MEDIUM
Earn 100

What is true about pheromones?

50% studentsanswered this correctly

Important Questions on Chemical Co-ordination and Integration

EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Stimulation of a muscle fiber by a motor neuron occurs at:
MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Choose the names of pheromones from the terms given in the box.
Cortisol, Bombykol, Gibberellin, Civeton
MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Receptor sites for neurotransmitters are present on
MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics

Match List I and List II

  List I   List II
A CCK I Kidney
B GIP II Heart
C ANF III Gastric gland
D ADH IV Pancreas

Choose the correct answer from the options given below: 

MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Study the following and pick up the correct combinations
S.No Ductless Gland Hormone Function
(I) Thyroid Thyroxine Regulation of basal metabolic rate
(II) Parathyroid Calcitonin Lowers calcium in blood
(III) Pineal ADH Darkening of skin
(IV) Pituitary Prolactin Enlargement of mammary glands
MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics

What is an endocrine gland? What is the difference between an endocrine and an exocrine gland? Name the gland performs both endocrine as well as exocrine functions.

HARD
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics

The pituitary gland and hypothalamus are shown in the figure with labels 1 to 5. Identify them correctly.

Question Image

EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Inhibition of gastric and stimulation of gastric, pancreatic and bile secretions are controlled by hormones
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Receptors for protein hormones are located
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics

Select the right match of endocrine gland and their hormones among the options given below:

A. Pineal i. Epinephrine 
B. Thyroid ii. Melatonin
C.Ovary iii. Estrogen
D. Adrenal medulla iv. Tetraiodothyronine
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
In the homeostatic control of blood sugar level, which organs function as modulator and effector respectively?
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Which of the following is not necessarily a property of all hormones?
MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
What are hormones?
MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Find the incorrect statement about the endocrine system.
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Mark the odd one w.r.t. exocrine glands:
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
The iodine derivative of amino acid tyrosine brings about effects on target cells by which of the following?
EASY
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
The effect of different hormones on the body can be best said to bring about
HARD
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics
Which of the following statements is true/false?

I. Calcitonin regulates the metabolism of calcium.

II. Oxytocin stimulates the contraction of uterine muscles during childbirth.

III. Grave's disease is caused by malfunctioning of the adrenal gland.

IV. ADH stimulates the absorption of water and increases urine production.
MEDIUM
Biology>Human Physiology>Chemical Co-ordination and Integration>Hormones and Its Characteristics

Represent the union of two sets by Venn diagram for each of the following.

X={x | x is a prime number between 80 and 100}

Y={y | y is an odd number between 90 and 100}