19. Single blood circulation is a characteristic of
A. bird.
B. fish.
C. lizard.
D. monkey.
E. toad.
20. The following are organs involved in homeostasis except
A. kidney.
B. liver.
C. lungs.
D. skin.
E. stomach.
21. The mineral salt needed for the production of thyroxine is
A. boron.
B. iodine.
C. iron.
D. phosphorus.
E. potassium.
22. The site for gaseous exchange in lungs is
A. alveolus.
B. bronchiole.
C. bronchus.
D. larynx.
E. trachea.
23. Epigeal germination is a characteristic feature of
Answer (2)
Single blood circulation is found in fish, crucial organs for homeostasis include the kidney and liver, and iodine is necessary for thyroxine production. Gas exchange occurs in the alveolus, and epigeal germination is notable in some plants. ;
Single blood circulation is characteristic of fish; it features a two-chambered heart. Key organs in homeostasis include the kidney and liver, while iodine is necessary for thyroxine production. Gas exchange occurs at the alveolus, and epigeal germination is a trait in plants like beans.
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