What does gelatinous secretion mean

What is a group of organisms that are closely related and share similar characteristics

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these