1. The release of which one of the following into ponds and wells helps in controlling the mosquitoes?
A. Gambusia Fish
B. Crab
C. Snail
D. Dog Fish
2. Which of the following is not a digestive enzyme in the human system?
A. Gastrin
B. Ptyalin
C. Trypsin
D. Pepsin
3. Which among the following is not a good source of nutritional calcium?
A. Ragi
B. Rice
C. Skimmed Milk
D. Egg
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4. The normal temperature of human in the Kelvin scale is-
A. 237
B. 286
C. 310
D. 313
5. Which one of the following is a membrane that protects the developing embryo from desiccation?
A. Chorion
B. Amnion
C. Allantois
D. Yolk Sac