bài giảng về sinh sản

What are the Female parts of the flower?. Pistil: Stigma, Style, Ovary Pollen lands on Stigma, travels down style to ovary... What is a Perfect Flower?has Stamen & Pistil on same flower

Plant Reproduction

Chapter #4

What is the difference between Sexual Reproduction and Asexual

Reproduction?

Sexual requires an egg and sperm Asexual is vegetative

What are the Female parts of

the flower?

Pistil: Stigma, Style, Ovary

Pollen lands on Stigma, travels

down style to ovary

What is a Perfect Flower?

has Stamen & Pistil on same flower

only one part = imperfect

What is the difference between a Monoecious and Deoecious plant?

Monoecious: male & female flowers on same plant

Dioecious: male & female

flowers on different plants

What are the other parts of the

flower?

Calyx: all the sepals

Corolla: all the petals

What is a Complete Flower?

A flower that has all four major flower parts: Pistil, Stamen, Calyx, Corolla

What type of flower does the

grass plant have?

has calyx, corolla, pistil, stamen

any missing parts = imcomplete

perfect & incomplete

What is a Floret?

basic flower unit

What is a Spikelet?

a group of florets

What are the types of

Inflorescenses?

some grasses) branched

structure at tip of stem

What are the types of

Inflorescenses?

barley) spikelets attached

directly to stem.

What are the types of

Inflorescenses?

(mustard, rapeseed) single

flowers attached to stalk or stem.

What are the types of

Inflorescenses?

(sunflower) enlarged stem = receptacle

What is a Fruit?

An Apple or Tomato is considered a

fruit A Fruit is a mature ovary

Fruits can be fleshy (tomato) or dry

(wheat)

What is Pollination?

pollen grains from the anther

to the stigma

plants can be self-pollinated (male &

female flowers on same plant) or cross-pollinated (different plants)

What is Fertilization?

when sperm is united with an egg

pollen lands on stigma, germinates, and grows down style to the ovary where

sperm fertilizes the egg (pollen tube)

there are actually two fertilizations

Second sperm fertilizes second egg to

form the endosperm (food for the seed)