Reproduction in Fungi

Q.

What are the preventive measures for Amoebiasis?

Q.

Differentiate between a zoospore and a zygote.

Q. What does the dikaryotic phase that is seen in some fungal members mean?

1. Two cells in a hypha
2. Two hyphae in a mycelium
3. Two nuclei in a cell
4. Two gametes in a cell

Q. A good example of heterothallism can be seen in

1. Puccinia
2. Rhizopus
3. Pinus
4. castor bean

Q. Choose the incorrect match with respect to different classes of fungi.

1. Phycomycetes – coenocytic mycelium
2. Ascomycetes – monokaryotic aseptate mycelium
3. Phycomycetes – zoospore formation
4. Zygomycetes – zygophore formation

Q.

What is sporangiophore in botany?

Q.

What do you mean by Plasmogamy and Karyogamy?

Q.

What is the life cycle of fungi?

Q. Given below are assertions and reason. Point out:
A. If both are true with reason being the correct explanation
B. Both true but reason not correct explanation
C. Assertion is true but reason is wrong
D. Both assertion and reason are wrong

Assertion: As we go from the lower to the higher forms of the fungal members, there is a decrease in the complexity of the sexual apparatus.
Reason: Sexual reproduction involves plasmogamy, karyogamy and meiosis.

1. A
2. B
3. C
4. D

Q.

What is dikaryophase in fungi?

Q.

What is an example of class basidiomycetes?

Q.

Plasmogamy Is Fusion Of_____.

1. Sperm and Egg.

2. Sperm and two polar nuclei.

3. Two haploid cells without nuclear fusion.

4. Two haploid cells Including their nuclei.

Q.

Which of the following is the correct sequence of the sexual cycle in higher fungi?

1. Meiosis – Plasmogamy – Karyogamy

2. Meiosis – Karyogamy – Plasmogamy

3. Plasmogamy – Karyogamy – Meiosis

4. Karyogamy – Plasmogamy – Meiosis

Q.

What are club fungi named for?

Q. Bottle shaped structures that bear conidia in Penicillium are called

1. metulae
2. sterigmata
3. paraphyses
4. hyphae

Q. Dikaryon formation is the characteristic feature of

1. ascomycetes and basidiomycetes
2. ascomycetes and phycomycetes
3. phycomycetes and zygomycetes
4. phycomycetes and basidiomycetes

Q.

A dikaryon means

1. a cell with two diploid nuclei

2. a cell with diploid nucleus formed after karyogamy

3. a cell with two haploid nuclei formed after plasmogamy

4. a product of double fertilisation in angiosperms

Q.

Spores are formed during ________________ conditions

Q. Fruit of asteraceae is

1. caryopsis
2. cypsela
3. berry
4. achenes of drupes

Q. Fusion of protoplasms between two fungal gametes is called

1. None of the above
2. Both (a) and (b)
3. Plasmogamy
4. Karyogamy

Q.

The scientific names of fungi, mosses ferns conifers and angiosperm are based on agreed principles and criteria which are provided in

A. ICBN

B .ICVN

C .ICNB

D .ICZN

Q. In Rhizopus, when does meiosis occur?

1. During zoospore formation
2. During zygospore formation
3. Vegetative reproduction
4. During spore formation

Q. Eucalyptus is different from Cedrus in the presence of

1. syngamy
2. triple fusion
3. seeds
4. archegonia

Q. Some fungi exhibit a phase in which a single cell has two nuclei. This phase is known as

1. diploid phase
2. nuclear phase
3. karyotic phase
4. dikaryophase

Q. Why phragmoplasts are not formed during cytokinesis in animal cell ?

Q.

Define heterothalism.

Q.

What is the result of Plasmogamy?

Q. Assertion :Reproduction by zoospores occur in some higher fungi. Reason: Zoospores are non-motile and non-flagellated spores.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Some fungi exhibit a condition wherein they have two haploid nuclei (n+n) conditions after plasmogamy. This condition is called:

1. metaphase
2. synkaryon phase
3. dikaryophase
4. prophase

Q.

4. Discuss the features of Chlamydomonas.