3. Fungi Kingdom

Question 1

Topic - Fungi

Question 2

They grow in warm and humid places.
T/F

Answer 2

True

Question 3

They are found in air, water, soil, animal, and plant.
T/F

Answer 3

True,
Because fungi are cosmopolitan

Question 4

Fungi are a unique kingdom of heterotrophic organisms.
T/F

Answer 4

True

Question 5

Most fungi are ______, and some are parasites.

Answer 5

Saprophytes (absorb soluble organic matter from
dead substrates)

Question 6

Examples of some symbionts fungi.
I. Lichens -
II. Mycorrhiza -

Answer 6

I. Lichens (fungi+algae)
II. Mycorrhiza (fungi+Roots of higher plants)

Question 7

Topic - Examples of Fungi

Question 8

Bread mold, Orange rots, Edible mushrooms, and Poisonous toadstools are all Fungi.
T/F

Answer 8

True

Question 9

Other fungi cause diseases in plants and animals.
An example is White rust caused by ______.

Answer 9

Wheat rust-causing Puccinia

Question 10

White spots on _____ leaves are due to a parasitic fungus.

Answer 10

Mustard leaves

Question 11

Some fungi are the source of antibiotics.
Example.

Answer 11

Penicillium fungus produces Penicillin antibiotics

Question 12

Some unicellular fungi are used to make bread and beer.
Example.

Answer 12

Yeast - Saccharomyces cerevisiae
(Baker’s and Brewer’s yeast)

Question 13

Topic - Body Organisation in Fungi

Question 14

Except for unicellular yeasts, fungi are filamentous.
T/F

Answer 14

True

Question 15

Fungi body is produced by (long & slender) filamentous thread-like structures known as:

Answer 15

Hyphae

Question 16

The network of hyphae is known as:

Answer 16

Mycelium

Question 17

Some hyphae are continuous tubes filled with multinucleated cytoplasm. These are called:

Answer 17

Coenocytic hyphae

Question 18

Others have ______ in their hyphae.

Answer 18

Septae or Cross walls

Question 19

I. Without partition =
II. With partition =

Answer 19

I. Aseptate Hyphae
II. Septate Hyphae

Question 20

The fungal cell wall is made of ______.

Answer 20

1. Chitin (Polymer of N-acetyl glucosamine)
2. Polysaccharides

Question 21

Topic - Reproduction in Fungi

Question 22

Vegetative propagation by:

Answer 22

I. Fragmentation
II. Fission
III. Budding (Yeast)

Question 23

Asexual reproduction by spores such as:

Answer 23

I. Conidia (Non-motile)
II. Sporangiospores (Non-motile)
III. Zoospores (Motile)

Question 24

Sexual reproduction by _____.
It is produced in distinct structures called fruiting bodies.

Answer 24

I. Oospores
II. Ascospores
III. Basidiospores

Question 25

Topic - Sexual Cycle

Question 26

The sexual cycle involves three steps:

Answer 26

I. Plasmogamy (protoplasm fusion between two motile or non-motile gametes)
II. Karyogamy (Fusion of two nuclei)
III. Meiosis (Zygote gives rise to haploid spores)

Question 27

When a fungus reproduces sexually, two ______ (diploid/haploid) hyphae of compatible mating types come together and fuse.

Answer 27

Haploid

Question 28

In some fungi, the fusion of two haploid cells immediately results in ______.

Answer 28

Diploid cells (2n)

Question 29

In ascomycetes and basidiomycetes, a dikaryotic stage or Dikaryophase occurs. Such a condition is called ______.

Answer 29

Dikaryon (n + n, i.e., two nuclei per cell)

Question 30

Later, in Dikaryophase, parental nuclei fuse, and the cells become diploid zygotes (then Meiosis, then the Haploid spore).
T/F

Answer 30

True

Question 31

The fungi form ______ bodies in which reduction division occurs, leading to the formation of haploid spores.

Answer 31

Fruiting bodies

Question 32

*Based on the morphology of mycelium, mode of spore formation & fruiting bodies,
Fungi are classified into different classes:

Answer 32

1. Phycomycetes
2. Ascomycetes
3. Basidiomycetes
4. Deuteromycetes