Question

State true or false if you will do all correct I will mark you as brainlest..

1. Carbon dioxide concentration has a depressing effect on respiration. 2. Respiration results in gain, while photosynthesis results in loss of weight.
3. Photosynthesis occurs only in green cells while respiration takes place in all living cells.
4. Respiration in young active cells is less rapid than in old cells
5. Respiration is more in bright light than in dim light
6. Respiration is a constructive process.​

Answer 1

Photosynthetic organisms, including plants, algae, and some bacteria, play a key ecological role. They introduce chemical energy and fixed carbon into ecosystems by using light to synthesize sugars. Since these organisms produce their own food—that is, fix their own carbon—using light energy, they are called photoautotrophs (literally, self-feeders that use light).
Humans, and other organisms that can’t convert carbon dioxide to organic compounds themselves, are called heterotrophs, meaning different-feeders. Heterotrophs must get fixed carbon by eating other organisms or their by-products. Animals, fungi, and many prokaryotes and protists are heterotrophs.