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

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)

Answer:

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

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)

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

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

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)

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)

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

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

Answer:

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)

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

Plus One Zoology Chapter Wise Previous Year Questions and Answer