STD 12 - 6. evolution — NEET STD 11 Science — Question

In pea hybrids between red flowered and white flowered strains were crossed back to pure red flowered strain. The progeny of this cross will have

Assertion: In females, oxytocin responsible for child birth and milk ejection from the mammary gland.
Reason: Oxytocin act on the smooth muscles and stimulates their contraction.

The secretin promotes the release of

Which one of the following statements are correct ?
(A) Conditional reabsorption of Na⁺ and water occur in PCT segment.
(B) The flow of filtrate in two limbs of Henle and flow of blood in two limbs of Vasa recta forms counter current pattern of flow.
(C) The osmolarity in inner medulla is about 300 mOsmolL^-1 and in cortex is about 1200 mOsmo1L^-1.
(D) In counter current mechanism, NaCl is transported by the ascending limb of Henle's loop which is exchanged with descending limb of vasa recta.
(E) Small amount of urea enter the thick segment of ascending limb of Henle's loop which is transported back to interstitium by the collecting tubule in counter current mechanism.
(F) Human kidneys can produce urine nearly 4 times concentrated than the initial filtrate formed.
(G) An excessive loss of fluid from the body can activate osmoreceptors which stimulate the hypothalamus to release ADH/vasopressin.
(H) Renin converts angiotensinogen in blood to angiotensin I and further to angiotensin II.
(I) Angiotensin II activates the adrenal cortex to release aldosterone.
(J) Aldosterone causes reabsorption of K⁺ and water from the distal parts of the tubule.
(K) An increase in blood flow to the ventricle of the heart can cause the release of ANF.
Choose the correct option given below :-

Sea fan belongs to

Trachea divides into right and left

Petromyzon is a connecting link between

’Marijuana ' is extracted from

In the sewage treatment bacterial flocs are allowed to sediment in a settling-tank. This sediment is called as