STD 12 - 8. microbes in human welfare — NEET STD 11 Science — Question

Assertion: Seminiferous tubule is a structural and functional unit of testis.
Reason: Each testis has about 250 compartments called testicular lobules and each lobule contains one to three highly coiled seminiferous tubules and it form sperms.

The seminiferous tubules of the testis are lined by the germinal epithelium consisting of

Major protein in the thick filament of skeletal muscle fibre is

Which of the following means of reducing birth-rate is not legitimate in India

Which of the following statements are not correct for transport of oxygen ?
(i) About 97 per cent of O₂ is transported by RBCs in the blood.
(ii) Each haemoglobin molecule can carry a maximum of four molecules of O₂.
(iii) Binding of oxygen with haemoglobin is primarily related to partial pressure of O₂
(iv) Partial pressure of CO₂ hydrogen ion concentration and temperature are the other factors which can interfere with this binding.
(v) A sigmoid curve is obtained when percentage saturation of haemoglobin with O₂ is plotted against the pO₂
(vi) Every 100 ml of oxygenated blood can deliver around 5 ml of O₂ to the tissues under normal physiological conditions.

Which one of the following symbols represents mating between relatives in human pedigree analysis?

Which accessory digestive gland found in cockroach?

Seed ferns originated in

Each nephron has two parts, which are