Exam III Study Guide

Exam III Study Guide - Angiosperms: Phylum Anthophyta...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Angiosperms: Phylum Anthophyta Unique Features 1) Flower: houses gametophyte generation – Advantages – attraction, better movement of pollen 2) Male and Female parts arranged on a receptacle 3) Double Fertilization (occurs in embryo sac) The Flower as a whole * arranged in whorls * corolla : multiple pedals calyx : multiple sepals stamen : where pollen is produced Male Reproductive Organ Pollen Formation (Microspores)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
* sporophyll – leaf that supports sporangia – makes spores * Female Reproductive Organ Megaspore Mother Cell (inside embryo sac) Embryo Sac Pollination – the transfer of the male gametophyte to the vicinity of the female gametophyte – aided by birds, bees, butterflies, bats Double Fertilization – 2 sperm enter the ovule 1 fuses with the egg cell 1 fuses with the 2 polar nuclei and develops into the endosperm (3n) – serves as food for the embryo The fruit is the result of double fertilization fruit = seed + pericarp
Background image of page 2
Seed 1) zygote, new sporophyte (2n) 2) endosperm (3n) - central cell and food for embryo 3) seed coat (integument) Pericarp (fruit) 1) exocarp – “skin” outer covering 2) mesocarp – fleshy middle portion 3) endocarp – surrounds seeds – NOT seed coat – holds seeds together Dispersal (keeps the new generation from competing with the mother plant) 1) wind (maple trees – “helicopters”) 2) water (coconuts) 3) hitchhiking (stick tights/cockleburs) 4) edible (nuts, berries, etc) 5) explosive Monocots vs. Dicots Phylum: Anthophyta Class: Liliopsida – Monocots – grasses, corn, lilies, bamboo Class: Magnoliopsida – Dicots – trees, roses, sunflowers, woody tissue Monocots Dicots Seed 1 cotyledon (embryonic leaf – absorbs food from endosperm 2 cotyledons – storage Flower Multiples of 3 Multiples of 4 or 5 Stem Vascular bundles are scattered Vascular bundles occur in a circular pattern Leaves Parallel (veins) Pinnate/Palmate (veins) Roots Adventicious Primary and Adventicious
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fungi Eating & Metabolism - heterotrophic: carbontrophic = “carbon in organic forms” - Extracellular Digestion: secretes enzymes to break things down
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 11

Exam III Study Guide - Angiosperms: Phylum Anthophyta...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online