Biology - Study Mode
[#516] Which of these plants grow in an environment that is neither very wet nor very dry?
Correct Answer
(A) Mesophytes
Explanation
Solution: Mesophytes are terrestrial plants which are adapted to neither a particularly dry nor particularly wet environment. An example of a mesophytic habitat would be a rural temperate meadow, which might contain goldenrod, clover, daisy, and Rosa multiflora.
[#517] Which statement describes decomposers?
Correct Answer
(C) Decomposers are those organisms that recycle matter in the ecosystem
Explanation
Solution: Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition.
[#518] Pellagra and Scurvy are caused by which pair of vitamin deficiency respectively ________
Correct Answer
(B) Vitamin B-12 and Vitamin C
Explanation
Solution: Pellagra and Scurvy are caused by Vitamin B-12 and Vitamin C deficiency respectively.
[#519] The kilo calories of energy released from one gram of fats is
Correct Answer
(C) 9.45
Explanation
Solution: Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.
[#520] Deficiency of fluoride leads to which one of the following health problems?
Correct Answer
(A) Tooth caries
Explanation
Solution: Fluoride deficiency is a disorder which may cause increased dental caries due to a lack of fluoride in the diet. Dental caries or tooth decay is the breakdown of dental tissues by the acidic products released by the "bacterial fermentation of dietary carbohydrates”.