List of top Zoology Questions on body fluids and circulation

निम्नलिखित में से कौन सा कथन गलत है ?
The number of action potentials generated by sino-atrial node (SAN) in a healthy human is ______ per minute.
Number of amino acids in human insulin:
Consider the following statements: Assertion (A): Arteries are more elastic than veins. Reason (R): The wall of arteries has thick muscular wall and two elastic laminae.
Sporadic cancers are:
Consider the following statements: Assertion (A): Heart of human beings is myogenic. Reason (R): Pace maker in human beings is formed by modified cardiac muscles.
Match the following lists regarding blood coagulation inhibitors and factors: A) Heparin, B) Tissue thromboplastin, C) Warfarin, D) EDTA (I) Antagonistic to Vit-K, (II) Binds to calcium ions, (III) Inactivates thrombin, (IV) Activates Proconvertin
Indian carp is
Consider the following statements:
Assertion (A): In cardiac cycle, whenever ventricles relax, the second sound dup is produced.
Reason (R): Closure of semilunar valves of pulmonary valve and aortic valve.
The correct answer is
Choose the wrongly matched pair
Consider the following statements:
Assertion (A): During blood clotting, at one stage, soluble fibrin is formed
Reason (R): Factor XIII, released from platelets, converts it into insoluble fibrin fibres. Factor XIII replaces the hydrogen bonds present among the monomers of soluble fibrin with covalent bonds
Number of amino acids in polypeptide chain A and polypeptide chain B of insulin
Assertion (A): In amphibians and reptiles the blood circulation is described as incomplete double circulation.
Reason (R): They have a single ventricle in the heart, where oxygenated and deoxygenated blood are mixed and then circulated to the body parts as mixed blood.
In an ECG of a normal healthy person, the duration of the R-R interval is about:
Statement I: In the foetal heart of human beings, the interatrial septum has a pore called foramen Manro.
Statement II: A fibrous strand, known as ligamentum arteriosum, is present at the point of contact of the systemic and pulmonary arches in the human heart.
Which of the following is incorrect?
Which genotype produces Rh negative phenotype?
Spleen acts as a haemopoietic organ until the ....... month of gestation
Which of the following set of compounds constitutes vasodilators?
Assertion (A): Granulocytes are called polymorph-nuclear leucocytes
Reason (R): Nucleus of granulocytes is divided into many lobes and assumes different shapes