Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
A researcher is studying the hormonal control of spermatogenesis. He administers a drug that selectively blocks the receptors for a specific hormone in the testes. As a result, he observes a significant decrease in the rate of spermatogenesis, but testosterone levels remain normal. Which hormone's receptors are MOST likely being blocked by the drug?
LH
FSH
Testosterone
Inhibin
Which hormone plays a crucial role in regulating water reabsorption in the kidneys, leading to the formation of concentrated urine?
Aldosterone
Renin
Atrial natriuretic peptide (ANP)
Antidiuretic hormone (ADH)
A decrease in the production of which hormone would likely result in the formation of dilute urine?
Aldosterone
Antidiuretic hormone (ADH)
Renin
Angiotensin II
A decrease in blood pressure/volume will NOT stimulate the release of which hormone?
Antidiuretic hormone (ADH)
Renin
Atrial natriuretic peptide
Aldosterone
Which of the following hormones is NOT released in response to hypotension (low blood pressure)?
Antidiuretic hormone (ADH)
Renin
Atrial natriuretic peptide
Aldosterone
Which of these hormones has the opposite effect on blood pressure compared to ADH and renin?
Atrial natriuretic peptide
Aldosterone
Antidiuretic hormone (ADH)
Renin
Metamorphosis in cockroach is regulated by
Corpora cardiaca
Brain
Thyroid
Corpora allata
Different colours of frog skin are controlled by
Hormones
Melanocytes
Nervous system
Both (a) and ©
Different colours of frog skin are controlled by
Hormones
Melanocytes
Nervous system
Both (a) and ©
Find the correct option regarding mechanism of urine formation in man.
It involves only filtration and reabsorption
It involves glomerular filtration, tubular reabsorption and tubular secretion
It involves only filtration and secretion
It involves only tubular secretion and reabsorption
