Life Cycle of Mosses and Ferns worksheet - Free Printable

You're looking at a worksheet that asks you to arrange the events in the correct order for the life cycles of a moss plant and a fern plant. The worksheet has already labeled one step as “1” in each section — we’ll use that as our starting point and build the sequence from there.

---

## 🌿 Life Cycle of a Moss Plant — Correct Order:

The moss life cycle alternates between two generations: the sporophyte (which produces spores) and the gametophyte (which produces gametes — sperm and egg).

Let’s number the steps logically, starting with the given “1”:

> 1. The spore case ripens and dries out and the spores are released

This is the start of the dispersal phase. Spores are released into the environment.

> 2. Spores are carried by the wind into a suitable habitat where they grow into new moss plants (gametophyte)

Spores land and germinate into the gametophyte generation, which is the dominant, visible moss plant.

> 3. Male moss plants produce sperm cells and female moss plants produce egg cells

The gametophyte develops reproductive organs: antheridia (male) and archegonia (female).

> 4. Water carries the sperm cells to the female moss plant where fertilization occurs

Mosses require water for sperm to swim to the egg — this is key to their reproduction.

> 5. A spore case grows out of the moss (sporophyte)

After fertilization, a zygote develops into the sporophyte (dependent on the gametophyte), which eventually forms a capsule (spore case) to produce spores again — completing the cycle.

✔ Final Order for Moss:

| Step | Event |
|------|-------|
| 1 | The spore case ripens and dries out and the spores are released |
| 2 | Spores are carried by the wind into a suitable habitat where they grow into new moss plants (gametophyte) |
| 3 | Male moss plants produce sperm cells and female moss plants produce egg cells |
| 4 | Water carries the sperm cells to the female moss plant where fertilization occurs |
| 5 | A spore case grows out of the moss (sporophyte) |

---

## 🌿 Life Cycle of a Fern Plant — Correct Order:

Ferns also alternate between sporophyte and gametophyte generations, but the sporophyte (the fern plant you see) is dominant.

Given:

> 1. The spore cases on the underside of a frond mature and spores are released.

This is the release of spores from the adult fern (sporophyte).

> 2. The spore produces a tiny heart-shaped plant that has the male and female reproductive organs (gametophyte)

Spores germinate into the prothallus (gametophyte), which is small and heart-shaped, and bears both antheridia and archegonia.

> 3. Water transports the sperm cells to the egg cells and fertilization occurs

Again, water is needed for sperm to swim to the egg.

> 4. A young fern plant (fiddlehead) grows and develops fronds with spore cases

After fertilization, a new sporophyte grows — starting as a fiddlehead — which matures into the familiar fern plant with fronds and spore cases.

✔ Final Order for Fern:

| Step | Event |
|------|-------|
| 1 | The spore cases on the underside of a frond mature and spores are released. |
| 2 | The spore produces a tiny heart-shaped plant that has the male and female reproductive organs (gametophyte) |
| 3 | Water transports the sperm cells to the egg cells and fertilization occurs |
| 4 | A young fern plant (fiddlehead) grows and develops fronds with spore cases |

---

## ✔ Summary Answer for Worksheet:

Life Cycle of a Moss Plant:

1. The spore case ripens and dries out and the spores are released
2. Spores are carried by the wind into a suitable habitat where they grow into new moss plants (gametophyte)
3. Male moss plants produce sperm cells and female moss plants produce egg cells
4. Water carries the sperm cells to the female moss plant where fertilization occurs
5. A spore case grows out of the moss (sporophyte)

Life Cycle of a Fern Plant:

1. The spore cases on the underside of a frond mature and spores are released.
2. The spore produces a tiny heart-shaped plant that has the male and female reproductive organs (gametophyte)
3. Water transports the sperm cells to the egg cells and fertilization occurs
4. A young fern plant (fiddlehead) grows and develops fronds with spore cases

---

📌 Note: In both cycles, water is essential for fertilization because sperm must swim to the egg. This is why mosses and ferns thrive in moist environments.

Let me know if you’d like a diagram or mnemonic to remember these!