the kingdom fungi1

8/2/2019 The Kingdom Fungi1

1/25

The Kingdom Fungi

Section 211

This section describes thedefining characteristics of fungi.It also describes the internal

structure of a fungus andexplains how fungi reproduce.


2/25

What Are Fungi?

Circle the letter of each sentencethat is true about fungi.

They are heterotrophs.

They have cell walls.

They are eukaryotic.


3/25

Structure and Function ofFungi

The cell walls of fungi are

made of a complexcarbohydrate called

______.

chitin


4/25


How do fungi digest their food?

They digest food outside theirbodies and then absorb it.


5/25


Is the following sentence true orfalse?

Some fungi are parasites.

true


6/25


Which group of fungi are notmulticellular?

Yeasts


7/25


What are hyphae?

They are the tiny filaments thatcompose multicellular fungi.


8/25


How thick is each hypha?

Each hypha is one cell thick.


9/25


In some fungi, what divides thehyphae into cells containing oneor two nuclei?

Cross walls


10/25


What is a mycelium?

A mycelium is a thick mass ofmany hyphae tangled together. Itcomposes the body of a

multicellular fungus.


11/25


Why is a mycelium well suited toabsorb food?

It permits a large surface area to

come in contact with the foodsource through which it grows.


12/25


What is a fruiting body of a fungus?

It is a reproductive structure growingfrom the mycelium in the soilbeneath it.


13/25


What is a fairy ring, and why doesit form?

A fairy ring is composed of the fruitingbodies of mushrooms that developed atthe outer edges of a single mycelium. It

forms because as time goes by soilnutrients near the center of the myceliumbecome depleted and mushrooms sproutonly at the edges.


14/25



15/25


16/25

Reproduction of Fungi

How does asexual reproduction occurin fungi?

It takes place when cells or hyphaebreak off from a fungus and begin togrow on their own. Some fungi also

produce spores, which can scatterand grow into new organisms.


17/25


In some fungi, spores are

produced in structures called.

Sporangia


18/25


Where are sporangia found in

a fungus?

They are found at the tips of

specialized hyphae calledsporangiophores.


19/25


Sexual reproduction in fungi

usually involves two different.

Mating types


20/25


What is a gametangium?

It is a structure in a fungusthat forms gametes.


21/25


How does a zygote form in fungal

sexual reproduction? When the hyphae of opposite

mating types meet, their twogametangia join, and the haploid

nuclei contained in them fuse toform a diploid nucleus, or zygote.


22/25


Circle the letter of each sentence that is trueabout sexual reproduction in fungi.

The zygote is often the only diploidcell in the funguss entire life cycle.

Gametes of both mating types are

about the same size.

One mating type is a + (plus) andthe other is a (minus).


23/25


24/25

How Fungi Spread

Is the following sentence true or false?

The spores of many fungiscatter easily in the wind.

True


25/25

How Fungi Spread

For a fungal spore to grow,where must it land?

It must land in a favorable

environment where there is aproper combination of

temperature moisture and

the kingdom fungi1

Documents