By conjugation
sure they can reproduce without seeds,example like the bird-nest fern it reproduce by spores.
Fertile offspring are offspring of parents which can continue to reproduce (for example Humans). However you can also get infertile offspring which cannot reproduce (an example of this is a mule, but it is not always the case.
One example is an "aphid".
Some do and some don't. Mammals, for example, must mate in order to reproduce. Other animals, such as certain kinds of sea-sponges, can reproduce asexually.
An example of adaptation is camouflage. What is camouflage? Answer: a camouflaged organism blends into its environment and is more likely to reproduce and survive.
None that I know of. Plants reproduce, sometimes, by making spores. The Fern plant and the true mosses do, for example.
insects get food from flowers and help the flowers reproduce
Amoeba reproduce asexually, along with every other type of bacteria.
Most of the vascular plants have flowers, thus implying that they reproduce by seeds-gymnosperms. By contrast, non-vascular plants don't usually have flowers and thus reproduce by other means; for example, fungi reproduce by spores.
One example is an "aphid".
sterile worker bees,mules,etc....i need some more examples other than these......
Insects get food from flowers and help the flowers reproduce - apex