Download Biology Notes: Seedless Nonvascular Plants (Moss Life Cycle)

Name: _________________________________________________ Date: _______________ Period: ________ Biology Notes: Seedless Nonvascular Plants (Moss Life Cycle) Directions: Fill in the blanks as we cover the topic in the PowerPoint. Corresponds to textbook pages 617 – 619 & 664 – 665 Alternation of Generations • Defined: Plants _______________ between a ______________ organism and a ______________ organism. __________ divides by ___________ to Zygote created from create adult ____________ __________ & __________ Haploid ___________ created by ___________ Cycle repeats (__________ of ______________ stage) ___________ & egg create diploid Haploid __________
__________ ___________ into air (sporophyte stage ___________) Spore __________ into Female _____________ Male _____________ __________ or __________ creates ___________ creates ___________ gametophyte
Group 1: Seedless, Nonvascular Plants • Most _______________ of plants •
Live in _______________ environments –
•
Swimming _______________ Examples: –
_______________ –
_______________ Mosses • Because _____________ = Grow ______________ to ______________ –
•
Water _______________ by simple _______________ Lack _______________ leaves –
Only _____ cell _______________ •
Rhizoids ____________ into _____________ •
Early _______________ of _______________ ecosystems (_______________) –
________________
Moss Life Cycle • Gametophyte stage –
_______________ stage; _______________ –
Looks like _______________ of green shag _______________ •
Antheridium: produces male _______________ •
Archegonium: produces female _______________ Sperm _______________ through _______________ to –
_______________ __________ •
•
Sporophyte stage –
_______________ grows _______________ of the _______________ –
Haploid _______________ created inside _______________ by _______________ –
Spores _______________ and _______________ into new _______________ Steps: 1) Spores ______________. Moss ______________ grow near the ______________ (haploid stage) 2) Through _____________, sperm from the _____________ (male gametophyte) will _____________ to the ______________ (female gametophyte) to create a ______________ ______________ 3) Diploid ______________ will ______________ from ______________ 4) Sporophyte will ______________ haploid ______________ by ______________. Spores will ______________ and ______________ into new ______________ 5) Cycle ______________ Moss Life Cycle Review Directions: Place the steps of the moss life cycle in order. ___1___ Spores land. _______ Diploid sporophyte will grow from zygote. _______ Through water, sperm swim from antheridium (male gametophyte) to archegonium (female gametophyte). _______ Moss gametophytes grow near the ground. _______ Sporophyte will create and release spores. _______ Fertilization occurs. Review 1) Why do moss grow so low to the ground? 2) Which stage is the main stage of moss: sporophyte or gametophyte? 3) What do moss need to reproduce?. 4) Label the parts of the diagram 5) Using the picture answer the following: • Where are spores created? • Name the haploid stage. • Which grows from the zygote? 6) How are the antheridia and archegonia different? Similar? 7) Meiosis begins which stage of plants? 8) Fertilization begins which stage of plants? 9) How are haploid spores created?