Tag: zoology

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Questions Related to zoology

Multiple choice zoology asexual reproduction sporulation reproduction in bacteria asexual reproduction in organisms

Basidiospores, Ascospores, Germspores, Meiospores are products of ______ whereas sporangiospores, conidiospore, zoospores are products of _____

  1. Meiosis and Meiosis

  2. Mitosis and Meiosis

  3. Mitosis and Mitosis

  4. Meiosis and Mitosis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
 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'.

Multiple choice zoology asexual reproduction sporulation reproduction in bacteria asexual reproduction in organisms

Zoospores are

  1. motile spores seen in bryophytes

  2. motile sexual spores

  3. motile asexual spores in fungi

  4. motile asexual spores in algae and fungi
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A zoospore is a motile asexual spore that uses a flagellum for locomotion. Also called a swarm spore, these spores are created by some protists, bacteria, and fungi to propagate themselves.
So the correct answer is "motile asexual spores in algae and fungi".
Multiple choice zoology asexual reproduction sporulation reproduction in bacteria asexual reproduction in organisms

Meiosis takes place in Chlamydomonas in?

  1. Zygospore

  2. Zoospore

  3. Hypnospores

  4. Aplanospore
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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’.

Multiple choice zoology asexual reproduction sporulation reproduction in bacteria asexual reproduction in organisms

Non - motile, greatly thickened, asexual spore in chlamydomonas is:

  1. Carpospores

  2. Aplanospores

  3. Akinetes

  4. Hypnospores
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • 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.

So the correct option is 'Hypnospores'.

Multiple choice zoology asexual reproduction sporulation reproduction in bacteria asexual reproduction in organisms

The motile reproductive structures of algae and fungi, which directly give rise to new individuals are called

  1. Zygospores

  2. Zoospores

  3. Cysts

  4. Conidia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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.

So, the correct answer is option B.

Multiple choice zoology asexual reproduction sporulation reproduction in bacteria asexual reproduction in organisms

Sporangium possess spores in

  1. Ferns

  2. Moss

  3. Spirogyra

  4. Fungus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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. 

So, the correct answer is 'Fungus'