Question Pool Chemical Messages for Homeostasis

Chemical Messages for Homeostasis - SAMAGRA Question Pool & Answers | Class 10 English Medium

Kerala Syllabus SAMAGRA SCERT SAMAGRA Question Pool for Class 10 English Medium Biology Chemical Messages for Homeostasis

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Qn 3.

Analyze the information given in the box and answer questions. 

Thymas, Pituitary, Pinial, Hypothalamas

1. Identify the gland which is not present in the brain.

2. Which of these gland is a part of both nervous system and endocrine system?

 

  • Answer)

    1. Thymas

    2. Hypothalamas

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Qn 4.

X is a hormone and Y is a gland.Observe the table and answer the questions.

X Slows down the action of defense cells.
Y Control the activities and maturation of T lymphocytes.

1. Identify the Hormone indicated as X.

2. Which endocrine gland does 'X' indicate?

3. Name the hormone which stimulate the gland that secrete "X"?

 

  • Answer)

    1. Cortisol

    2. Thymus

    3. 

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Qn 5.

Maintenance of blood calcium level is illustrated below. Analyse it
and answer the  questions.

Hints - A,B Glands

             X,Y Hormones

1. Write the normal blood Calcium level.

2. Identify the glands indicated as A and B.

3. Name the hormones mentioned as X and Y.

4. Write any one function of X in the regulation of blood calcium level.

 

  • Answer)

    1. 9-11 mg/100ml

    2. A- Thyroid Gland, B- Parathyroid gland

    3. X - Calcitonin, Y- Parathormone.

    4. Prevents the process of mixing of calcium

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Qn 6.

The normal level of two components of human blood given in the table. Analyze them and answer the questions.

A 9-11 mg/100ml
B 70-110 mg/100ml

1. Identify A and B.

2. Name the hormones which maintains the normal level of A.

3. Write the disease caused by the excess level of B?

 

  • Answer)

    1. A- Normal blood calcium level, B- Normal blood glucose level

    2. Calcitonin,Parathormone

    3.

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Qn 7.

Tabulate the diseases given in the box

Alzheimer's, Acromegaly, Epilepsy, Diabetes

 

Disorder of nervous system

Disorder of endocrine system

 

 

 

  • Answer)


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    Qn 8.

    Tabulate the hormones given the box by giving the name of the their glands as the heading.

    Vasopressin, Thyroxine, Releasing hormone,  Prolactin, Calcitonin, Somatotropin

     

    • Answer)


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      Qn 9.

      Analyse the table and give proper heading to columns A and B

      A

      B

      Musk

      Ethylene

      Bombycol

      Gibberellin

       

      • Answer)


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        Qn 10.

        Classify the given terms based on the similarities and give proper heading.

        Ethylene, Civeton, Gibberellin, Bombycol

         

        • Answer)


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          Qn 11.

          Which among the following is/are not produced by pituitary gland?

          Prolactin, Oxytocin, Somatotropin, Gonado tropic hormone

           

           

          • Answer)

            Oxytocin

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          Qn 12.

          Complete the table by analysing the Hints.

          X - production of milk.
          Y – facilitates lactation.

            Name

          Gland

          X    
          Y    

           

           

          • Answer)


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            Qn 13.

            Write answers to the questions using the data given in box.

            Adrenal gland

            Cortex - aldosterone

            Medulla - Cortisole

            a) Which is the correct pair among those indicated in the box?

            b) Which is the site of action of the hormone that controls salt – water balance ?6060

             

            • Answer)

              a) Cortex – aldosterone

              b)

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            Qn 14.

            Find out the correct statement related to hormones among the following.

            a) Hormones act only on target cells.

            b) Hormones are the secretions of endocrine glands

            c) Hormones reach the target cells through special tubes

            d) Hormones are transported through the blood.

             

            1. a, b, c are correct

            2. a, c, d are correct

            3. b, c, d are correct

            4. a, b, d are correct

             

            • Answer)

              4. a, b, d are correct

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            Qn 15.

            Identify the odd one and write the common feature of others

            TSH, ACTH, GTH, ADH

             

            • Answer)

              ADH, Others are tropic hormones/produced by anterior lobe of

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            Qn 16.

            Which among the following hormones has no role in the maintenance of blood glucose.

            Cortisol, Glucagone, Aldosterone, Insulin

             

            • Answer)

              Aldosterone

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            Qn 17.

            Write the relation between the words among the word pairs by analysing them.

            a) Thyroxine – Cretinism

            b) Somatotropin – Dwarfism

             

            • Answer)

              a) The disease, Cretinism develops in children due to the deficiency of thyroxine.

              b) The disease, Dwarfism develops in children due to the deficiency of

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            Qn 18.

            Identify the odd one and write the common feature of others

            Melatonin, Progesterone, Testosterone, Oestrogen

             

            • Answer)

              Melatonin. Others are sex

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            Qn 19.

            Name the hormone indicated as “A” in the illustration.

             

            • Answer)

              Releasing hormone

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            Qn 20.

            Observe the illustration.

            a) Which hormone is wrongly included in the illustration?

            b) Which gland produces the wrongly included hormone? What is its function?

             

            • Answer)

              a) ADH

              b) Hypothalamus. Helps to reabsorb water from the

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            Qn 21.

            Complete the illustration of the working of vasopressin using the data given in the box

            Increases, Decreases, Normal level, No change

             

            • Answer)

              A. Quantity of water in the blood decreases

              B. Production of vasopressin increases
              C. Reabsorption of water in kidney

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            Qn 22.

            Answer the questions by analysing the given situations

            A. Production of vasopressin decreases.

            B. Production of insulin decreases.

            C. Production of calcitonin decreases.

            a) Which disease develops during the situation A?

            b) Which disease develops during the situation B?

            c) Which are the blood factors that vary during the conditions A, B and C

             

            • Answer)

              a) A – diabetes insipidus

              b) B – Diabetes

              c) A – water, B- glucose, C-

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            Qn 23.

            Which among the following is not a function of thyroid gland?

            a) Raises the rate of metabolism.

            b) Helps to reabsorb water in kidney

            c) Regulates growth in children.

            d) Increases energy production.

             

            • Answer)

              b) Helps to reabsorb water in

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            Qn 24.

            Analyse the given statements and explain how the functioning of endocrine glands are controlled?

            a) Hypothalamus controls pituitary gland

            b) Pituitary gland controls other endocrine glands

             

            • Answer)

              a) The releasing hormones produced by hypothalamus stimulate the production of hormones from pituitary gland. The inhibiting hormones produced by hypothalamus

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            Qn 25.

            Analyse the following statements and give reasons.

            a) Sleeps during night and wake up in the morning

            b) Bees and Termites live in colonies.

             

            • Answer)

              a) The production of melatonin is high at night so we feel sleepy and low during the day so we wake up

              b) Chemicals called Pheromones act as chemical

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            Qn 26.

            Prepare a flow chart on the action of hormones on target cells by rearranging the data.

            • Enzymes become functionally active within the cell

            • Endocrine gland produces hormones

            • Changes occur in cellular activities.

            • Hormone – receptor complex is formed

            • Hormone reaches the target cells through blood

            • Hormone molecule binds with the receptor

             

            • Answer)
              • Endocrine gland produces hormones

              • Hormone reaches the targetcells through

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            Qn 27.

            Certain hormones produced by Adrenal gland help to fight or flight from an emergency situation

            a) Which are the hormones depicted in the statement?

            b) How these hormones are connected to autonomous nervous system?

             

            • Answer)

              a) Epinephrine (Adrenaline), Norepinephrine (Noradrenaline)

              b) The body activities developed when the sympathetic nervous system is stimulated are maintained

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            Qn 28.

            “X” is a hormone. This hormone maintains the rhyth of daily activities.

            1) Which is the hormone indicated by X?

            2) Which gland produces this hormone?

            3) What is the difference in the production of this hormone during night and day?

             

            • Answer)

              1) Melatonin

              2) Pineal gland

              3) Production of melatonin is high at night and low at

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            Qn 29.

            A. Nervous system controls the physiological activities

            B. Along with nervous system, Endocrine system also controls the physiological activities

            Write your response by analysing the opinions of A and B. Justify your response.

            • Answer)

              Homeostasis can be maintained by the combined action of nervous system and endocrine system. For example hormones Epinephrine and norepinephrine maintain the

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            Qn 30.

            A – Pituitary gland controls the production of hormone from endocrine glands

            B - Hypothalamus controls the production of hormone from endocrine glands

            Write your response by analysing the opinions of A and B. Justify your response.

             

            • Answer)

              Hypothalamus controls the production of hormones from endocrine glands. Releasing hormones produced from hypothalamus stimulates the anterior lobe of

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            Qn 31.

            Write two concepts based on the following subtopics for preparing a seminar on artificial plant hormones

            1) Possibilities

            2) Concerns

             

            • Answer)

              1) Possibilities-

              Auxins can be used to prevent the dropping of premature fruits

              Abscisic acid can be

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            Qn 32.

            Find the odd and write the peculiarities of others.

            Auxin, Ethylene, Cytokinin, Gibberellin

             

            • Answer)

              Ethylene. Others are in liquid form or  stimulate the plant

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            Qn 33.

            Honey bees and termites are living in colonies.

            1) Which chemical helps them to live in colonies?

            2) Write other two functions of this chemical.

            3) How this chemical can be used in the agricultural sector?

             

            • Answer)

              1) Pheromones

              2) To attract mates, to inform the availability of food ( to determine the path of travel, to give signals on dangers)

              3) Artificial

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            Qn 34.

            Write answer to the questions by analysing the illustration and data given in the box

            Kidney, Bone, Uterus

            1) Select name of the organs indicated as A and B in illustration from the box

            2) How Hypothalamus and pituitary are related to oxytocin and vasopressin?

            3) Write the action of oxytocin in A.

             

            • Answer)

              1) A- Uterus, B – Kidney

              2) Hypothalamus produces oxytocin and vasopressin and releases them to the posterior lobe of pituitary.

              3) Makes the

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            Qn 35.

            Functions of Plant hormones  are given in the box. Analyse the box given below and complete the table suitably.

            Fruit formation, Dropping of ripened leaves and fruits, Cell division,
            Break down of stored food, Growth of terminal buds.

             

            • Answer)


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              Qn 36.

              Analyse the given symptoms and tabulate them suitably

              a) Weight loss b) Increase in body weight c) Emotional imbalance d)Hypertension e) Excessive sweating f) Inflammation in body tissues

              Hypothyroidism Hyperthyroidism
               

               

               

               

               

              • Answer)
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              Qn 37.

              X and Y in the illustration are hormones.

              • X reduces the level of calcium in blood.

              • Iodine is essential for the production of Y.

               

              1) Name the hormones X and Y

              2) Write any two functions of Y

               

              • Answer)

                1) X – Calcitonin, Y – Thyroxine

                2) Increases energy production / Raises the rate of metabolism / Accelerates the growth and development of the

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              Qn 38.

              The names of certain endocrine glands of man are given below. Arrange them as from head to bottom based on the position.

              Pancreas, Thyroid, Pituitary, Testis, Hypothalamus, Thymus

               

              • Answer)

                Hypothalamus, Pituitary, Thyroid, Thymus, Pancreas,

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              Qn 39.

              The production of somatotropin in persons A and B is given in the illustration.

              Identify the diseases of persons A and B?

               

              • Answer)

                A – Gigantism

                B-

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              Qn 40.

              It is essential to eat food containing iodine. Deficiency of iodine affects the functioning of a gland that controls the metabolic activities.

              1) Which gland is indicated in this statement?

              2) How does the deficiency of iodine affect this gland?

               

              • Answer)

                1) Thyroid gland

                2) Deficiency of iodine causes the decrease in the production of thyroxine and it leads to a diseases called

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              Qn 41.

              Make a question that answers the level given below.

              70-110 mg /100ml blood

               

              • Answer)

                What is the normal blood glucose

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              Qn 42.

              Which among the following glands are not located in the brain?

              Thymus gland, Hypothalamus, Pinial gland, Adrenal gland, Pituitary gland

               

              • Answer)

                Thymus gland,Adrenal gland

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              Qn 43.

              "Diabetes patient should be more energetic as their blood glucose levels are higher."

              What explanation will you give to this doubt?

               

              • Answer)

                Energy is released by the breakdown of glucose in the cell. In diabetic patient blood glucose level increase due to the defeciency or malfunction of insulin.

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              Qn 44.

              Identyfy the glands related to the given statements.

              a) Reduces the blood calcium level.

              b) Maintains the salt- water level

              c) maintain the rhythm of our daily activities

               

              • Answer)

                a) Thyroid gland

                b) Adrinal gland

                c) Pinial

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              Qn 45.

              Choose the statements related to the gland that secrete hormones enable to overcome emergency situations.

              1. Medulla secrete hormones.

              2. Situated justbelow the hypothalamus.

              3. Stimulated by Adreno Cortico Tropic Hormone.

              4. Hormone disorder leads to Acomegali.

               

              • Answer)

                1. Medulla secrete hormones.

                3. Stimulated by Adreno Cortico Tropic

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              Qn 46.

              Observe the illustration and write answers to following questions.

              Indicator: Hormone X

                                                 X

              a) which is the hormone indicated as X.

              b) Write two functions of X to maintain the blood glucose level.

               

              • Answer)

                a) Insulin

                b) Stimulate the entry of glucose molecules into cell, converts glucose to glycogen in liver and

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              Qn 47.

              The elements that enable the body to overcome the emergency situations are referred to as A, B, C. 

              1. Name the hormones that indicate A and B.

              2. Identify the part of autonomous nervous system that indicates C.

               

              • Answer)

                1. A,B- Adrinalin and noradrinalin

                2. Sympathetic

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              Cytokinin Auxin

              Cell

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          Pheromones Plant
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    Disorder of nervous

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