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

View Answer/Explanation

Correct Answer is A

Gambusia affinis is larvivorous, which controls the mosquitoes by eating mosquito larvae, insects and crustaceans. 

2. Which of the following is not a digestive enzyme in the human system?

A. Gastrin

B. Ptyalin

C. Trypsin

D. Pepsin

View Answer/Explanation

Correct Answer is A

3. Which among the following is not a good source of nutritional calcium?

A. Ragi

B. Rice

C. Skimmed Milk

D. Egg

View Answer/Explanation

Correct Answer is A

Read More ⇒ Botany Objective Questions and Answers

4. The normal temperature of human in the Kelvin scale is-

A. 237

B. 286

C. 310

D. 313

View Answer/Explanation

Correct Answer is A

In degree celsius, it is 37. So 273+37 = 310

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

View Answer/Explanation

Correct Answer is B

Amnion protects by a fluid-filled space called an amniotic cavity.

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