protein
starch
fat
mineral salt
Correct answer is C
No explanation has been provided for this answer.
Trace elements are required by plants mainly for the
formation of pigments and enzymes
production of energy and hormones
manufacture of carbohydrates
manufacture of proteins
Correct answer is A
No explanation has been provided for this answer.
the part of the stomach nearer the gullet is called the
epiglottis
cardiac sphincter
duodenum
pyloric sphincter
Correct answer is B
No explanation has been provided for this answer.
The nitrogenous substance that is excreted by birds in order to conserve water is
ammonia
urea
uric acid
nitric acid
Correct answer is C
No explanation has been provided for this answer.
The group of insects that undergoes complete metamorphosis is
houseflies, beetles, and cockroaches
cockroaches, grasshoppers, and bees
houseflies, beetles, and butterflies
aphids, grasshopper, and butterflies
Correct answer is C
No explanation has been provided for this answer.