Tag: biology

Questions Related to biology

The ductless glands in the human body which secrete hormones are called as

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

  1. Exocrine glands

  2. Endocrine glands

  3. Epithelial glands

  4. Metabolic glands

Show answer
Correct Option: B
Explanation:

a) Endocrine glands are the ductless glands that release their secretion (hormones) directly into the bloodstream. The released hormones affect the target cells which specifically carry their receptors.

 b) Exocrine glands release their secretions by duct into the target cells/organs only. 
c) All glands are formed by invagination or infolding of glandular epithelium and thus, are called as epithelial glands. It includes both endocrine and exocrine glands. 
d) Glands that secrete the substances which regulate the metabolic processes are known as metabolic glands. These can be both endocrine and exocrine in nature. 
So, the correct answer is option B.

Which of the following is not true?

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

  1. The endocrine system is composed of ductless glands.

  2. Contents of the endocrine system are released into the blood stream.

  3. The Mammary gland is part of the endocrine system.

  4. Exocrine glands are not part of the endocrine system.

Show answer
Correct Option: C
Explanation:
The mammary gland is a gland located in the breasts of females that is responsible for lactation, or the production of milk. Mammary glands are a part of exocrine system. They have ducts and hence not a part of endocrine system.

Which type of signaling mechanism is most likely used for communication between two neighboring cells?

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

  1. Steroid hormones

  2. Molecules released in the extracellular space

  3. Endocrine signaling

  4. Molecules released in the bloodstream

Show answer
Correct Option: B
Explanation:

  •  The extracellular ("outside of cell") ligand-binding, a hydrophobic domain extending through the membrane.
  • This type  of signaling mechanism is most likely used for communication between two neighboring cells is by extracellular space,
Hence, the type of signaling mechanism is most likely used for communication between two neighboring cells is by Molecules released in the extracellular space.
So, the correct answer is 'Molecules released in the extracellular space'.

I am gland with ducts. My secretion may be enzyme, sweat, oil or tear. My ducts transports these secretion close to the source of production. Who am I?

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

  1. Thyroid gland

  2. Exocrine gland

  3. Endocrine gland

  4. Adrenal gland

Show answer
Correct Option: B
Explanation:

Exocrine gland is the right answer because exocrine glands are glands with ducts unlike endocrine glands. Salivary gland, sweat gland etc are exocrine gland.

Salivary glands are example of 

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

  1. Exocrine gland

  2. Endocrine gland

  3. Both of the above

  4. All of the above

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Correct Option: A

Proprioreceptors are found in

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

  1. Sole of feet

  2. Adrenal cortex

  3. Hypothalamus

  4. Medulla

Show answer
Correct Option: A
Explanation:
Proprioreceptors are the receptors sensitive to internal stimuli. The stimulus is received within the body. These respond to position and movement. They are considered as sixth sense of body. Such receptors can be found in sole of feet as they respond to change in position of body.
So, the correct answer is 'Sole of feet'.

Integration system in the body is 

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

  1. Nervous system

  2. Endocrine system

  3. Circulatory system

  4. Nervous and Endocrine system

Show answer
Correct Option: D
Explanation:

  • Nervous system is a coordinated network of nerve cells and fibres by which nerve impulses are transmitted throughout the body.
  • Endocrine system consists of glands that produce hormones.
  • Circulatory system consists of heart and blood vessels which supply throughout the body.
In our body, nervous system and endocrine system jointly integrate all the activities as nervous system directs endocrine system to secrete hormones that act on the target organs.
So, the correct answer is 'Nervous system and Endocrine system'.

Endocrine glands are those glands which pour their secretion directly into 

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

  1. Ducts

  2. Substrate

  3. Blood

  4. All of the above

Show answer
Correct Option: C
Explanation:
Endocrine glands are the ductless glands which secrete their products directly in the blood from where they reach the target organs and affect their functioning and regulation. For example, pituitary gland, hypothalamus, pineal gland etc. On the other hand, the glands which secrete their products through ducts are called exocrine glands. 
So, the correct answer is 'Blood'.

A heterocrine gland is one which

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

  1. Has two distinct parts

  2. Serves a double function of exocrine and endocrine gland

  3. Produces two types of hormones

  4. Occurs in two places

Show answer
Correct Option: B
Explanation:
Heterocrine glands are the glands which act both as exocrine and endocrine glands. Exocrine glands are the glands that secrete their products through ducts whereas endocrine glands are the ductless glands which secrete their products directly into the blood. For example, in humans, Pancreas is a heterocrine gland. It secretes insulin hormone into blood and act as endocrine gland and when it secretes digestive enzymes and juice through pancreatic duct, it acts as exocrine gland.
So, the correct answer is 'Serves a double function of exocrine and endocrine gland'.

Which of these is not an endocrine gland? 

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

  1. Liver

  2. Pancreas

  3. Testes

  4. Thymus

Show answer
Correct Option: A
Explanation:

Endocrine glands are the ductless glands that secrete their products into bloodstream from where they are carried to the target organs. Pancreas, testes and thymus are endocrine glands as they secrete hormones. Pancreas secrete insulin and glucagon, testes secrete testosterone and thymus secrete thymosin hormone. Liver is not an endocrine gland instead, it is a digestive organ which secretes bile juice which is necessary for emulsification of fats.
So, the correct answer is 'Liver'.