Ascomycetes

Q.

What is the difference between zoospores and conidia?

Q.

What is the method of asexual reproduction in Penicillium?

Q.

Why are mushrooms considered saprophytic fungi?

Q.

Is Plasmogamy immediately followed by Karyogamy?

Q.

What is a dikaryon?

Q.

At a stage of their cycle, ascomycetes fungi produce the fruiting bodies like apothecium, perithecium or cleistothecium. How are these three types of fruiting bodies different from each other?

Discuss the type of fruiting bodies formed by ascomycetes fungus and differentiate accordingly on the basis of there structures.

Q.

What are the 5 characteristics of Hepaticopsida?

Q.

Dikaryon and dikaryophase is seen in

1. Phycomycetes

2. Basidiomycetes

3. Ascomycetes

4. Both B and C

Q.

What is plasmogamy?

Q. Identify the label A, B, C and D in the following figure–

1. A-Plasma membrane, B-cell wall, C-RNA, D-Spore formation
2. A-Cell wall, B-Cell membrane, C-DNA, D-Binary fission
3. A-Mucilaginous sheath, B-cell membrane, C-RNA, D-Conjugation
4. A-Plasma membrane, B-Mucilaginous sheath, C-DNA, D-Transformation
   

Q. Who explained first that a new life can arise only from pre-existing life?

1. Louis Pasteur
2. S.L. Milner
3. Oparin and Haldane
4. Charles Darwin

Q. Given organisms belongs to how many genera?
Wheat, Brinjal, Potato, Lion, Dog, Tiger

1. 2
2. 3
3. 4
4. 5

Q. Characteristics of slime moulds

Q.

What is karyogamy?

Q.

Monascus purpureus is a yeast used commercially in the production of:

1. Ethanol

2. Streptokinase for the remaining of dots from blood vessels.

3. Citric acid

4. Blood cholesterol-lowering statins

Q. In which of the following industries do we find the economic importance of Saccharomyces cerevisiae?

1. Baking
2. All of the above
3. Alcohol
4. Biofuel

Q.

Difference between primary and secondary protonema.

Q. Which microbe is used to produce a drug that lowers cholesterol levels in the blood ?

1. Tricoderma polysporum
2. Monascus purpureus
3. Streptococcus uberis
4. Clostridium butylicum

Q.

What is meant by plasmogamy?

Q. The product of which of the following organisms has been commercialised as blood cholesterol lowering agent

1. Saccharomyces cerevisiae
2. Monascus purpureus
3. Aspergillus niger
4. Trichoderma polysporum

Q. Penicillin was first obtained from

1. Puccinia graminis
2. Aspergillus niger
3. Saccharomyces cerevisiae
4. Penicillium notatum

Q.

Neurospora an ascomycetes fungus has been used as a biological tool to understand the mechanism of plant genetics much in the same way as Drosophila has been used to study animal genetics. What makes Neurospora so important as a genetic tool?

Q.

Why is Neurospora used as a model organism in genetics?

Q.

The term antibiotic was first used by

1. Lister

2. Waksman

3. Pasteur

4. Flemming

Q. Where does this evidence come from? – 'crossing over takes place at a four-stranded stage and not at two stranded stages of chromosomes'.

1. 4 : 4 arrangement of ascospores in Neurospora
2. Studies of meiosis in maize
3. Studies on linkage maps of chromosomes in Drosophila
4. 2 : 2 : 2 : 2 arrangement of ascospores in Neurospora

Q. Ergot of rye is caused by a species of :

1. Phytophthora
2. Uncinula
3. Ustilago
4. Claviceps

Q.

What is the ploidy of dikaryon?

Q. Match the terms given in column-I with their examples given in column-II and choose the correct option.
$$\begin{array}{cc}Column-I& Column-II\\ \left(Terms\right)& \left(Examples\right)\\ A.Ascus& I.Spirulina\\ B.Basidium& II.Penicillium\\ C.Protista& III.Agaricus\\ D.Cyanobacteria& IV.Euglena\\ E.Animalia& V.Sponges\end{array}$$

1. A – II, B – III, C – IV, D – V, E – I
2. A – I, B – II, C – III, D – V, E – IV
3. A – II, B – V, C – III, D – I, E – IV
4. A – II, B – III, C – IV, D – I, E – V

Q. Assertion: Wine, bread and cakes are products of microbial activity
Reason: Yeast breaks down glucose into carbon dioxide and ethanol

1. Both the assertion and reason are true and the reason is the correct explanation of the assertion
2. Both the assertion and reason are true but the reason is not the correct explanation for the assertion
3. The assertion is true but the reason is false
4. Both assertion and the reason are false

Q. Fungi shows asexual reproduction by all of the following kinds of spores except

1. conidia
2. oospores
3. zoospores
4. sporangiospore