Question

In which animal there is no blood for transport of nutrients?

• A. Fish
• B. Hydra
• C. Sponges
• D. Both B and C

Answer 1

The correct option is D Both B and C

All vertebrates possess a muscular chambered heart. Fishes have a 2-chambered heart with an atrium and a ventricle. In fishes, the blood transports nutrients when the heart pumps blood throughout the body. Animals like hydra and sponges do not possess any circulatory system. The water in which they live brings food and nutrients as it enters their body. The water carries waste materials and carbon dioxide as it moves out. Hence In animals like hydra and sponges, there is no blood for transport of nutrients.

So, the correct answer is 'Both B and C'.