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Plus One Zoology Chapter Wise Previous Questions Chapter 11 Chemical Coordination and integration

January 29, 2023 by Kalyan

Kerala Plus One Zoology Chapter Wise Previous Questions Chapter 11 Chemical Coordination and integration

Question 1.
After diagnosing the blood of a foetus, a doctor comments that the foetus has some immunological diseases and it may be due to the malfunctioning of an endocrine gland. (MARCH-2010)
a) Name the gland.
b) Which are the hormones produced by this gland?
c) What are the main functions of these hormones?
Answer:
a) Thymus
b) Thymosin
c) Maturation and differentiation of lymphocytes/ cell medicated immunity.

Question 2.
Draw a flow chart on the mechanism of hormone action. (SAY-2010)
Generates cyclip AMP, FSH release, Biochemical response, Response I, Binds with membrane receptor, Ovarian growth
Answer:
FSH release → Binds with membrane receptor → response I → generates cyclic AMP → Biochemi-cal response → ovarian growth

Question 3.
Match columns B and C with column A. (MARCH-2011)

ABC
ThyroidMelatoninWeak immunity
PituitaryInsulinANF
PancreasThymosinGigantism
ThymusGrowth hormoneDiabetes Mellitus
ThyroxineGoitre
ProgesteroneMarasmus

Answer:

ABC
ThyroidThyroxineGoitre
PituitaryGrowth hormoneGigantism
PancreasInsulinDiabetes   mellitus
ThymusthymosinWeak immunity

Question 4.
Analyse the facts given in three columns, find their relationship and fill the blanks. (SAY-2011)

Thymusa) …………..Differentiation of T – Lymphocytes
b) ……….AdrenalineEmergency Hormone
KidneyErythropoietinc) ……………
Pancreasd) …………..Decrease blood glucose level

Answer:
a) Thymosine
b) adrenal medulla
c) stimulates erythropoiesis (formation of RBC)
d) Insulin

Question 5.
Thymus gland is found to be not functioning in a 6- year-old boy. How will this condition affect the immune system of the boy? (MARCH-2012)
Answer:
Thymus gland secretes the hormone thymosine which helps in the differentiation of T – lymphocytes In the absence of thymosine immune system becomes weak

Question 6.
Complete the Table. (MARCH-2017)

Entrocine glandHormoneFunctions
Heart…….. (A)……Decease blood pressure
Pancreasinsulin…….. (B)……
……ErythropoietinStimulate erythropoiesls
Thymus……Gives Immunity

Answer:
A – ANF (Atrial natriuretic factor)
B – Hypoglycemic hormone
C –  Kidney/JGA
D – Thymosin

Question 7.
Fill the table appropriately. (MARCH-2013)

ABC
HormoneEndocrine glandPrincipal function
1) Thyroxini) Adrenal glanda) Contraction of smooth muscles
2) Oxytocinii) Thymus glandb) Stimulates ovulation
iii) Pituitary glandc) Regulates basal

metabolic rate

iv) Thyroid glandd) Increase calcium level in the blood

Answer:
a) stimulate secretion of bile juice
b) Kidney
c) ANF .
d) parathyroid

Question 8.
Observe the relationship between the first two terms and fill up the blank  (SAY-2013)
Hyperglycemic hormone: Glucagon
Hypoglycemic hormone: ………
Answer:
Insulin

Question 9.
Complete the chart showing hormone and hormonal diseases (MARCH-2014)

DiseasesCauses
DwarfismLow secretion of growth hormone
a) ……..Over-secretion of growth hormone
GoitreDeficiency of iodine
Diabetes mellitusb) ……..

Answer:
a) Gigantism
b) Insulin

Question 10.
Complete the following sentence using appropriate words. (SAY-2014)
a) ……….. hormone controls the diurnal (24 hour) rhythem.
b) Insulin controls ………… level of blood.
Answer:
a) Melatonin
b) Glucose or sugar

Question 11.
Complete the following table : (MARCH-2015)

HormoneEndocrine glandFunction
…A…OvaryHormone supports pregnancy
Thyroxine…B…Hormone regulates BMR
Adrenaline…C…Emergency hormone
…. D……PancreasHyperglycemic hormone

Answer:
A – Progesterone
B – Thyroid gland
C – Adrenal medulla
D – Glucagon

Question 12.
Match columns B and C with column A (SAY-2015)

ABC
Thyroid InsulinWeak immunity
PituitaryThymosinGigantism
PancreasGrowth hormoneDiabetes Mellitus
ThymusThyroxineGoitre

Answer:

ABC
ThyroidThyroxineGoitre
PituitaryGrowth hormoneGigantism
PancreasInsulinDiabetes mellitus
ThymusThymosinWeak Immunity

Question 13.
Where do you find the following structures in a human body? (SAY-2015)
a) Cochlea
b) Neurotransmitters
Answer:
a) inner ear
b) synaptic knob of Neuron

Question 14.
Write any two examples for the following.  (SAY-2015)
a) Hormones that control blood-sugar level
b) Hormones that control sexual development
Answer:
a) insulin
b) gonadotrophins

Question 15.
Hormonal abnormality is responsible for certain diseases in man. List of some diseases are given below. Write the hormone related to each of them. (MARCH-2016)
a) Diabetes mellitus
b) Gigantism
c) Diabetes insipidus
d) Cretinism
OR
Like insulin and glucagon, PTH and calcitonin are antagonistic in their action in maintaining normal blood calcium level. Substantiate this statement.
Answer:
a) insulin
b) growth hormone
c) ADH
d) thyroxine
OR
PTH increases Ca2+ level in blood Calcitonin- decrease Ca2+ level in blood

Question 16.
A table is shown below, based on the endocrine gland and its secretions. Complete it by filling A, B, C and D. (SAY-2016)

Endocrine glandHormoneFunctions
Pancreas…. (A)…..Hypoglycemic hormone of blood
… (B)…..Thymosin

 

Provide immunity
Pituitary glandADH /

Vasopressin

…. (C)…..
Ovary…. (D)…..Support

pregnancy

Answer:
A- insulin
B – thymus
C – water reabsorption
D – Progesterone/Estrogen

Plus One Zoology Chapter Wise Previous Year Questions and Answer

Filed Under: HSSLiVE

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