381. Severe deficiency of Vitamin D results in __.
A: Rickets
B: Scurvy
C: Night blindness
D: None of these
382. From an ecological point of view, human beings are taken as:
A: Decomposer
B: Consumers
C: Producers
D: All of these
383. The major cause of land pollution is:
A: Pesticides
B: Chemical fertilizers
C: Insecticides
D: All of these
384. The sharp-bitter taste of unripe fruits is due to the high concentration of:
A: Phenolic compounds
B: Volatile compounds
C: Organic acids
D: Starch
385. The use of antibiotics is a very effective way of killing disease-causing bacteria. Sometimes people don’t finish all of their pills. This can result in:
A: Some bacteria left unkilled
B: Production of more bacteria
C: Bacteria becoming sensitive to antibiotics
D: Bacteria becoming resistant to antibiotics
386. Flesh eaters are called:
A: Omnivores
B: Carnivores
C: Herbivores
D: Scavengers
387. Chromosomes are made up of:
A: DNA only
B: DNA and RNA
C: Proteins only
D: DNA, RNA, and Proteins
388. Plants can be made disease-resistant by:
A: Heat treatment
B: Hormone treatment
C: Colchicine treatment
D: Breeding with their wild relatives
389. Important ingredients used in Vicks vapor rub are obtained from the plant?
A: Cinnamomum camphora
B: Cinnamomum zelamicum
C: Curcuma longa
D: All of these
390. Which of the following is both endocrine and exocrine gland:
A: Thyroid
B: Pancreas
C: Parathyroid
D: All of these
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