An example of continues variation is

(A) Finger print (B) body size (C) tongue (D) blood transfusion


Which of the following is FALSE about auxins?

(A) They are manufactured by plants (B) they regulate plants growth rate (C) they are normally present in minute quantities within plant cells (D) they are used in the site of production



Auxins are produced in the:

(A) Petiole of leaves (B) apical regions of shoots and roots (C) epidermis of shoots and roots (D) parenchyma of roots and shoots


Hormones are transported around the mammalian body by:

(A) Nerves (B) blood (C) water (D) osmosis


Identify the INCORRECT statement. A. Helium in a balloon: an element B. Paint: a mixture

C. Tap water: an ion D. Mercury in a barometer; an element E. Urine : a mixture

Which of the following is NOT true about an estuarine habitat?
(A) Salinity is lower than that of sea water (B) salinity is higher than that of sea water (C) water is brackish (D) intermixing of sea water with fresh water

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