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Flashcards in Lecture 1 Deck (33):
1

Which organisms go through photosynthesis

plants, algae, and some bacteria

2

What are characteristics of living things

-ability to grow
-ability to reproduce
-ability to pass on their genes
-cellular organization
-respond to the environment
-evolve/adapt

3

Which organisms came first on primitive earth

heterotrophic organisms

4

What does heterotrophic mean

can't make their own food

5

Which organisms evolved second on primitive earth

autotrophic organisms

6

What does autotrophic mean

can make their own food

7

When did photosynthesis first come about

3.4 billion years ago

8

How did autotrophic organisms change primitive earth

were able to split water and release oxygen into the atmosphere

9

What are some consequences of oxygen in the atmosphere

-ozone layer
-cellular respiration
-evolution of eukaryotic cells

10

What was the seashore environment like

-more complicated than open sea
-more nutrients than open sea
-multicellular photosynthetic organisms

11

How did plants have to change to colonize land

They had to develop roots, stems, and leaves (epidermis, cuticle, and stomata)

12

What does the epidermis allow

keeps moisture in

13

What is the cuticle

waxy substance

14

What is the stomata

opening for gas exchange

15

What is the vascular system composed of

xylem and phloem

16

How does the xylem work

moves water from roots to leaves

17

How does the phloem work

moves nutrients from leaves to roots

18

What is cork

it allows perennials to have more structure and live longer

19

What is cork composed of

bark

20

What are the two types of meristems

apical meristems and lateral meristems

21

What is apical meristem

allows for primary growth, root and shoot

22

What is lateral meristem

secondary growth, vascular and cork cambium

23

What is meristem

embryonic tissue regions capable of adding cells indefinitely to the plant body

24

What are some characteristics of plants

-meristem
-reproduce on land
-adapt for life on land

25

How do plants reproduce on land

spores and seeds

26

How are seeds beneficial to the plant embryo

they protect them from predators and are a source of food storage

27

What are biomes

made up of naturally occurring communities of plants and animals determined by the climate

28

What are ecosystems

include living and non-living; are stable but not static even though the organisms are constantly being born and dying.. The same kind of organisms tend to be present over time if the ecosystem is not destroyed

29

What caused a huge change in the ecosystem

the industrial revolution

30

How can plants help human's impact on the earth

-global warming
-pollutants
-genetic engineering
-drugs for humans

31

How can sunflowers counteract radioactivity

they are able to absorb radioactive cesium and strontium from nuclear disasters at a quick pace

32

How do poplar and willow trees help with pollutants

they are able to remove contaminated fuel from fields and ground water

33

How does pickleweed help with pollution

pickleweed removes selenium, transforms it into a non-harmful substance, and releases it into the atmosphere to be carried away by the winds