A xerophyte conserves water by possessing the following features except
thick cuticle
sunken stomata
broad leaves
fleshy stem
Correct answer is C
No explanation has been provided for this answer.
of the relatively constant daylight
there are more plants per square feet
of abundance of water
of constant cool temperature
Correct answer is C
No explanation has been provided for this answer.
A red blood cell haemolyses when placed in a hypotonic solution because
it contains haemoglobin
the cytoplasm is less dense
the cell lacks a wall
its pigment has a high affinity for water
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances will not be returned to the ecosystem when a mammal loses it?
Sweat
Urea
Heat energy
Carbon dioxide
Correct answer is C
No explanation has been provided for this answer.
Which of the following phenomena affects plants growth in an alkaline soil?
Excessive plasmolysis
Excessive transpiration
Excessive sunlight
Poor drainage
Correct answer is D
No explanation has been provided for this answer.