Q. How do Pteridophytes reproduce ?
1) With the help of budding
2) With the help of spores
3) With the help of pollens
4) With the help of seeds
Q. Which vitamin is most helpful in blood clotting?
1) Vitamin A
2) Vitamin B
3) Vitamin C
4) Vitamin K
Q. Which part of the human brain is mainly responsible for the regulation of body temperature?
1) Hypothalamus
2) Thalamus
3) Cerebrum
4) Cerebellum
Q. Which enzyme converts proteins into amino acids?
1) Lipases
2) Pepsin
3) Amylase
4) Lactase
Q. Which acid mainly causes muscle fatigue?
1) Nucleic Acid
2) Amino Acid
3) Lactic Acid
4) Fatty Acid
Q. Which one of the following naturally occurring acids is found in abundance is tomato?
1) Acetic acid
2) Citric acid
3) Oxalic acid
4) Tartaric acid
Q. Which one of the following is the structure of a cardiac muscle cell?
1) Cylindrical, Unbranched and Multinucleate
2) Spinal shaped, Unbranched and Uninucleate
3) Spinal shaped, Branched and Uninucleate
4) Cylindrical, Branched and Uninucleate
Q. Which one among the following is a free living animal?
1) Liver fluke
2) Wuchereria
3) Plasmodium
4) Planaria
Q. Sleeping sickness is caused by -
1) Trypanosoma
2) Leishmania
3) Plasmodium
4) Paramecium
Q. An antibiotic is not useful against a virus whereas a vaccine is. Which one of the following is the most appropriate reason for this?
1) An antibiotic can break RNA only, whereas virus has DNA
2) An antibiotic is a carbohydrate in its chemical nature, whereas a vaccine is a protein which works well to kill a virus
3) Only a vaccine can break the genetic material of a virus
4) A virus does not use biochemical pathways which can be blocked by an antibiotic. But a vaccine can boost an immune system to fight the virus
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