STD 11 - 17. Locomotion and movement — NEET STD 11 Science — Question

If a haemophilic man marries a woman carrier (heterozygous) for haemophilia, what would be the possibility that their daughter would be haemophilic

Respiratory control centre is

Which one of the following is a correct match?

Normal activities of the heart are regulated intrinsically, i.e., auto regulated by specialised muscles (nodal tissue), hence the heart is called myogenic. Read following statement and choose correct option for right statements ?
(i) Mass of this tissue is seen in the lower left corner of the right atrium close to the atrio-ventricular septum called the sino-atrial node (SAN).
(ii) A bundle of nodal fibres, atrioventricular bundle (AV bundle) continues from the AVN which passes through the atrio ventricular septum is known as bundle of His.
(iii) Bundle of His immediately divides into a right and left bundle which form Purkinje fibres.
(iv) The nodal musculature has the ability to generate action potentials without any external stimuli, i.e., it is autoexcitable.
(v) The SAN can generate the maximum number of action potentials, i.e., 90-95 min.
(vi) Our heart normally beats 70-75 times in a minute (average 72 beats min).

A bird excretes nitrogenous waste materials in the form of

An organism with two identical alleles for a given trait is

In man ribs are attached to

Statement I: The neural system provides an organised network of point-to-point connections for a quick coordination.
Statement II: The endocrine system provides chemical integration through hormones.