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Mrs. Janssen's Final

Plant Reproduction Biology Chapter 23

What is reproduction without the joining of an egg and sperm called? asexual reproduction
What are the horizontal stems of strawberry plants called? stolons
type of reproduction in which new plants are grown from existing plants is called what? vegetative reproduction
What is the technique called when plants are grown from a few cells of plant tissue? tissue culture
What is the first cell of the sporophyte stage called? zygote
In mosses, which structure produces the egg? archegonium
Which structure produces the sperm in mosses? antheridia
The movement of sperm in response to chemicals produced by archegonia is called what? chemotaxis
A small threadlike structure that can develop into a gametophyte plant is called what? protonema
What are the spore producing structures on ferns called? sori
What is the tiny heart shaped gametophyte of a fern called? prothallus
A spore produced by the female, developing into a female gametophyte is called what? megaspore
A spore produced by the male, developing into a male gametophyte is called what? microspore
When 4 megaspores are produced, how many survive and develop into female gametophytes? 1
How many cells does a pollen grain consist of? 4
How long does it take the pollen grain to develop and grow into the ovule? 1 year
How many sperm does each pollen grain produce? 2
What does the outer layer of the ovule form as the embryo develops? seed coat
Flowers that have all 4 organs. complete
Flowers that are missing one organ. incomplete
Flowers that have both stamens and pistils. perfect
Flowers that have just a stamen or pistil. imperfect
What kind of flower has petals that are in multiples of 3? monocot
What kind of flower has petals that are in multiples of 4 or 5? dicot
What kind of photoperiodism is it when the # of dark hrs. > critical period? short day
What kind of photoperiodism is it when the # of dark hrs. < critical period long day
What kind of photoperiodism is it when the # of dark hrs. in between (just right)? intermediate day
What kind of photoperiodism is it when the # of dark hrs. does not matter day neutral
The tissue that nourishes the embryo. endosperm
The outside layers of the ovule eventually form what structure? seed coat
Fruits form from what structure? ovary
When an embryo starts to grow, it is called this. germination
The first part of the embryo to appear outside the seed. radicle
The first part of the embryo to appear above the soil. hypocotyls
What type of fruits are apples, peaches, grapes, & pumpkins? simple fleshy
What type of fruits are strawberries, blackberries, raspberries? aggregate
What type of fruits are figs, pineapple, mulberries? multiple
What type of fruits are nuts, pods & grains? dry
Underground stem that supports fronds. rhizome
First cell of sporophyte generation. zygote
Structures that produce sperm. antheridia
Tiny, heart shaped gametophyte structure. prothallus
Structures that produce spores. sori
Plant that produces both male & female spores. heterosporous
Cells in the sporangia of pollen (male) form these. microspores
Cells in the ovule form these. megaspores
Opening in an ovule. micropyle
Two nuclei in the center of a cell. polar nuclei
Process in which one sperm fertilizes the egg & second sperm joins with polar nuclei. double fertilization
Food storing tissue that supports and helps nourish the embryo inside the seed. endosperm
Period of inactivity that can occur in seeds. dormancy
When an embryo starts to grow into a new plant. germination
Type of cell formed when one sperm joins with the 2 polar nuclei. triploid
This fruit is dry when mature. dry
This fruit contains one or more seeds. simple fleshy
This fruit forms from many flowers that fuse as the fruits ripen. multiple
This fruit forms from flowers with multiple female organs that fuse as fruits ripen. aggregate
Male reproductive organ in plants. stamen
Female reproductive organ in plants. pistil
Tip of male reproductive organ in plants. anther
Stalk of male reproductive organ in plants. filament
Tip of female reproductive organ in plants. stigma
Middle part of female reproductive organ in plants. style
Round, bottom part of female reproductive organ. ovary
Created by: jjanssen33
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