A sperm and an egg cell are each gametes. They fuse to become a zygote cell which develops into a fetus
Green plants are called producers because they make their own food out of water and carbon dioxide in the presence of sunlight. The organisms that are capable of preparing their own food from simple inorganic substances like carbon dioxide and water by using sunlight energy in the presence of chlorophyll are called producers. The green plants synthesise their own food through the process of photosynthesis and thus are called the producers.
