STD 11 - 16. Excretory product and their elimination — NEET STD 11 Science — Question

First generation after a cross is

The function of loop of Henle is

Choose the correct pair -

On the basis of nature of nerve fibres, the nerves are

Some pure black mice were mistakenly mixed with hybrid black mice. The quickest way to discover whether one individual black mouse is pure is

Broca's area is located in:

Mechanisms of breathing vary among different groups of animals depending mainly on their habitats and levels of organisation, which option contain all correct statements ?
(i) Lower invertebrates like sponges, coelenterates, flatworms, etc., exchange O₂ with CO₂ by simple diffusion over their entire body surface.
(ii) Earthworms use their moist cuticle for exchange O₂ with CO₂.
(iii) Insects have tracheal tubes to transport atmospheric air within the body.
(iv) Special vascularised structures called gills are used by most of the aquatic arthropods and molluscs.
(v) Terrestrial forms use vascularised bags called lungs for the exchange of gases.
(vi) Among vertebrates, fishes use gills whereas reptiles, birds and mammals respire through lungs and also use skin for respiration.

Statement I: Health could be defined as a state of complete physical, mental and social well being.
Statement II: Infectious diseases are easily transmitted from one person to another.