Tag: asexual reproduction
Questions Related to asexual reproduction
A motile asexual spore with flagella is known as
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Zoospore
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Zygospore
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Tetraspore
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Zygote
Sexual spores produced by Penicillium
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Conidiospores
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Basidiospores
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Ascospores
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Zoospores
Basidiospores, Ascospores, Germspores, Meiospores are products of ______ whereas sporangiospores, conidiospore, zoospores are products of _____
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Meiosis and Meiosis
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Mitosis and Meiosis
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Mitosis and Mitosis
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Meiosis and Mitosis
| Mitosis | Meiosis |
|---|---|
| It is a process where a single cell divided into two identical cells. It is an equational division (i.e no. of chromosomes remains same) | It is a process where a single cell twice to produces four cells containing half the original amount of genetic information. It is a reductional division (i.e.no. of chromosomes reduces to half ). |
| It mainly takes place in somatic cells | It takes place in germinal cells or spore mother cells. |
| Sporangiospores, conidiospores, zoospores | Basidiospores, Ascospores, Germspores, Meiospores |
So, the correct answer is 'Meiosis and Mitosis'.
Zoospores are
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motile spores seen in bryophytes
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motile sexual spores
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motile asexual spores in fungi
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motile asexual spores in algae and fungi
Meiosis takes place in Chlamydomonas in?
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Zygospore
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Zoospore
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Hypnospores
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Aplanospore
A.zygospore – it is the product of fertilization. It is a diploid structure in the life cycle of Chlamydomonas. It undergoes meiosis and form into a new Chlamydomonas cells.
B.Zoospore – Flagellated, motile structures formed during asexual reproduction in Chlamydomonas is called Zoospore. It is haploid, formed by mitosis.
C.Hyponospore – Thick walled resting spore formed during unfavourable conditions is called Hypnospore.
D.Aplanospore – Aflagellated, non motile spores formed during asexual reproduction is called aplanospore.
So, the correct option is ‘zygospore’.
Non - motile, greatly thickened, asexual spore in chlamydomonas is:
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Carpospores
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Aplanospores
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Akinetes
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Hypnospores
- Thick-walled non-motile spores formed to tide over unfavorable condition is called Hypnospores. They germinate on the arrival of favorable conditions. e.g., Chlamydomonas, Ulothrix.
The motile reproductive structures of algae and fungi, which directly give rise to new individuals are called
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Zygospores
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Zoospores
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Cysts
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Conidia
The motile reproductive structures of algae and fungi, which directly give rise to new individuals are called zoospores. It is a asexual motile spore. It uses flagella for locomotion. The zoospores are liberated either by the disintegration of the zoosporangial wall or by the formation of an apical pore on the zoosporangium. After liberation the zoospores swim for a while, then withdraw their flagella, encyst and ultimately germinate into new plants.
Conidia of Albugo are arranged ____________.
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Irregularly
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Acropetally
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Basipetally
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Intercalary
Sporangium possess spores in
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Ferns
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Moss
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Spirogyra
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Fungus
Fungi reproduces asexually by means of sporangia. Sporangiospores are spores that are produced in a sporangium (plural: sporangia). A sporangium in fungi (but not mosses and some other organisms) is simply a cell containing spores.
In ferns, spores are produced in
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Sori
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Roots
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Stem
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Sporangiophore
Sori are asexually reproducing structures produced on the abaxial surface of the leaf and produce haploid spores, that germinates to form the independent gametophyte.