30 - Plant reproduction

Question 1

Sporophyte

Answer 1

Diploid stage - spores

Question 1

Gametophyte

Answer 1

Haploid stage - gametes

Question 2

Male Gametophyte

Answer 2

Microsporcytes undergo meiosis (diploid)
Making a microspore (haploid)
Microspore undergoes mitosis (haploid)
Makes Generative cells and tube cells (haploid)
Generative + tube cell = Pollen grain

Question 3

Female gametophyte

Answer 3

Megasporcytes undergo meiosis (diploid)
Making 4 megaspores 1 survives (haploid)
Megaspore under mitosis four times making 8 nuclei (NO CYTO)
3 Top Anthoptical
2 Middle Polar
Middle Bottom Egg
2 Bottom Synergid

Question 4

Double fertilization
Angiosperm

Answer 4

Female Gametophyte signals male
Pollen grain fertilizes the Polar and Egg at the same time
Egg becomes zygote
Polar nuclei become the endosperm

Question 5

Zygote

Answer 5

Terminal - proembryo - cotyledon (seed of the leaf that gives nutrients) - shoot and root apex
Basial - suspensor that attaches the embryo to the plant.

Question 6

Radicle
Hypocotyl
Epicotyl

Answer 6

Roots first to emerge
Give rise stem
Apical meristem top stem

Question 7

Pollination Agent
(Same as fruit dispersal)

Answer 7

Abiotic - Wind Water
Biotic - Bats, Birds Insects

Question 8

Pollen

Answer 8

Self Pollination within the same plant
Cross-pollination between flowers and different plant

Question 9

GMO

Answer 9

The gene inserted into DNA
Cells with gene selected to grow