Which of the following class of fungi is being described by the given statements ?
(i) They are found in aquatic habitats and on decaying wood in moist and damp places.
(ii) Mycelium is aseptate and coenocytic.
(iii) Asexual reproduction takes place by zoospores (motile) or by aplanospores (non-motile).
(iv) Some common examples are Mucor, Rhizopus and Albugo.

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Solution

Phycomycetes is a large and important class of parasitic or saprophytic fungi. They are commonly called algal fungi.

The plant body ranges from an undifferentiated mass of protoplasm to a well developed and much-branched mycelium.

Mycelium is aseptate and coenocytic.

Asexual reproduction takes place by spores and sexual reproduction by the formation of conidia or sporangia.

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Question 12

Members of phycomycetes are found in

(i) Aquatic habitats

(ii) On decaying wood

(iii) Moist and damp places

(iv) As obligate parasites on plants

Choose from the following options.

(a) (i) and (iv) (b) (ii) and (iii) (c) All of these (d) None of these

Q. Which of the following class of fungi is being described by the given statements ?
(i) They are found in aquatic habitats and on decaying wood in moist and damp places.
(ii) Mycelium is aseptate and coenocytic.
(iii) Asexual reproduction takes place by zoospores (motile) or by aplanospores (non-motile).
(iv) Some common examples are Mucor, Rhizopus and Albugo.

Q. Members of phycomycetes

(i) exhibit asexual reproductions by zoopores and aplanospores

(ii) exhibit sexual reproduction by isogamy, anisogamy and oogamy

(iii) have aseptate and coenocytic mycelium

(iv) are found in aquatic habitats and on decaying wood in moist and damp places or as obligate parasites on plants.

Q. In Phycomycetes:
1. Asexual reproduction takes place by zoospores (non-motile) or by aplanospores (motile).
2. These spores are exogenously produced in sporangium.
3. A zygospore is formed by fusion of two gametes; if these gametes are similar in morphology (oogamous) or dissimilar (isogamous)

In Phycomycetes: 1. Asexual reproduction takes place by zoospores (non-motile) or by aplanospores (motile). 2. These spores are exogenously produced in sporangium. 3. A zygospore is formed by fusion of two gametes; if these gametes are similar in morphology (oogamous) or dissimilar (isogamous)
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