北大精英教案整理（Peking University Elite lesson plan）.doc

北大精英教案整理（Peking University Elite lesson plan） Orsay Botany part 1, higher plants have metagenesis spore meiosis to produce spores, spore formation of gametophyte, gametophytes produce gametes (sperm and eggs) to form a zygote through fertilization (fertilized egg) developed into sporophyte. 2. The edible kelp is a sporophyte, the gametophyte of the bryophytes live independently (the sporophyte is parasitic on the gametophyte), and the ferns and seed plants are all sporophyte developed. 3. The endosperm of gymnosperms is the female gametophyte (n), and the angiosperm endosperm is polyploid (mostly 3n) 4. Vessels appear only in angiosperms, and in ferns and gymnosperms, tracheids are tracheids. 5, the screen only in angiosperms there, in ferns and gymnosperms is sieve-cell. 6, in the seed plant (duct, tracheid) and (fiber, stone cells) is mature after the death, but has functional tissue. In 7, the seed plants (screen, sieve) is mature after the nucleus disappeared, but still living cells. 8. The medicinal Cordyceps sinensis is formed when the spores invade the insect larvae and form sclerotia. 9, in the life cycle of ferns, the occurrence of spores is (Juan Bai) plants. The emergence of this phenomenon is important for the formation of (seeds) in the phylogeny. The life history of 10, Spirogyra only alternation of nuclear phase, no alternation of generations. 11. The primary xylem of the root is an initial development, and the primary phloem is also the outer phloem of the stem, but the primary xylem of the stem is the inner opening 12, flower program 13, Gnetaceae plants archegoniatae no archegonia, stem secondary xylem catheter, is the evolution of gymnosperms traits 14. Typical features of some subjects (data previously sent) 15. Abnormal types of vegetative organs and representative plants Two. Plant Physiology 1, dark reactions also require light, because some enzymes can not be produced without light, such as: two, phosphate carboxylase sugar sugar in the absen