Question

these are from ICSE biology.. solve fasttttt

Answer 1

foetus do not develop without Placenta because Placenta is the only source which is responsible for respiration,, excretion ,,circulation and nutrition to the foetus without them foetus will die

throat and the ear they are connected by Eustachian tube and that is why the throat infection for the leads to the ear infection in humans

after entering in a dark room from lightroom the size of Pupil of our eye increase in order to take more amount of light in our eyes in the dark room and therefore for small period in the dark room we fills blind
when the diameter of our pupil get up to maximum then we start seeing in the dark room also


urine is thicker in the summer because of more presence of proteins than the normal urine

loss of Mitochondria and nucleus from the RBC of human is an adaptation so as to provide more space inside the RBC to carry the hemoglobin in it and that's why performs in oxygen carrying capacity function in better way