BIOA02H3 Lecture Notes - Lecture 8: Sanguinaria, Pollen Tube, Inbreeding Depression

• School: UTSC
• Department: Biological Sciences
• Course: BIOA02H3
• Professor: Ivana Stehlik

Document Summary

Sepal: (func) protect inner flower organ b4 bud opens; green; (plural = fused) calyx (tube-like) Petal: colourful -> attract pollinator; (plural = fused) corolla (tube-liked) Stamen filament + anther; pdc pollen; anther - 4 pollen sacs. Carpel: stigma (sticky landing platform for pollen) + style (connect stigma w/ ovary; hollow tube -> pollen tube can grow) + ovary [carpel 1-many ovaries -> ovary 1-many ovules -> ovule 1 egg cell only] 1 ovary 1 ovule: e. g. cherry, peach, apricot, almond, olive (1 seed in 1 fruit) Many ovaries 1 ovule: e. g. blackberry, raspberry (1 seed in each 1 lub lub -> many lub lub = many ovaries // 1 seed = 1 ovule) 1 ovary many ovules: e. g. cucumber, tomato, melon, pepper, blueberry (many seeds in 1 fruit) 0-3-4-5-many sepals: 0-3-4-5-many petals, 0-many stamen, 0-many carpel. 75%: hermaphroditic ( male & female @ same flower) => 3 reproduction ways (within same flower // within same plant cross-flower // cross-plant)