STD 11 - 6. Anatomy flowering plants — BIOLOGY STD 11 Science — Question

$(I)$ $RBCs$ are formed in the white bone marrow in adults.

$(II)$ $RBCs$ have red colour because presence of protein called haemoglobin.

$(III)$ Nucleus is present in $RBC$ in most of the mammals and are biconcave in shape.

$(IV)$ A healthy individual has $12 -16\, gms$ of haemoglobin in every $1000\, ml$ of blood.

$II.$ Protection of leaves from microbes

$III.$ Gaseous exchange

$IV.$ Reduction in the rate of transpiration through epidermal cells due to trichomes

Which of the function of epidermis is/are relevant from the above given statements?

$I.$ Blood vessel leading to the glomerulus is called efferent arteriole

$II.$ Vasa-recta, peritubular capillaries and glomerulus, all have blood

$III.$ Cortical nephrons have highly reduced vasa-recta

$IV.$ Vasa-recta runs parallel to the Henle's loop in the juxta-medullary nephron