Which of the following statements about Phaeophyceae is correct?

Vegetative reproduction occurs by fragmentation.

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Asexual reproduction is by biflagellate pear-shaped zoospores.

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In sexual reproduction, gametes are pyriform and bear 2 laterally attached flagella.

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All are correct.

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Solution

The correct option is D All are correct.
Vegetative reproduction takes place by fragmentation. First propagules are developed and then after detachment new plants are formed.
Asexual reproduction takes place by biflagellate pear-shaped zoospores.
Sexual reproduction ranges from isogamy to oogamy through anisogamy. Gametes al bears 2 laterally attached flagella.
In most of the members, fertilization is external.
So, the correct answer is option D.

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Similar questions

Q. Pick the option which includes all the correct statements from the following.

A. Chlorophyceae: Chlorophyll a and chlorophyll c pigments, starch-stored as food, asexual reproduction by zoospores.

B. Phaeophyceae: Fucoxanthin pigment, mannitol-stored as food, pear-shaped zoospores with 2, unequal sized apical flagella.

C. Rhodophyceae: Phycoerythrin pigment, floridean starch, reproduction by non-motile spore.

Q. Which of the following statement is correct.

Statement I: Asexual reproduction involves fusion of gametes.
Statement II: Asexually produced offspring are genetically identical.
Statement III: Asexual reproduction occurs in unfavorable condition only.

Choose the correct statements about reproduction.

a) Reproduction produces progeny with more or less similar features to the parents.

b) Reproduction occurs by involving one parent (asexual) or two parents (sexual).

c) Budding and fragmentation are the types of asexual reproduction.

d) Reproduction is not observed in non-living organisms.

Identify the incorrect statement.
(a) In asexual reproduction, the offspring produced are morphologically and genetically identical to the parent.
(b) Zoospores are sexual reproductive structures.
(c) In asexual reproduction, a single parent prodices offspring with or without the formation of gametes.
(d) Conidica are asexual structure in Penicillium.

Question 4
Offsprings which are formed by the asexual reproduction methods have greater similarity among themselves because

(i) Asexual reproduction involves only one parent
(ii) Asexual reproduction does not involve two gametes
(iii) Asexual reproduction occurs before sexual reproduction
(iv) Asexual reproduction occurs after sexual reproduction

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)

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