Biology

Endocrine and Exocrine Glands

594 Questions

The endocrine and exocrine glands topic explores the human body's essential secreting structures, including the pituitary, thyroid, and salivary glands. Questions often focus on gland locations, their specific secretions, and crucial physiological functions. This subject is a core component of the general science syllabus across many highly competitive examinations.

Master endocrine glandsPituitary gland locationSalivary gland functionsThyroid and ductless glandsApocrine sweat glands

Endocrine and Exocrine Glands Questions

Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

Sebaceous glands:

  1. help keep the skin soft

  2. are involved in body temperature regulation

  3. are responsible for breaking out in a cold sweat

  4. are found in the external auditory meatus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sebaceous glands work with sweat producing eccrine glands to regulate body temperature.

So, the correct option is 'are involved in body temperature regulation'.

Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

Which of the following is not an endocrine gland?

  1. Pituitary gland

  2. Thyroid gland

  3. Pineal gland

  4. Salivary gland
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
There are two types of glands namely, endocrine glands and exocrine glands. 
Exocrine glands are those that produce and secrete substances onto an epithelial surface of the body through a duct. Examples include sweat, salivary, mammary, ceruminous, lacrimal, sebaceous, and mucous glands.
Endocrine glands are those that secrete their products directly into the bloodstream. Examples include pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands.

So the answer is option D.
Multiple choice biology endocrine glands different type of gland glands in humans coordination in human beings- chemical control

Integrative system in the body are

  1. Endocrine system

  2. Nervous system

  3. Blood vascular system

  4. Both endocrine and nervous system
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Both endocrine and nervous system are the integrative system in the body. 
The nervous system has three overlapping functions. These functions are based on the sensory input, integration and motor output. The nervous system is a highly integrated system, the control center of which is the brain.
Endocrine system has organs such as Thyroid, Pituitary glands that secrete hormones which regulate body functions. Hence, option D is correct. 
Multiple choice biology control and coordination in living organisms enzymes and hormones hormones coordination in human beings- chemical control

The chemical messengers produced in ductless glands are:

  1. vitamins

  2. lipids

  3. antibiotics

  4. hormones
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The chemical messengers produced in ductless glands are called hormones. Hormones are produced by the endocrine system (composed of glands) but are transported to different parts of the body through the bloodstream.


 Endocrine glands have a rich blood supply through which hormones travel to reach their target organs. Hormones alter the metabolism of target organs by increasing or decreasing their activity.

Hence, the option $D$ is correct.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

Which name is associated with the chemical substances produced in endocrine ductless glands?

  1. Vitamins

  2. Antigens

  3. Bile acids

  4. Hormones
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hormone is a chemical substances produced in endocrine ductless glands. 


These glands produce chemical messengers called hormones which pass into the bloodstream for circulation throughout the body.

 Hormones are secreted by cells into the extracellular fluids and regulate the metabolic functions of other cells in the body.

Option D is correct.

Multiple choice evs more about organ system introduction to excretory system structures and functions related to the excretory system introduction to excretion

Which cutaneous gland of pigeon produces 'pigeon milk'?

  1. Uropygeal

  2. Preen

  3. It is not produced by cutaneous but the crop gland

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds. They are found among all pigeons and doves, where they are referred to as pigeon milk. Crop milk is also produced by flamingos and some penguins.

Multiple choice biology the reproductive system menstruation male reproductive system in humans male reproductive system reproduction in plants and animals

Which gland is responsible for the secondary sexual characters in boys?

  1. Ovary

  2. Pancreas

  3. Adrenal gland

  4. Testis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Testes are the primary reproductive organs which produce sperms and hormone known as testosterone. This hormone is important for sexual development and puberty i.e., development of secondary sexual characteristics like facial hair, sexual behaviour etc.
The ovary is the female reproductive organ which produces the mature ovum which further fuses with sperm to form a zygote. 
Pancreas is a heterocrine gland which secretes insulin, glucagon and somatostatin as endocrine and pancreatic juice an exocrine gland.
Adrenal are endocrine glands, which secretes various cortisol.
Thus, the correct answer is option D.

Multiple choice biology life processes: control and coordination control and coordination in plants growth in plants chemical coordination in plants animal senses sense organs in animals sense organs in humans

Which of the following is a plant hormone?

  1. Insulin

  2. Thyroxin

  3. Oestrogen

  4. Cytokinin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Insulin is secreted by Islets of Langerhans of the pancreas and serves to lower the blood glucose level by stimulating the uptake of glucose by cells, specifically muscle cells, liver cells and adipose tissues cells. 

Thyroxine is a thyroid hormone which targets all tissues and stimulates metabolic rate, growth and development. 
Oestrogen is the female sex hormone secreted by developing follicles in the ovary. It serves to stimulate the growth of the uterus and the vagina, is necessary for egg maturation as well as for the development of the secondary sex characteristics in females. Thus, options A, B and C are incorrect as these hormones are animal hormones. 
Cytokinins are the plant growth hormones that regulate the cell division in root and shoot of the plant both in vivo and in-vitro.
So, the correct answer is 'Cytokinin' 

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

Eye lashes are lubricated by

  1. Ceruminous gland

  2. Pituitary gland

  3. Lacrimal gland

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The almond-shaped glands in the eyes present above each eyeball are called lacrimal glands. Thes glands are called tear gland because they secrete the fluid called tears. These glands have their openings between the eyelashes. Water, salts and bactericidal protein such as lysozyme are components of tear. The secretion of this glands is involved in the clearance of dust, grit and microorganisms in the cornea. They are also involved in the lubrication of eyes and eyelashes. Thus the correct answer is option C.

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

Harderian gland occurs in 

  1. Lizard

  2. Frog

  3. Birds

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The harderian gland is a gland found within the eye's orbit, which occurs in tetrapods (reptiles, amphibians, birds and mammals) that possess a nictitating membrane. The gland can be compound tubular or compound tubuloalveolar, and the fluid it secretes (mucous, serous or lipid) varies between different groups of animals. In some animals it acts as an accessory to the lacrimal gland, secreting fluid that eases movement of the nictitating membrane. 

Multiple choice biology human brain and sense organs introduction to sense organs eyes and their function the structure and function of the eye

Which of the following glands are found in majority of mammals associated with their eyes?

  1. Harderian and meibomian

  2. Lacrimal and sudorific

  3. Lacrimal and meibomian

  4. Harderian and lacrimal gland
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The lacrimal gland lies within the orbit on the outer portion of the upper eye. The gland continually secretes tears, which moisten, lubricate, and protect the eye. Meibomian gland is a type of gland in the eyelids, that makes a lubricant called as sebum, which is discharged through tiny openings in the edges of the lids. It is responsible for the supply of meibum, an oily substance that prevents evaporation of the eye's tear film and frictionless blinking.

Multiple choice biology control and coordination in living organisms hormones coordination in human beings- chemical control endocrine system in humans

Ecdysone is secreted by

  1. Prothoracic gland

  2. Corpora allata

  3. Corpora cardiaca

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Insects go through a process of moulting during their life cycle. The process is controlled by hormones like moulting hormone and juvenile hormones. Ecdysone is a steroidal prohormone of the major insect molting hormone, which is secreted from the prothoracic glands. Insect molting hormones (ecdysone and its homologues) are generally called as ecdysteroids.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food skeletal system and muscles assimilation of food and egestion busy at work - our internal organs

Heterocrine gland connected with digestive system is

  1. Liver

  2. Pituitary

  3. Pancreas

  4. Testis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A heterocrine gland (also known as a mixed gland) performs both exocrine and endocrine functions. The pancreas secretes digestive enzymes into the duodenum (exocrine) and hormones like insulin and glucagon into the blood (endocrine).