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Control and Coordination Test 24

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Control and Coordination Test 24
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  • Question 1
    1 / -0
    Which of the following hormone helps the body in extreme conditions?
    Solution
    Cortisone secreted by the Peripheral Cortex of the Adrenal Gland helps body during extreme condition such as high or low temperature. It also helps in burns and several infections.
  • Question 2
    1 / -0
    You see a dog running towards you and you felt that your respiration and heart beat has started increasing and then you also started running. Which hormone has been responsible for this?
    Solution
    • The adrenal medulla secretes adrenalin hormone and noradrenaline hormone in response to the stress of any emergency situations (for instance, observing a fear from a dog, tiger, bat, etc). This hormone increases sweating, heart beat, piloerection, etc. 
    • Cortisol is secreted by the adrenal cortex. It stimulates RBC production, maintains the cardiovascular system, kidney functions, and has the property of anti-insulin.
    • Insulin hormone is secreted by the pancreas gland, it promotes protein synthesis and glycogenesis (converts glucose into glycogen).
    • Thyroxine release from the thyroid gland. It regulates the metabolic rate of the body and BMR, body temperature, metamorphosis, mental development, etc.
    Hence, the correct answer is option A.
  • Question 3
    1 / -0
    Which cells of the Pancreas helps in conversion of Glycogen to Glucose?
    Solution
    The pancreas releases glucagon, which is produced by Alpha cells of Pancreas, when the concentration of insulin (and indirectly glucose) in the bloodstream falls too low. Glucagon causes the liver to convert stored glycogen into glucose, which is released into the bloodstream.

  • Question 4
    1 / -0
    Which of the following is not found in DNA?
    Solution
    The nucleic acid is made up of five major nitrogenous bases. These nitrogenous bases are $$\text{adenine (A), guanine (G),}$$ $$\text{thymine (T), and cytosine (C).}$$ Adenine is always paired with thymine, and guanine is always paired with cytosine. These are known as base pairs. $$\text{Uracil is only present in RNA,}$$ by replacing thymine. 
    So, the correct answer is option A.
  • Question 5
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    A farmer suggested his friend to spray gibberellins to sugar cane plants because it 
  • Question 6
    1 / -0
    Chemical messengers are 
    Solution

  • Question 7
    1 / -0
    Which is the functional unit of nervous system? 
    Solution
    Neurons or nerve cells are structural and functional units of nervous system.
    So, the correct answer is 'Neurons'
  • Question 8
    1 / -0
    Which hormone is sprayed on rosette plant of Cauliflower to convert it into a long shoot?
    Solution
    GA when sprayed on rosette plant of cauliflower converts it into long shoot as this phytohormone brings about the elongation of the internodes.
    So, the correct answer is 'GA.'
  • Question 9
    1 / -0
    Plant signaling pathway is antagonistically regulated by?
    Solution
    Abscisic acid is also known as stress hormone and induces seed dormancy during unfavorable conditions, while Gibberellins helps to tide over dormancy by activating $$\alpha$$ amylase and other enzymes that help in mobilizing the nutrients to the developing embryo and imbibition of water by the seed.
    So, the correct answer is 'Abscisic acid and Gibberellins'.
  • Question 10
    1 / -0
    Any change in the environment to which an organism responds is called_________.
    Solution
    •  A stimulus is defined as “any kind of detectable change (physical or chemical) in the environment of an organism that results in some functional activity”.
    • The plant responds to many types of external stimuli, such as light, gravity, weather, and touch.
    • For example, sunlight acts as a stimulus for plants that helps them grow or move towards it.
    • In the case of animals,the external stimulus includes touch and pain, vision, smell, taste, sound, and balance (equilibrium). 

    Option B is correct.
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