Homeostasis

Q. The maintenance of relatively constant internal environment is called

1. Homeostasis
2. Ectotherms
3. Homeobox
4. Homeotherms

Q. The tubules of each lobe join to form a

1. Mammary ampulla

2. Mammary tubule
   
3. Mammary duct
   
4. Lactiferous duct
   

Q. Urethral meatus refers to the:

1. Opening of vas deferens into urethra
2. External opening of the urinogenital duct
3. Muscles surrounding the urinogenial duct
4. Urinogenital duct

Q.

What does the maintenance of homeostasis typically involve?

Q. The maintenance of relatively constant internal environment is called

1. Homeostasis
2. Ectotherms
3. Homeobox
4. Homeotherms

Q.

What is homeostasis in the human body?

Q. The graph below illustrates the changes in blood sugar concentration after a healthy man has drunk a glucose solution.


Which one of the following graphs would apply to a diabetic man in similar circumstances?

1. 
2. 
3. 
4. 

Q. If the unfavourable conditions in the environment are localised or short-lived, which of the following responses is/are more likely to occur in organisms?

I. Hibernation
II. Diapause
III. Migration

1. I, II and III
2. Only I and III
3. Only III
4. Only II and III

Q. Select the odd one out with respect to Lamarckism.

Q. The graph given below represents the body temperature of organisms with respect to their external or surrounding (ambient) temperature. Identify the organisms which can follow the path A and B.

1. A-Mammals, B-Birds
2. A-Birds, B-Mammals
3. A-Mammals, B-Amphibians
4. A-Amphibians, B-Mammals

Q. The property by which, biological systems maintain a stable internal environment is ___.

Q.

What is the role of homeostasis?

Q. Which one process can operate within relatively narrow range of temperature, pH and osmolarity ?

1. Internal regulation
2. External environmental factors
3. Osmotic concentration
4. All of these

Q. The property by which the biological systems maintain a stable internal environment despite varying external conditions is known as .

1. thermoregulation
2. homeostasis
3. osmoregulation
4. vasodilation

Q.

The maintenance of relatively constant internal environment is called:

1. exotherms

2. homeostasis

3. endotherms

4. stenothermals

Q. The viscous fluid that fills the cavity of the antrum is called ________.

1. cerebrospinal fluid
2. blood plasma
3. hyaluronic acid
4. liquor folliculi

Q. Give one example for each of the following
(b) Aquatic mammals.

Q. Organisms that are capable of maintaining constant body temperature are called

1. Regulators
2. Conformers
3. Both A and B
4. Ectotherms

Q. The property by which the biological systems maintain a stable internal environment despite varying external conditions is known as .

1. thermoregulation
2. homeostasis
3. osmoregulation
4. vasodilation

Q. The property by which, biological systems maintain a stable internal environment is ___.

Q. The viscous fluid that fills the cavity of the antrum is called ________.

1. hyaluronic acid
2. cerebrospinal fluid
3. blood plasma
4. liquor folliculi

Q. As the water evaporates from the skin of a swimmer who has just left a pool, the swimmer begins to shiver and goose bumps form on his skin. As the blood vessels under his skin move more internally, the goose bumps that form and the shivering are reactions to counteract the lowering of body temperature. After the swimmer has dried off the shivering stops and his body temperature returns to normal. This is an example of

1. Disequilibrium
2. A negative feedback mechanism
3. Product inhibition
4. A positive feedback mechanism

Q.

What is homeostasis?

Q. The property by which the biological systems maintain a stable internal environment despite varying external conditions is known as .

1. thermoregulation
2. homeostasis
3. osmoregulation
4. vasodilation

Q. Which part of the man acts as thermostat?

1. Hypothalamus
2. Skin
3. Medulla oblongata
4. All the above