Which two examples show adaptations for plants growing in the desert? 1. spines to protect plants against animals seeking water 2. wide holes on leaves to release excess water vapor 3. pointed leaf tips to allow water to roll off easily 4. a waxy coating on leaves to reduce water loss

Adaptations for growing in the desert relate to reduction of water loss.

From the examples provided, answer 1 and answer 2 show adaptations for plants growing in the desert: spines can prevent the plants being eaten and forfeiting the water contained in their cells, and a waxy coating can help reduce water loss across the plant surface.

Answer 2 relates to stomata (pores) that exist on leaves of plants. These holes facilitate gas exchange (carbon dioxide in, and water vapour out. Desert plants often have modified stomata or keep them shut during the day to prevent water loss, so this answer is obviously wrong.

Answer 3 relates to water rolling off leaf tips. Deserts have very little rainfall so this answer is irrelevant and not an adaptation for desert climate.

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.