Life Cycles Assessment Prep
| # | Answer |
|---|---|
| 1 | A life cycle is the series of stages an organism goes through from beginning of life to reproduction and death. |
| 2 | Egg, larva, pupa, and adult. |
| 3 | Germination, when the seed begins to sprout. |
| 4 | To produce offspring and continue the species. |
| 5 | The tadpole stage. |
| 6 | Metamorphosis is a major change in body form during development, such as from larva to adult or tadpole to frog. |
| 7 | Incomplete metamorphosis has egg, nymph, and adult stages, and the immature form resembles the adult; complete metamorphosis includes egg, larva, pupa, and adult stages, with very different immature forms. |
| 8 | Pollination is the transfer of pollen from the male part of a flower to the female part of a flower of the same species. |
| 9 | Fertilization combines male and female genetic material to form a zygote, beginning development of a new organism. |
| 10 | A zygote is the single cell formed when a sperm cell and egg cell fuse during fertilization. |
| 11 | Sexual reproduction combines genetic material from two parents, creating genetic variation among offspring. |
| 12 | Examples include temperature, water availability, light, food supply, and habitat conditions. |
| 13 | The pupa is a transformative stage in which larval tissues are reorganized into adult structures. |
| 14 | Seed dispersal helps offspring spread away from the parent plant, reducing competition and increasing the chance of survival. |
| 15 | Growth refers to an increase in size or number of cells, while development refers to changes in form and function as an organism matures. |
| 16 | Direct development produces young that look like smaller versions of the adult, while indirect development includes a larval stage that looks very different from the adult. |
| 17 | Different stages may be adapted for different functions, such as feeding, dispersal, or reproduction, which can improve survival. |
| 18 | Alternation of generations is a life cycle pattern in which plants alternate between multicellular haploid and diploid stages. |
| 19 | Water helps sperm and eggs meet and can protect gametes and developing embryos in some species. |
| 20 | A long juvenile period usually slows population growth because individuals take longer to become reproductive adults. |
| 21 | An adaptation such as camouflage in larvae, protective seeds, or parental care can reduce mortality and improve the chance of reaching the next stage. |
| 22 | Flowering plants have alternating multicellular generations, specialized reproductive structures, and processes such as pollination, fertilization, seed formation, and germination. |
| 23 | Life cycle knowledge can show that fragmented habitat may interrupt pollination, mate finding, larval development, dispersal, or access to resources needed at specific stages. |
| 24 | It helps identify vulnerable stages, critical habitats, and timing for intervention, allowing protection efforts to target the stages most important for survival and reproduction. |
| 25 | First, fewer larvae will survive to the pupal stage because they lack food. Second, fewer adults will emerge, which reduces reproduction and further decreases population size. |