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Transcript
Topic: Reproduction Aim: Describe the structure of a flower and how it uses sexual reproduction. Do Now: 1. Take out the Seeds ISN. 2. Sit next to your 6 o’clock partner to work on the do now. HW: Ditto – Embryonic Development 1. Identify the type of development observed in the diagram. External development 2. Identify the types of organisms that use this type of development. Aquatic and terrestrial 3. Identify the source of nutrition for the embryo. Yolk 4. Identify what cushions and protects the embryo. Amniotic fluid 1. Identify the structure that produces estrogen and progesterone. B - ovary 2. Where does a zygote develop? D - uterus A - oviduct 4. Where does the placenta form? D - uterus 3. Where is the egg fertilized? 5. Identify the process when an egg is released from an ovary. Ovulation 6. Identify the process that occurs in the ovaries. Meiosis Identify the process occurring in the diagram below. Support your answer. http://www.youtube.com/watch?v=VPHFzHRyZ1k Topic: Reproduction Aim: Describe the structure of a flower and how it uses sexual reproduction. Do Now: Take out your HW and the Seeds ISN HW: CL Sexual Reproduction due Monday< March 9th Reproduction Exam on Tuesday, March 10th 1. How do nonflowering plants reproduce? • Grow from spores instead of seeds • Brightly colored to attract 2. insects to pick up pollen Identify from the flower and carry the it to the next flower function of (POLLINATION) petals. How are flowers pollinated? • Some grasses have small, 3. dull, off-white flowers. Identify an example • Use wind to blow pollen of how grains to other plants pollination occurs in plants without petals. • Sepals 4. Identify the structures that protect the flower when it is still a bud. 5. • Leaves that form a ring Describe around petals the • Usually green or brown appearance of sepals. 6. • Stamen Identify • Anther and filament the male parts of a flower and the two parts its consists of. 7. Identify the male reproductive structure that produces and contains pollen. • Anther • Pollen: male gamete How many sperm nuclei are present in a pollen grain? 8. Identify the male reproductive structure that holds up the anther. • Filament 9. Identify • Pistil the female • Stigma, style and ovary part of the flower and the three parts it consists of. 10. • Stigma Identify the female reproductive structure that pollen grains stick to. 11. • Style Identify the female reproductive structure that holds up the stigma 12. • Ovary Identify the female reproductive structure that contains the ovules. • Eggs 13. Identify what is found in the ovules. • When pollen sticks to the 14. Describe stigma. what pollination is. 15. Describe what happens once pollination occurs. • Pollen tubes form down the style from pollen grains to allow pollen to travel down the style and into ovary • Ovules become seeds 16. Describe • Ovary turns into fruit the 2 things that occur once fertilization occurs. • Nectaries 17. Identify the flower structure that produces nectar. 18. How do • Insects have to reach deep down into flower to find insects drinking the nectar. nectar help • Pick up pollen and carry it in to next flower. pollination? • Receptacle 19. Identify the structure where parts of the flower are attached. Cross pollination or self pollination? Topic: Reproduction Aim: Describe the structure of a flower and how it uses sexual reproduction. Do Now: Take out the Seeds ISN and the Embryonic Development HW HW: Bring your textbooks to class tomorrow!!! CL Sexual Reproduction due Monday< March 9th Reproduction Exam on Tuesday, March 10th 1 Fertilization 3 2 Zygote Cleavage A B C 4 Blastula 5 Gastrula stigmaH style G anther petal filament ovary F ovule E 1. 2. 3. 4. 5. 6. 7. sepal Identify the male reproductive structure and its parts. Identify the female reproductive structure and its parts. Where are gametes produced? By what process? What happens during pollination? Identify what assists in pollination. How do the sperm nuclei get to the ovules? What happens to the ovules and ovary once the eggs are fertilized? 1. Identify what is found inside the seed. • Plant embryo • Food supply – cotyledon • Surrounds and protects the 2. Describe embryo the function • Keeps the contents of the of the seed seed from drying out coat. • Provides nutrients for the 3. Describe embryo as it grows. the function of the cotyledon. 4. Identify what dispersal in line 3 refers to. • Spreading 5. Identify what enables a seed to last for long periods of time. • Embryo stops growing while it is still small. • When it starts to grow again, it uses nutrients in the cotyledon. 6. Describe seed germination. • Early growth stage of plant embryo 7. Identify the 2 conditions needed for a seed to germinate. • Water • Suitable temperature Seed Structure Embryo http://www.youtube.com/watch?v=bwCpQflmQG4&feature=related http://www.youtube.com/watch?v=KMQtLWpAdXI&feature=related Let’s summarize… 1. Describe the male reproductive organ of the flower. 2. Describe the female reproductive organ of the flower. 3. Explain what occurs during pollination. 4. Explain what occurs after pollination. 5. Explain what happens to the flower once the eggs are fertilized. 6. Describe the structure of a seed. The part of the pistil which contains the pollen tube is the (1)stigma (2)style (3)ovary (4)ovule The transfer of pollen between the anther and the stigma in any flowering plant or plants is called (1)fertilization (2)pollination (3)photosynthesis (4)transpiration The sex cells in a flowering plant are located in the (1) sepals and petals (2) stigma and nectar (3) fruit and seed (4) stamens and pistil In order to reach an ovule, a ___________ grows through the style and into the ovary. (1)sepal (2) fruit (3) pollen tube (4) seed The egg cell of a flowering plant develops in the (1) pollen grain (2) ovule (3) stigma (4) fruit The sperm of flowering plants is contained in the (1) ovule (2) pollen grains (3) style (4) stigma The entire female reproductive organ in flowering plants is called the (1) pistil (2) stamen (3) stigma (4) sepals The sticky top of the pistil is called the (1) style (2)anther (3)stigma (4)filament Which statement below is true? (1) Nymphs after emerging from eggs look like adult insects. (2) Larva after emerging from eggs look like adult insects. (3) Nymphs will develop inside pupa before emerging as adults. At what stage of development is the insect encased in a protective cocoon? (1)Larva (2)Nymph (3)Pupa (4)Egg At what stage of development do insects appear work-like? (1)Larva (2)Nymph (3)Pupa (4)Egg