STD 11 - 18. Neural control and coordination — NEET STD 11 Science — Question

Statement I: Lower invertebrates like sponges, coelenterates, flatworms etc exchange O₂ with CO2 by simple diffusion.
Statement II: Amphibians like frogs can respire through their most skin (cutaneous respiration) only.

Which statements are true regarding Mendelian disorder ?
(i) Haemophilia is a X - linked recessive trait shows transmission from carrier female to male progeny.
(ii) Haemophilia is a disorder in which a vital factor for clotting of blood is lacking due to this, in an affected individual a simple cut will result in non-stop bleeding.
(iii) The family pedigree of Queen Victoria shows a number of haemophilic descendents as she was a carrier of the disease.
(iv) All type of anaemia is an autosome linked recessive trait.
(v) Sickle-cell anaemia is due to a mutant allele on chromosome 11.
(vi) Sickle-cell anaemia disease is controlled by two pair of allele.
(vii) The mutant haemoglobin molecule of sickle cell RBC undergoes polymerisation under high oxygen tension.

Endoplasmic reticulum or sarcoplasmic reticulum plays a major role during

A comparison of the volume of the filtrate formed per day 180 litre per day with that of the urine released (1.5 litres), suggest that nearly 99 per cent of the filtrate has to be reabsorbed by the renal tubules. Which statement true for reabsorption ?
(i) Nearly all of the essential nutrients, 70-80 per cent of electrolytes and water are reabsorbed by this segment.
(ii) Reabsorption in loop of Henle is maximum.
(iii) Loop of Henle plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid.
(iv) The descending limb of loop of Henle is permeable to water but almost impermeable to electrolytes.
(v) The ascending limb is impermeable to water but allows transport of electrolytes actively or passively.
(vi) Conditional reabsorption of Na and water takes place in PCT.
(vii) Large amounts of salt could be reabsorbed from collecting duct to produce a concentrated urine.

The first mammals were like.....

The synthetic drug structurally similar to adrenalin are

The strand which does not code for anything is referred to as-

It does not show open circulatory system