SSLC Biology Solution Chapter1 Sensations and Responses

 

SSLC Biology Solution Chapter1 Sensations and Responses

SCERT's biology curriculum includes the tenth science textbook chapter. You may get all of the textbook's problems and solutions for free from this page. For pupils in class 10 of the Kerala curriculum, I have uploaded the biology notes. You may obtain a free PDF answer sheet together with the solution keys for each chapter from this page. Students may discover all of the biology chapter questions in this PDF file, along with the correct answers and study guides that they should use in accordance with the Indian educational system.


For some of the problems that were being challenged in the Kerala board SSLC biology textbook solutions, we have the solutions in this post. In this series, we'll strive to provide explanations and answers for all the unusual questions in the biology textbook's chapter 1 sensation and replies for the SSLC curriculum.


Board SCERT, Kerala
Text Book SCERT Based
Class SSLC 
Subject Biology Solution
Chapter Chapter 1
Chapter Name Sensations and Responses
Category Kerala SSLC


Kerala Syllabus SSLC Class 10 Biology Textbook Solution Chapter 1 Sensation and Responses


Qn 1.

The part of the brain which helps to maintain body balance,

  1. Cerebrum
  2. Cerebellum
  3. Medulla oblongata
  4. Thalamus
  • Answer)

    Cerebellum


Qn 2.

Identify the relationship and fill in the blanks.

Irregular flow of charge in the brain: Epilepsy,

Decreased production of dopamine: ............?

  • Answer)

    Parkinsons


Qn 3.

Analyse the following instances and answer the questions.

  • a thorn accidentally pierce the foot
  • the leg is withdrawn
  • the thorn is taken out slowly
  1. Write the stimuli and response.
  2. Which is the conscious response?
  3. Was the leg withdrawn after sensing the pain?    Which action took place there? Prepare an illustration showing the parts through which the impulses transmitted.

 

  • Answer)
    1. A thorn accidentally pierces the foot (stimulus) and the leg is withdrawn (response).
    2. The thorn is taken out slowly
    3. No. Reflex action takes place here.                                                                    Stimulus --> Receptor --> Sensory nerve --> Inter neuron --> Motor nerve --> Related muscle --> withdrawal of leg

More Questions

Question 1.

The part of the brain which helps to maintain body balance.
A. Cerebrum

B. Cerebellum

C. Medulla oblongata

D. Thalamus


Answer:

The cerebellum is at the back of the brain, below the cerebrum. Its size is 1/8th of the Cerebrum. But it's a very important part of the brain. It controls balance, movement, and coordination (how your muscles work together). Because of your cerebellum, you can stand upright, keep your balance, and move around.

Whenever a person consumes alcohol the first part of the brain to be affected is one’s cerebellum. That’s why a person loses control after drinking.


Question 2.

The part of the brain which helps to maintain body balance.
A. Cerebrum

B. Cerebellum

C. Medulla oblongata

D. Thalamus


Answer:

The cerebellum is at the back of the brain, below the cerebrum. Its size is 1/8th of the Cerebrum. But it's a very important part of the brain. It controls balance, movement, and coordination (how your muscles work together). Because of your cerebellum, you can stand upright, keep your balance, and move around.

Whenever a person consumes alcohol the first part of the brain to be affected is one’s cerebellum. That’s why a person loses control after drinking.


Question 3.

The part of the brain which helps to maintain body balance.
A. Cerebrum

B. Cerebellum

C. Medulla oblongata

D. Thalamus


Answer:

The cerebellum is at the back of the brain, below the cerebrum. Its size is 1/8th of the Cerebrum. But it's a very important part of the brain. It controls balance, movement, and coordination (how your muscles work together). Because of your cerebellum, you can stand upright, keep your balance, and move around.

Whenever a person consumes alcohol the first part of the brain to be affected is one’s cerebellum. That’s why a person loses control after drinking.


Question 4.

Identify the relation and fill in the blank.

Decreased production of dopamine: -----------


Answer:

Parkinson's disease.

Dopamine is a neurotransmitter, a chemical that facilitates the transmission of signals between brain cells, or neurons, by binding to neuron receptors. The chemical is involved in controlling emotions, pleasure, movement and incoming information. Dopamine is considered one of the feel-good neurotransmitters.


Parkinson's disease is a degenerative disease that is associated with a breakdown of dopamine-releasing neurons. Dopamine is involved in everything from cognition and mood to the ability to regulate body movements. If the amount of dopamine in the cells is too low, it can affect muscle control. The lack of dopamine can cause slow movement and muscular paralysis.



Question 5.

Identify the relation and fill in the blank.

Irregular flow of charge in the brain: Epilepsy


Answer:

Epilepsy is a disease that causes the irregular flow of the charge in the brain.

Epilepsy is a neurological disorder in which nerve cell activity is disturbed causing sudden recurrent episodes of sensory disturbance. Due to this, a person experiences abnormal behaviour, symptoms, and sensations, sometimes including loss of consciousness. . Epilepsy may occur as a result of a genetic disorder or an acquired brain injury, such as a trauma or stroke. Epilepsy is usually treated by medication and in some cases by surgery, devices or dietary changes.



Question 6.

Analyze the following instances and answer the questions.

• a thorn accidentally pierces the foot

• the leg is withdrawn.

• the thorn is taken out slowly.

Write the stimuli and responses.


Answer:

Thorn accidentally pierces the foot as stimuli and the leg withdrawal is a response to stimuli.

Stimuli - Anything you can think of that you can recognize by touch, thought or action. It can be auditory, visual or mixed. As the thorn pierces the leg we feel the pain in our leg. This is stimuli.


Responses- The reaction to the above stimuli. It could be motor or control responses in our brain that we may be aware or unaware of. When we feel the pain we withdraw our leg. This is a response.



Question 7.

Analyze the following instances and answer the questions.

• a thorn accidentally pierces the foot

• the leg is withdrawn.

• the thorn is taken out slowly.

Which is the conscious response?


Answer:

Removal of thorn is a conscious response

Conscious responses to stimuli occur when a person is awake and aware that s/he is responding. They are making a conscious decision to respond.



Question 8.

Analyze the following instances and answer the questions.

• a thorn accidentally pierces the foot

• the leg is withdrawn.

• the thorn is taken out slowly.

Was the leg withdrawn after sensing the pain? Which action took place there? Prepare an illustration showing the parts through which the impulses transmitted.


Answer:

Yes, it was a motor response to withdraw leg. Withdrawal reflex or spinal reflex took place here. Withdrawn of the leg after sensing pain is withdrawal reflex. The withdrawal reflex (flexor withdrawal reflex) is a spinal reflex intended to protect the body from damaging stimuli.

Illustration showing the parts through which the impulses transmitted





SSLC Biology Textbook Solution


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