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Question 113: The organ A which is located inside the skull of
Biology by Lakhmir Singh
Biology

Class 10

Lakhmir Singh

Author:
Lakhmir Singh
Publisher:
S. Chand
Subject:
Science
1

Chapter 1: Life Processes

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2

Chapter 2: Control and Coordination

182 questions

Q1
Question 112: The two glands A and B which occur in pairs, are present in the endocrine system of humans. The pair of gland A is found only in females whereas the pair of gland B occurs only in males. The glands A make and secrete two hormones C and D whereas glands B make and secrete only one hormone E. In addition to hormones, glands A make gametes F whereas glands B make gametes G.
(a) What are glands A?
(b) What are hormones C and D?
(c) What are glands B? Name the hormone E.
(d) What are gametes (i) F and (ii) G?
(e) Which event in the life of males and females is associated with the secretion of the hormones C, D and E?
Q2
Question 113: The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. The space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.
(a) What is organ A?
(b) What are (i) B, (ii) C and (iii) D?
(c) Name the organ E.
(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?
(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involved in this action?
Q3
Question 114: Write down the following in the correct order for a simple reflex arc:
(a) impulse travels in the motor fibre
(b) impulse travels in the sensory fibre
(c) effector organ stimulated
(d) impulse crosses the synapse
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3

Chapter 3: How do Organism Reproduce?

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4

Chapter 4: Heredity and Evolution

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5

Chapter 5: Our Environment

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6

Chapter 6: Management of Natural Resources

70 questions

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Question

Question 113: The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. The space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.
(a) What is organ A?
(b) What are (i) B, (ii) C and (iii) D?
(c) Name the organ E.
(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?
(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involved in this action?

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Biology (Lakhmir Singh)

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Question 113: The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. The space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.
(a) What is organ A?
(b) What are (i) B, (ii) C and (iii) D?
(c) Name the organ E.
(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?
(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involved in this action?
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Text SolutionText solutionverified iconVerified

Answer: (a) Organ A is brain.
(b) (i) B - Cranium
     (ii) C - Meninges
     (iv) D - Cerebro spinal fluids
(c) Organ E is spinal cord
(d) It is the organ E which is involved in this type of reaction and organ E refers to spinal cord.
(e) It is the organ A (brain) which is involved in this reaction.
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Q1
Question 112: The two glands A and B which occur in pairs, are present in the endocrine system of humans. The pair of gland A is found only in females whereas the pair of gland B occurs only in males. The glands A make and secrete two hormones C and D whereas glands B make and secrete only one hormone E. In addition to hormones, glands A make gametes F whereas glands B make gametes G.
(a) What are glands A?
(b) What are hormones C and D?
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(d) What are gametes (i) F and (ii) G?
(e) Which event in the life of males and females is associated with the secretion of the hormones C, D and E?
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Question 113: The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. The space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.
(a) What is organ A?
(b) What are (i) B, (ii) C and (iii) D?
(c) Name the organ E.
(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?
(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involved in this action?
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Question 114: Write down the following in the correct order for a simple reflex arc:
(a) impulse travels in the motor fibre
(b) impulse travels in the sensory fibre
(c) effector organ stimulated
(d) impulse crosses the synapse
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Question Text
Question 113: The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. The space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.
(a) What is organ A?
(b) What are (i) B, (ii) C and (iii) D?
(c) Name the organ E.
(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?
(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involved in this action?
TopicControl and Coordination
SubjectScience
ClassClass 10
Answer TypeText solution:1
Upvotes67