Life Cycle of Living Things：練習問題

During the life cycle of a frog, which stage lives in the water and uses gills to breathe?

Animals can be classified based on how they reproduce. Which of the following pairs correctly matches the animal to its method of reproduction?

In the life cycle of various organisms, different strategies are used to ensure the survival of the next generation. Why do many plants produce a very large number of seeds, whereas most mammals give birth to only a few offspring at a time?

In the life cycle of a flowering plant, what is the correct order of the stages from the start of a new plant to the production of the next generation?

In the life cycle of a flowering plant, which stage must occur immediately after pollination and fertilization for the life cycle to continue to the next generation?

According to the life cycle of a flowering plant, what is the correct sequence of stages that occur after a seed begins to germinate?

In the life cycle of a flowering plant, describe the transition that occurs between the flowering stage and the seed dispersal stage.

A mother dog produces milk to feed her puppies after birth. Explain the significance of this behavior in terms of the survival of the next generation.

Human beings undergo different stages of growth and development throughout their lives. Consider the transition from infancy to childhood.

a) State two significant physical changes that occur during these stages. (2 points)
b) In which stage do humans typically begin to lose their primary (baby) teeth and grow permanent (adult) teeth? (1 point)

While many flowering plants reproduce through seeds, some can use their vegetative parts to produce offspring.

a) Identify the specific plant part used for reproduction in an onion and a sweet potato. (2 points)
b) Name a plant that can reproduce using its leaves. (1 point)
c) Why might a gardener choose to use vegetative parts instead of seeds to grow new plants? (1 point)