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Bio exam 2-2 > Seed plalnts > Flashcards

Seed plalnts Flashcards

1
Q

The female gametophyte (n) is retained and is dependent on the …?

A

sporophyte (2n)

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2
Q

Gymnosperms (naked seeds) dominated the world’s vegetation…?

A

245 to 60 million years ago

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3
Q

About how many living species of gymnosperms are there and what kind of species?

A

900 living species

pines, redwoods, cypress, spruce firs

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4
Q

Angiosperms or flowering plants have

A

seeds within vessels, the seed is surrounded by other layers of plant tissue

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5
Q

How does the pine tree reproduce? Coniferophyta (Pine tree)

A

Ovulate cone, scales, megaspore mother cell (2n) is produced, megaspores (n) via meiosis, which is retained. then through many mitotic divisions megagametophyt (n) with 2 or 3 archegonia, each produces an egg.

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6
Q

Coniferophyta: when on of the sperm fertilizes the egg forming a _______?

A

zygote

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7
Q

The seed coat has an extension (wing) that …?

A

facilitates dispersal by…

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8
Q

The most common plants in the boise foothills are______?

A

angiosperms

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9
Q

All flowering plants belong to what phylum?

and it is divided into ________ clades.

A

Antophyta

Several

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10
Q

Most angiosperms belong to either two classes __________ and __________?

A

Monocotoyledones and Eudicots

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11
Q

What are examples of Monocotolyledones (monocots, -65,000 species)?

A

lilies, orchids, palms, grasses

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12
Q

What are the common Eudicots (dicots, -175,000)?

A

roses, peas, sunflowers, oaks, maples

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13
Q

What are the four characteristics of Monocots?

A
  1. seed with one cotyledon (“seed leaf”).
  2. Leaves with parallel veins.
  3. Lateral meristems rarely occur.
  4. Flower parts mostly in threes or multiples of threes
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14
Q

What are the four characteristics of Dicots?

A
  1. Seed with two cotyledons (“seed leaves”).
  2. Leaves with a network of veins.
  3. Lateral meristem (cambia) present.
  4. Flower parts mostly in fours or fives or multiples of four or five.
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15
Q

Most threes are eiudicot. True or False

A

Eiudicot

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16
Q

A flower can have 4 whorls, what are they?

A

Calix, corolla, androecium, gynoecium

17
Q

THe Calix consists of _________, which protect the flower buds.

A

sepals

18
Q

The corolla consists of ________ petals, which attract pollinators and protect flower buds.

A

petals

19
Q

The androecium consist of ________. The anthers produce ________(male gametophyte)

A

stamens

pollen

20
Q

The Gynoecium consists of _____ ___ ______ ________, which produce ovules where the ________ gametophyte develops.

A

one or more carpels

female

21
Q

Flowers that lack one of the whorls means that …?

A

there is a lot of variation in flower morphology and structure.

22
Q

(Sexual reproduction for angiosperms)
The anther has 4 sacs (__________) with _________ mother cells.

How does it go to a microspore?

From a microspores how does it go to a pollen grain? which is called ____________.

A

Microsporangia

microspore

by meiosis

mitosis… and its called microgametophyte

23
Q

(Sexual reproduction angiosperms)
the pollen initially has two cells: the tube cell that (1)________ the (2)_________ cell, which divides to form (3)_____ (4)_______ cells.

A

(1) encloses
(2) generative
(3) two
(4) sperm

24
Q

(Sexual reproduction angiosperms)
the ovule has a __________ with a…?

Of the megaspores (n) how many survive?

The embryo sac is called________ and has …?

A

megasporangium

a megaspore mother cell

only one

megagametophyte with 7 haploid cells

25
Q

(Sexual reproduction angiosperms)
Pollination: the transfer of the pollen from the …?

The pollen germinates and produces a tube that carries the …?

A

anthers to the stigma

sperm to the embryo sac

26
Q

(sexual reproduction angiosperms)
In double fertilization one sperm fuses with the (1)_____ to form a (2)_______. The other sperm fuses with the (3)______ (4)______ to form a (5)______ (6)______(3n).

A

(1) egg
(2) zygote
(3) polar
(4) nuclei
(5) triploid
(6) cell

27
Q

Seed plants have further reduction of the ….?

A

gametophyte (n)

Bio exam 2-2 (1 decks)

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