Download Plant Science Unit 7 Review – Sexual Propagation 7.1 Define Terms

Plant Science
Unit 7 Review – Sexual Propagation
7.1 Define Terms
Match the following terms with their BEST definition listed below:
A. fertilization
B. germination
C. pollination
D. propagation
E. sexual propagation
F. scarification
G. stratification
_____ 1. The transfer of pollen from the male to female part of the flower.
_____2. Process in which the sperm cell joins the egg cell.
_____3. Reproducing plants from seed, which result from the union of male and female sex cells.
_____4. The process of a seed going through a time of cold temperature before it germinates.
_____5. Plant reproduction; either sexual or asexual.
_____6. The breaking down of a seed coat to encourage germination.
_____7. Growth of a new plant from a seed.
Match the following terms with their BEST definition listed below:
A. hybrid
B. ovary
C. ovule
D. pollen
E. seed
F. stigma
G. seed coat
H. endosperm
_____ 8. The part of the ovary where eggs are produced and seeds develop.
_____9. The fertilized, mature ovule of a plant.
_____10. The primary food source for an embryo of a monocot seed.
_____11. The part of the flower that contains one or more ovules and transforms into a fruit.
_____12. The part of the flower which produces male sex cells.
_____13. The protective shell surrounding the embryo and endosperm.
_____14. The sticky part of a flower pistil where pollen is collected.
_____15. Offspring from genetically different parents.
7.2 Discuss the meaning and importance of sexual propagation of agricultural and horticultural plants
16. Briefly explain what sexual propagation is in plants:
17. Identify at least two examples of where sexual propagation is used in the agricultural industry.
7.3 Identify the parts of seeds and explain their functions
18. Identify the three major parts of a seed and briefly explain the function of each:
A.
______________________:
B. ______________________:
C. ______________________:
7.4 Describe optimum conditions for seed germination
19. Identify which Stage of germination is described in each of the following:
__________A. Metabolic activity surges. Proteins are synthesized. Gibberellins stimulate the
production of enzymes. Starches are converted to sugars. Stored proteins are broken
down in to amino acids. The sugars and amino acids are directed toward cell division,
growth, and differentiation sites at the root and shoot meristems, or tips.
__________B. Seed absorption of water. As the cells hydrate, they swell and become turgid, or
rigid. The moisture triggers an increase in cellular respiration. Oxygen must be present
for cellular respiration.
__________C. Metabolic processes increase in this phase. The swelling of cells causes the seed coat
to rupture. The radical emerges downward, and the stem grows upward. The shoot
begins manufacturing food through photosynthesis. The roots absorb water and
nutrients.
20. What is the primary food source for an embryo?
21. Briefly explain how environmental factors can affect seed germination.