Reproduction In Flowering Plants

Question 1

What is reproduction?

Answer 1

Ability for organisms to produce an new generation of themselves

Question 2

What is asexual reproduction?
Advantages (4)
Disadvantages (2)

Answer 2

Production of a new generation by one parent
ADVANTAGES 
- all individuals can produce offspring
- simple & fast process
- useful in stable environments
- favorable mutations can spread rapidly
DISADVANTAGES 
- no variation in offspring
- over-crowding may occur

Question 3

What is sexual reproduction?
Advantages (4)
Disadvantages (4)

Answer 3

Production of a new generation by bringing together the genetic material of two parents
ADVANTAGES
- basis of evolution
- survive unstable environments
- prevent spread of disease - genetically resistant
- reduced chance of inheriting disease/mutations

Question 4

What is pollination?

Answer 4

Transfer of pollen from anther to stigma = fertilization and reproduction

• cross pollination = pollen transferred from anther to a stigma of another plant of the same species = genetic variation
• self pollination = pollen transferred from anther to stigma of same flower or to another flower of the same plant

Question 5

What is fertilization?

Answer 5

Joining of two haploid cells to form a diploid zygote

Question 6

What is genetic engineering?

Answer 6

Process of taking a gene out of on organism and putting it into the DNA of another organism

Question 7

What traits are being incorporated into food crop plants? (6)

Answer 7

• resistance to certain diseases & herbicides
• increase pest tolerance
• nutrient-content enrichment
• flood tolerance
• longer storage life
• improved flavor

Question 8

What are hybrid crops and what improvements come from them? (4)

Answer 8

Crops produced by cross-pollinating 2 inbred plants of dissimilar genotypes

IMPROVEMENTS

• more vigorous
• improved disease resistance
• increased yield
• quality improvement

Question 9

What is a polyploid plant and how are they developed?

Advantages (4)

Answer 9

Contain more than two homologous sets of chromosomes
DEVELOP
- disturbance in mitosis/meiosis during crossing of two hybrids
- seeds treated with the chemical colchicine
ADVANTAGES
- seedless fruits
- bigger, more robust plant
- larger flower
- bigger fruit