Identify the hormone with its correct matching of source and function.
Oxytocin - posterior pituitary, growth and maintenance of mammary glands.
Melatonin - pineal gland, regulates the normal rhythm of sleep-wake cycle
Progesterone - corpus luteum, stimulation of growth and activities of female secondary sex organs
Progesterone - corpus luteum, stimulation of growth and activities of female secondary sex organs
B.
Melatonin - pineal gland, regulates the normal rhythm of sleep-wake cycle
Melatonin is a hormone present in animals, plants and microbes. In animals melatonin allowing the regulation of the circadian rhythms. Oxytocin is a neurohypophysial hormone which stimulates the muscle contraction (smooth muscle) in the wall uterus during childbirth. Progesterone is a female hormone produced by the ovaries during the release of a mature egg from an overly during ovulation.
ANF stimulates the secretion of Na and H2O by the kidneys and helps in regulating blood pressure.
Both A and B antigens on RBC but no antibodies in the plasma
Both A and B antibodies in the plasma
No antigen or RBC and no antibody in the plasma
No antigen or RBC and no antibody in the plasma
Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?
Increase in aldosterone levels
Increase in antidiuretic hormone levels
Decrease in aldosterone levels
Decrease in aldosterone levels
Fight or flight reactions cause activation of
the parathyroid glands, leading to increased metabolic rate
the kidney, leading to suppression of reninangiotensin - aldosterone pathway
the adrenal medulla, leading to increased secretion epinephrine and norepinephrine
the adrenal medulla, leading to increased secretion epinephrine and norepinephrine
How do parasympathetic neural signals affect the working of the heart?
Reduce both heart rate and cardiac output
heart rate is increased without affecting the cardiac output
Both heart rate and cardiac output increase
Both heart rate and cardiac output increase
Stimulation of a muscle fibre by a motor neuron occurs at
the neuromuscular junction
the transverse tubules
the myofibril
the myofibril
Which one of the following statements is not correct?
Retinal is the light absorbing portion of visual photopigments
In retina, the rods have the photopigments rhodopsin, while cones have three different photopigments
Retinal is a derivative of vitamin -C
Retinal is a derivative of vitamin -C
To obtain virus - free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?
Apical meristem only
Palisade parenchyma
Both apical and axillary meristems
Both apical and axillary meristems
Select the correct matching of the type of the joint with the example in human skeletal system
|
Types of joint |
Example |
|
Cartilaginous joint |
Between frontal and parietal |
|
Types of joint |
Example |
|
Pivot joint |
Between third and fourth cervical vertebrae |
|
Types of joint |
Example |
|
Hinge joint |
Between humerus and pectoral girdle |
|
Types of joint |
Example |
|
Hinge joint |
Between humerus and pectoral girdle |
Injury localised to the hypothalamus would most likely disrupt
short term memory
coordination during locomotion
executive function, such as decision making
executive function, such as decision making
