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

Genetic equilibrium means

In human body, which one of the following is anatomically correct?

Which of the following statements is not true w.r.t. tubectomy or tubal ligation?

Which of the following statements is not true?

In connection with circulatory system, valves are present

Assertion : Intercalated discs are important regions of cardiac muscle cells.
Reason : Intercalated discs function as boosters for muscle contraction waves.

Which of the following can’t be taken as the symptom of a female suffering from gonorrhea?

The clavicle articulates with.........of scapula.

Anatomically, the ear can be divided into three major sections called the outer ear, the middle ear and the inner ear. Which of the following statements are correct for inner car ?
(i) The organ of Corti is a structure located on the basilar membrane which contains hair cells that act as auditory receptors.
(ii) A large number of processes called stereo cilia are projected from the apical part of each hair cell.
(iii) Above the rows of the hair cells is a thin elastic membrane called tectorial membrane is present.
(iv) The vestibular apparatus is composed of three semi-circular canals and the otolith organ consisting of the saccule and utricle.
(v) Semi-circular canals contain a projecting ridge called macula.
(vi) The saccule and utricle contain a projecting ridge called cristae.
(vii) The cristae and macula responsible for maintenance of balance of the body and posture.