Sensory nerve
(c) Association nerve
(d) None of the above
leads to:
(viii) Cushing's syndrome
(a) Skin pigmentation
(b) Loss of weight
(c)Osteoporosis
(d) Sensitivity to cold and pain
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sy
stcha
lc:ndsto
ix) The stimulation of parasy mpathetic nervous sy steh
(a) Acceleration of heart beat
b) Relaxation of bronchi
(c) Inhibition of saliva secretion
(d) Inerease in peristalsis
objects:
the nearby
in seeing
() The disorder ofthe eye in which there is dificulty
(a) Myopia
(b) Hyperopia
(c) Astigmatism
(d) Presbyopia
SECTIONB
from this Section.)
(Attempt any three questions
Question 2
heartbeat. ldentify the
of protruding eyes and rapid
A paient is showing the symptoms
21
disorder. State the cause of the disorder.
121
SAN. What is its function?
(ii) Give the location of
eye. Label the parts A, B and
C. 131
of the human
diagram
(iii) Given below is the
for:
biological terms
(FA) Give the
innermost iayèr ofthe eye.
area of best
vision in the
1. The
the hulance of the body.
2. The part
of the brain maintaining
present within
the cochlea. 31
3. The organ of hearing
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Question 3
differences oc ICS mellitus and Diabetes insipidus. 121
(i) Mention two points
is its
located? What function? 12
ii) Where is renal corpuscle
or
nuutla KIdney. Label
(ii) Drawa neat diagram ofthe L.S. any two parts.
Portal vein'. State
one example.
(iv) Define the term
Question 4
Name the thin tendinous cords which
nola the cardiac valves in position. What is the
(i)
relaxation of the heart is known as?
phase
2
i) Give the exact location of Pituitary gland. (21
hormone secreted by anterior pituitary. State the disorders caused due to
(ii) Name one
hyposecretion and hypersecretion of this hormone. 3
(E) Name the processes by which the WBCs:
(a) Squeeze out through the walls of the capillaries
(b) Engulf bacteria
State the example of a type of white blood cell which exhibits these processes.
Question5
(i) How are cytons and axons arranged in the brain? 12
(ii) We are unable to distinguish objects in a dark room when we move in from a lighted area.
Explain giving suitable reasons. (21
cardiac
(iii) Given below is a diagram the human heart undergoing a particular phase of the
cycle
Answer the questions that follow:
(i) Give the scientific term for this particular Cardiac phase.
oPn
i) Name one cardiac valve which remains during this time.
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(11) State the blood vessel which
carries deoxveenated blood from facial muscles to the heart.
(IV) What is meant by the term 131
'hypoglycemia ? Name the hormone which causes this effect.
Mention the source of secretion of
this hormone.
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