The correct answer is B. During drought, stomata can be closed to prevent excessive water loss through the process of transpiration.
Stomata are <em>tiny pores or openings</em> which are in plant tissue and they allow exchange of gas. They are found in the leaves of a plant.
Guard cells helps in the opening and closing of stomata. The pores allows in, carbon dioxide into the plant which is well known as needed during the process of photosynthesis.
They help in reducing water loss and that is why the leaves close when it is dry or hot. The closing and opening of stomata helps in the process of transpiration.
The main source<span> of </span>energy<span> for </span>cell metabolism is in the form ATP or adenosine triphosphate. It a small molecule used in cells as a coenzyme. It <span>transports chemical energy within cells for metabolism. Hope this helps. Have a nice day.</span>
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water
If root hair cells contained chloroplasts then that would just not make sense because, in order for the root hair cells to grow they would need sunlight.