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Biology Unit 1.5-P

SBI-3UI Biology test/ Plants Section

QuestionAnswer
The first habitat for plants on earth was Aquatic
Which algal group is most related to early land plants? Green Algae.
List 5 similarities between algae and terrestrial plants Both contain Chloroplasts A and B, Have Chlorplasts with stacks of thylakoids, store starch in plastids, cellulose in cell wall and go through alternations fo generations life cycle.
List 5 helpful adaptations aquatic plants have by being surrounded by water. They don't dry out, sperm swims to egg, water supports plant, plants stay in the upper surface near light and absorb nutrients from water.
Adaptation: Need minerals Roots absorb water and minerals
Adaptation: Gravity Lignin and cellulose in cell walls
Adaptation: Increase in height to get light Vascular transportation system
Adaptation: Drier Environment Waxy cuticle and stomata with guard cells
Adaptation: Reproduction Skin contains pollen
They make their own food and are therefore.... Autotrophs
Plants contain what type of chlorophyll? A and B
What surrounds the outside of all plant cells and what is it composed of? Cell walls and they are made of cellulose
How do plants store their reserve food? In the form of starch
The life cycle of plants is known as Alternation of Generations
The dominant stage of the plant is the diploid (2n) sporophyte stage
The eggs and sperm are produced during the haploid (1n) gametophyte stage
The sporophyte stage produces haploid spores by meiosis
Haploid spores undergo __________ to produce the ________ they undergo mitosis to produce the gametophyte stage
The gametophyte stage makes the egg and sperm
The gametophyte stage is the Flower
The sporophyte stage is the Seedling to tree stage
Plants are divided into __________ groups based on the presence or absence of an into 2 groups based on the presence or absence of an internal transport system
What is this internal transportation system? The vascular system- phloem for food, xylem for water
Nonvascular plants lack vascular tissue and are called Bryophytes
In what type of environment must nonvascular plants live? A constantly moist environment
Give an example of a bryophyte Moss
The cells of nonvascular plants must be in _________ contact with water because water moves by _______________ from cell to cell. direct, diffusion
How does the sperm get to the egg in nonvascular plants? Swimming through water droplets
Name the three divisons of nonvascular plants: Mosses, liverworts, hornworts
What are the 2 subdivisions of vascular plants? Seed-bearing vascular plants and non seed-bearing vascular plants
Name 4 divisions of seedless vascular plants Club moss, horsetails, whisk ferns, ferns
Name the 2 groups of seed-bearing vascular plants Gymnosperms(conifers) and angiosperms
Gymnosperms have.... naked seeds inside cones
Angiosperms have... Flowers to attract pollinators
List several plants in the conifers division pine, ceder, spruce, fir
Name two other divisions of gymnosperms Cycads and ginkgo
Name two other divisions of angiosperms monocots and dicots
Describe a monocot. Has a single seed cotyledon
Describe a dicot Has two seed cotyledons
Give three characteristics of monocots: Parallel venation in leaves, flower parts in multiples of three and vascular tissue scattered in cross section of stem
Give three characteristics of dicots: Net venation in leaves, flower parts in multiples of four or five and vascular tissue in rings in a cross section of the stem.
Created by: kierab
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