Yeast

Q.

Give some examples of Deuteromycetes.

Q. Why does yeast belong to kingdom fungi though it is not multicellular? According to our NCERT book the features of fungi are multicellular eukaryotic organisms possessing cell wall and protista are eukaryotic unicellular organisms. So from these statements, yeast must be placed in kingdom protista since it is unicellular eukaryotic.

Q.

Name two plant diseases caused by fungi.

Q.

Yeast reproduces asexually by .......

Q.

Common fungi used in preparing the bread is ______.

Q. How do mushrooms reproduce?

Q.

Why bread or idly dough rises?

Q. Yeast is a heterotroph.

1. True
2. False

Q.

Spore formation is an asexual mode of reproduction. Which of the following organisms reproduces asexually through spores?

1. Rhizopus

2. Planaria

3. Yeast

4. Hydra

Q.

The shape of yeast cell is:

1. spherical

2. oval

3. both oval and spherical

4. none of these

Q.

Which of the Following is Incorrect about Protista?

1. Some have flagella or cilia

2. All are single-cell eukaryotes

3. Members of Protista are primarily terrestrial

4. Sexually reproduce by cell fusion and zygote formation.

Q.

Are all prokaryotes harmful?

Q.

Yeast is used to manufacture alcoholic beverages like wine and beer. It is used in the production of breads. It is also used as a nutrient supplement for human beings.

Which of the following processes uses yeast to make wines and breads?

1. Photosynthesis

2. Fermentation

3. Decomposition

4. Chemosynthesis

Q.

At what temp do mold spores die?

Q.

Does Aspergillus belong to Ascomycetes?

Q.

Saprophytic plants lack ______.

Q. Which of the following statement(s) is/are true about yeast?

1. Yeast is a type of fungi.
2. Yeast helps in fermentation.
3. Yeast exhibits symbiosis.
4. Yeast is used in baking industry.

Q.

Which is the perfect stage of fungus?

Q.

What is budding? Give two examples of budding.

Q.

What is the cell wall composition of pythium yeast and bacteria?

Q.

Which of the following micro organisms is involved in yoghurt production?

1. Bacteria

2. Protists

3. Fungi

4. Virus

Q. Given below is a picture of yeast cells.

Identify all the A's in the picture.

1. Nucleus
2. Cytoplasm
3. Bud
4. Cell wall

Q.

Which is deuteromycetes fungus?

Q. Baker’s yeast is also known as:

1. Saccharomyces cerevisiae
2. Saccharomyces ludwingii
3. Saccharomyces octosporus
4. Schizosaccharomyces

Q.

Saprophytic plants lack

1. Roots

2. Chlorophyll

3. Flowers

4. Vascular tissues

Q. Question 45 (g)
Fill in the blanks
(g) Common fungi used in preparing the bread is__.

Q.

Name one commercial use of yeast.

Q.

Identify the incorrect statement regarding fungi.

1. Fungal cells possess cell wall made up of chitin.

2. Fungi are eukaryotes.

3. Fungi show autotrophic mode of nutrition

4. Fungi show autotrophic mode of nutrition

Q.

Yeast is a type of fungus used for various purposes. It is very beneficial for human beings.

Yeast is used in

1. Decomposing waste

2. Nitrogen fixation

3. Alcoholic beverages

4. Producing antibiotics

Q. Multicellular organisms and unicellular yeasts are contained in

1. Animalia
2. Plantae
3. Protista
4. Eubacteria
5. Fungi