Seed Plants

Question 1

what are the characteristics of the Cycadophyta

Answer 1

cycads are unique and ancient gymnosperms, Palm-Like Appearance, Cone-Bearing

Question 2

what are the characteristics of the Gnetophyta phyla

Answer 2

Vascular,Heterosporous, Gymnosperms,Cone-Like Structures, flat leaves

Question 3

What are the characteristics of the Coniferophyta

Answer 3

Needle-Like or Scale-Like Leaves,Vascular,Heterosporous, Gymnosperms, Wood Formation

Question 4

staminate or ovulate cones (identify them)

Answer 4

Staminate cones, also known as male cones, are the smaller and typically more numerous. located in the lower branches, release large quantities of pollen into the air.
Ovulate cones, also known as female cones, are larger and less numerous than staminate cones. found on the upper branches, protect ovules

Question 5

What is the ploidy level of the structures/tissue layers of a gymnosperm seed.

Answer 5

structures and tissue layers of a gymnosperm seed are:
Megaspore Mother Cell: 2n (diploid)
Female Gametophyte (Embryo Sac): n (haploid)
Ovule: n (haploid)
Pollen Grain: n (haploid)
Zygote: 2n (diploid)
Seed Coat (Integument): 2n (diploid)

Question 6

Pollen tubes (identify them)

Answer 6

originate from the pollen grain, produced by anthers. lands on the stigma of the female reproductive structure (the pistil), then pollen grains germinate

Question 7

pine pollen (identify them)

Answer 7

The male cones, often smaller and more numerous than the female cones, produce and release pollen.