From which group of organisms did plants probably evolve?
multicellular freshwater algae
100
What are the male and female reproductive parts of a flower?
Stamen (male)
Carpel or Pistil (female)
100
Austrian monk known as the "Father of Genetics"
Gregor Mendel
100
Probability predicts what is _________ to occur, not what will actually occur.
likely
100
Why are ferns able to grow larger than mosses?
vascular system
200
Give 3 basic characteristics all plants share.
(1) Multicellular
(2) Eukaryotic
(3) Have cell wall
(4) Autotrophs
200
The reproductive structure of an angiosperm is a ______________ and the reproductive structure of a gymnosperm is a ________________.
flower and cone
200
Where is a gene located?
On a specific location on a chromosome
200
A ________ compares or shows the relationship between a part to a whole. In genetics, we use these to represent probability.
ratio
200
Why have seed plants become so abundant while many seedless plants have become extinct?
Seeds can survive better in drier, cooler environments
300
Why are plants so important to life on Earth?
Base of land food chains
Provide shade & shelter to animals
Produce oxygen
Sources of medication
300
In angiosperms, pollination occurs mostly by _____________ and in gymnosperms, it occurs mostly by ______________.
animals and wind
300
Each parent contributes _____ allele to their offspring for a given trait.
1
300
In plants, tall stems (T) are dominant to short stems (t). If you cross two heterozygous plants, what is the probability of their offspring having tall stems?
75%
300
Gregor Mendel's principles of heredity can be applied to:
(a) plants only
(b) animals only
(c) pea plants only
(d) all organisms
Why is it important for seeds to move away from their parent plant?
So the embryos within seeds can grow into plants without competition for resources, such as water, nutrients, and sunlight.
400
For each of the genotypes below determine what phenotype would be possible:
Purple flowers are dominant to white flowers.
PP __________________
Pp __________________
pp __________________
PP- purple
Pp- purple
pp- white
400
In humans, Widows peak is dominant over a straight hairline. Cross a heterozygote with a homozygous recessive What are the chances for inheriting a widow's peak?
50%
400
Determine whether the following alleles are heterozygous (H), homozygous dominant (HD) or homozygous recessive (HR):
TT ______
Hh ______
ff ______
Describe 3 ways that seeds are modified for easy dispersal.
-Lightweight (for water and air)
-Sticky seed coats
-Fruit
500
What adaptations do angiosperms have that make them more successful than other plants?
Flowers, fruits, seeds, vascular systems
500
For each phenotype below, list the possible genotype(s):
Straight hair(S) is dominant to curly(s).
___________ straight
___________ curly
straight- Ss, SS
curly- ss
500
The ability to curl the tongue in humans is dominant over the inability to curl the tongue. Cross two heterozygotes. What are the genotypic and phenotypic ratios?
Genotypic ratio- 1:2:1
Phenotypic ratio- 3:1
500
Purebred organisms can also be referred to as ________________.
Hybrid organisms can also be called ________________.