Answer 1. Artery

Explanation: The pulmonary artery carries blood from the right side of the heart to the lungs to pick up a fresh supply of oxygen.

 

Answer 2. Ascorbic acid

Explanation: Vitamin B complex consists of 8 vitamins namely B1, B2, B3, B5, B6, B7, B9 and B12. Vitamin B1 is Thiamine, Vit B2 is Riboflavin, Vit B3 is Niacin, Vit B5 is pantothenic acid, Vit B6 is pyridoxine, biotin, folic acid, and Vit B12 is cyanocobalamin.

 

Answer 3. Chlorophyll

Explanation: We know plants prepare their own food and so are known as autotrophs. With the help of photosynthesis, they make food in which they produce glucose from carbon dioxide and sunlight. Oxygen is released by plants which are further used by humans and other animals. But Fungi lack chlorophyll and do not engage in photosynthesis.

 

Answer 4. Egg Laying

Explanation: Reptiles' skin is covered with hard, dry scales and most reptiles lay eggs. Those animals which are cold-blooded don't automatically maintain a constant body temperature. They have to lay out their eggs in the sun to keep their body warm.

 

Answer 5. Capillaries

Explanation: Blood is carried through the body by Blood Vessels. With the help of perfusion process capillaries supply blood to the tissues. The diameter of the capillary ranges from 5-10 micrometers. The diameter of the arteriole is approx. 30 micrometer.