Unit 14 Review Flashcards
(28 cards)
How dose the stomata open
They open when there is sunlight and the plant has water
How dose cohesion- tension transport work
The transpiration of water from the leaves creates a vacuum that pulls more water up through the xylem
What is the name of the system that phloem uses to move stuff
Pressure- flow
Why won’t cohesion-tension transport work with phloem
Because it can only move in one direction
Is a mature leaf a source or a sink
A source
Are roots sources or sinks
Sink
What are the 3 chemicals that nitrogen is broken down into for plants to use
Ammonium
Nitrite
Nitrate
What breaks down the nitrogen
Bacteria in the soil
If a plant arises from vegetative reproduction is it the same as the parent plant
Yes because it is a form of asexual reproduction
If a plant arises from a plant that fertilized itself is it identical to the parent plant
No
What are the forms of reproduction that use meiosis
Microscopic mother cell
Megaspore mother cells becoming megaspores
What are the forms of reproduction that use mitosis
Microspores becoming pollen grains
Megaspore becoming an embryo sac
What are the male and female parts of a flower
Stamen is the male part and pistil is the female part
What is a pollen grain made up of
A tube nucleus (1) sperm nuclei (2) (male)
What is an embryo sac made up of
Megaspores, (7) 6 have a haploid nucleus one of which is the egg cell, there is a larger central cell that has 2 nuclei
(female)
What changes in the central vacuole
Its thickness changes to open and close the stoma
Is a fruit that is forming a source or a sink
A sink
Dose sugar flow towards a source or a sink
A sink
What is the function of each component of a pollen grain
The tube nucleus will dig through the style to get to the ovary, and the sperm nuclei will fertilize the cells
Why do flowering plants do double fertilization when they sexually reproduce
Because they do 2 fertilizations, one sperm nucleus fertilizes the egg and the other one the larger 2 nucleus cell
After the double fertilization what dose the diploid cell development and triploid cell develop into
The embryo and the endosperm
What are the 3 parts of an embryo in a seed
The radical the roots, (will develop first) the hypocotyl stem, and the plumule leaves
What is supplying the roots with food as they grow
The endosperm
What are plant hormones sometimes called
Phytohormones
