Exam 2 Flashcards

Question

Choanoflagellates

Answer 1

Have a “collar” and a single flagellum Single-celled and colonial Closely related to animals

Answer 2

Multicellular reproductive organs in plants | Produce gametes

Answer 3

One generation is the multicellular, haploid, gametophyte | The other generation is the multicellular, diploid, sporophyte

Answer 4

Produce haploid spores through the process of meiosis

Answer 5

Produce gametes through mitosis, which join to form a diploid zygote

Answer 6

Male gametangium, produces sperm

Answer 7

Female gametangium, produces eggs

Answer 8

Produces spores

Answer 9

Have two conducting tissues, xylem and phloem

Answer 10

Carries water and minerals from the roots. Formed from dead cells

Answer 11

Carries sugar, amino acids, and other organic nutrients. Formed from living tissue

Answer 12

Vascular plants: sporophytes | Bryophytes: gametophytes

Answer 13

Have 2 phyla Phylum Lycophyta and Phylum Pteridophyta

Answer 14

Club mosses Many tropical lycophytes are epiphytes Epiphytes grow on trees but are not parasitic

Answer 15

The ferns The most common seedless vascular plants ~12,000 species Mostly herbaceous but there are tree ferns in the tropics Most have leaves called fronds The sporangia of most ferns are arranged into clusters called sori

Answer 16

The spore is retained in the sporophyte and develops into the gametophyte. So the gametophyte develops inside the sporophyte.

Answer 17

Produce megaspores Megaspores develop into the female gametophyte that contains the egg It is a solid structure called the nucellus

Answer 18

Produce microspores | Microspores develop into male gametophytes (pollen grains) that contain sperm

Answer 19

Have phyla Cycadophyta, Ginkgophyta, Coniferophyta

Answer 20

The cycads Have their naked seeds on special leaves (cones) Woody plants

Answer 21

``` The ginkgos Only one living species Ginkgo biloba Many species during the time of the Dinosaurs Has fleshy fruit-like seeds Separate male and female trees ```

Answer 22

The conifers Cone bearing plants The largest Phylum of gymnosperms Many species have needle-shaped leaves with thick cuticles and stomata in pits that make them drought resistant They are woody plants with lignified cells Include the Gnetales

Answer 23

Flowering plants, >250,000 species

Answer 24

Monocots and Eudicots

Answer 25

Include grasses, sedges, lilies, irises, palms, orchids, and others. Flower parts in threes or multiples of three

Answer 26

Contains most of the old dicots, this includes roses, beans, oaks, maples, asters, buttercups, and many more. Flower parts in fours or fives or multiples of four or five

Answer 27

Xylem cells in angiosperms and gymnosperms that provide support and transport water

Answer 28

Xylem cells in most angiosperms

Answer 29

Are located at the bottom of the flower | Usually green, sometimes brightly colored

Answer 30

Located above the sepals, often brightly colored

Answer 31

The male reproductive organ, it has two parts Filament – a stalk Anther – a terminal sac that produces pollen

Answer 32

``` Made up of one or more fused carpels the female reproductive organ Consists of 3 parts: Stigma - Terminal portion - Sticky to receive pollen Style - Tube shaped structure connecting the stigma to the ovary Ovary - Contains the ovules that develop into seeds ```

Answer 33

– fruit derived from one ovary - The most common fruit - May be fleshy or dry - Many variations

Answer 34

Develop from a single flower with many carpels | Blackberry, strawberry

Answer 35

Develop from an inflorescence (multiple flowers) | Pineapple, fig

Answer 36

The pollen grain contains 2 sperm nuclei, one fertilizes the egg forming the diploid zygote, the other fuses with 2 nuclei in the embryo sac forming a triploid nucleus. The triploid nucleus forms into the endosperm, the food supply of the seed