Identify each of the following structures as haploid or diploid.
(a) sporophyte
(b) spore
(c) gametophyte
(d) zygote

a) Sporophyte - Diploid

b) Spore - Haploid

c) Gametophyte - Haploid

d) Zygote - Diploid

Explanation: Sporophyte is the diploid phase of the plant. It means it has 2 set of chromosomes (2n). Function of Sporophyte is to produce haploid spores.

Spores are haploid units of the plants. Spores are the reproductive units of the plant so they develop into new plant.

Gametophyte is the haploid phase in the life cycle of plant. There are two types of Gametophytes : Male gametophyte and Female gametophyte.

Zygote is the diploid unit of the plant. Which formed by the fusion of two gametes as the result of fertilization.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.