Which of the following characteristics is described here:
a cactus plant uses photosynthesis to make sugar
composed of cells
homeostasis
reproduction
obtain and use energy

obtain and use energy (Ans. D)

Explanation:

Photosynthesis: It is the process where plants and some other organisms use the energy from sunlight to make sugar which converts cellular respiration into ATP.

Cactus plants have pads, succulent stems with spines and scales instead of leaves. In cacti plants photosynthesis occurs in stems through a special mechanism called Crassulacean acid metabolism (CAM) as a part of photosynthesis.

The correct answer is letter C, Bt corn reduces the populations of bees needed to pollinate the plants.

Plants that have been genetically modified are not naturally occurring therefore, organisms that are introduced to such kinds of plant breeds are not familiar with that kind of species. The probable side effect that critics would use is the answer to the question because plant pollination is such a critical cycle that occurs within the Earth. If plants are not able to pollinate, its biodiversity would be compromised.