Which of the following components make up an ecosystem?
Decomposers, animals and non-living factors
Living and non-living factors
Plants and non-living factors
Plants decomposers and non-living factors
Correct answer is B
No explanation has been provided for this answer.
A community reaches a climax when
only pioneer organisms are present
new habitats are constantly being formed
there is an introduction of new plants and animal species within the community
the composition and size of a community remains constant over a long period
Correct answer is D
No explanation has been provided for this answer.
A person suffering from obstruction of the bile duct is advised not to eat fats and oil because
bile digests fats and oil
fats and oil can only be absorbed whenbile is absent
bile emulsifies fat and oil
bile adds water to digesting food
Correct answer is C
No explanation has been provided for this answer.
Which of the following organs of the alimentary canal is not correctly matched with its function?
Gall bladder- stores bile
Liver - stores glycogen
Appendix - releases enzymes
Teeth = grind food
Correct answer is C
No explanation has been provided for this answer.
The colour change to be observed in step IV is
blue-black
brick-red
purple
violet
Correct answer is B
A positive test with Benedict's reagent is shown by a color change from clear blue to a brick-red precipitate.