which of these elements in plants is required in small quantities only
Boron
Nitrogen
Phosphorus
Magnesium
Potassium
Correct answer is A
Boron (B) is not required by plants in high amounts, but can cause serious growth problems if it is not supplied at appropriate levels.
Which of these is not a function of the mammalian skin?
Protection against bacteria infection
Excretion of waste and water
Production of vitamin the when exposed to sun light
production of pigments to reduce temperature
Regulation of body temperature
Correct answer is D
-
Regulates body temperature.
-
Excretes toxic substances with sweat.
-
Protection of the body from harmful effects of the sun and radiation.
-
Prevents penetration of toxic substances.
Which of these is not a part of the feather of a bird?
Wing
aftershaft
Inferior umblilicus
Vane
Barbule
Correct answer is A
The feather contains a vane, afterfeather, calamus, barb, rachis.
Which of these is not associated with the movement of the toad, reptile or bird?
Hopping
Bopping
Flapping
Gliding
Pecking
Correct answer is E
Pecking is a form of feeding for birds not movement.
Which of these is not associated with tadpole stages of toad or frog?
V-shaped gland
operculum
external gills
jelly
shell
Correct answer is E
Tadpoles have soft skins and do not possess shells.
JAMB Subjects
Aptitude Tests