During emergency, which of the following hormone is secreted ?
Aldosterone
Thyroxine
Adrenalin
Calcitonin
Which of the following is a transparent tissue ?
Tendon
Fibrous cartilage
Hyaline cartilage
All of the above
Which of the following cell type is capable of giving rise to other cell types in sponges ?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
The vitamin which is essential for blood clotting is
vitamin-A
vitamin-B
vitamin-C
vitamin-K
D.
vitamin-K
Vitamin-K is essential for clotting of blood. It is necessary for the synthesis of various blood clotting factors like prothrombin (II), proconvertin (VII) stuart power factor (X) times Christmas factor. It is obtained from cabbage, spinach and other green leafy vegetables.
Vitamin- A is necessary for synthesis of rhodopsin of rod cells and iodopsin of cone cells of the retina of eye.
Vitamin- D helps in the absorption of calcium and phosphorus.
Vitamin- B serves as a coenzyme in the conversion of pyruvate into acetyl Co- A and - ketoglutarate.
Malpighian tubµles are
excretory organs of insects
excretory organs of frog
respiratory organs of insects
endocrine glands of insects