Biology

Biological Reproduction

762 Questions

Biological reproduction encompasses processes like asexual and sexual reproduction, alternation of generations, and specific mechanisms in plants and fungi. This topic is fundamental for biology paper preparation in various competitive exams. Practice these questions to solidify your understanding.

Asexual reproduction structuresPlant and fungi life cyclesCloning and fertilizationReproductive terminology

Biological Reproduction Questions

Multiple choice zoology locomotion and reproduction earthworm - reproductive system reproduction in earthworm introduction to reproduction

Binary fission is found in 

  1. Amoeba

  2. Paramecium

  3. Planaria

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Binary fission is the  method of asexual reproduction in unicellular organisms. It is the process in which the parent divides into two daughter cells which are genetically and morphologically similar. During this process, the nucleus divides into two, followed by the division of the cytoplasm. 
Types of binary fission seen in the organisms are as follows : Simple binary fission, Transverse binary fission and Longitudinal binary fission.
1. Simple binary fission: This type of binary fission occurs in the irregular-shaped organisms such as Amoeba, in which the plane of division is difficult to ascertain.
2. Transverse binary fission: it is the method of the division at a right angle to the long axis of the animal e.g., Paramecium and Planaria.
3. Longitudinal binary fission: In this method division is parallel to the long axis, as in Euglena, Vorticella and in some corals.
Thus, the correct answer is option D.
Multiple choice zoology locomotion and reproduction earthworm - reproductive system reproduction in earthworm introduction to reproduction

Which is the mode of reproduction in amoeba?

  1. Binary fission only

  2. Binary fission and multiple fission

  3. Binary fission and conjugation

  4. Multiple fission only
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Binary fission is the asexual form of reproduction in which single-celled organism divides itself into two cells, in favourable condition.
Multiple fission is the asexual form of reproduction where the parent amoeba cell divides to give many daughter cells in unfavourable condition.
Thus, the correct answer is option B.

Multiple choice zoology reproduction in organisms earthworm - reproductive system reproduction in earthworm introduction to reproduction

Natural parthenogenesis occurs in

  1. Frog

  2. Honeybee to produce drones

  3. Sea urchin

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Parthenogenesis refers to the development of an individual from unfertilized eggs. In honey bees, parthenogenesis is common and here, drones develop as a result of parthenogenesis only. The mode of parthenogenesis is arrhenotoky in which only females are produced. Frog and sea urchin reproduces by artificial parthenogenesis.

Thus, the correct answer is option B.

Multiple choice biology the life cycle of animals how do animals reproduce? excretory, nervous and reproductive system structure and functions of living organisms -ii

Parthenogenesis is the development of an organism directly from : 

  1. Female gametes

  2. Vegetative cells

  3. Fertilized ovum

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Parthenogenesis is a form of asexual reproduction where an embryo develops from an unfertilized egg cell. Since none of the specific options (female gametes, vegetative cells, fertilized ovum) accurately describe the process of development from an unfertilized egg, 'None of these' is correct.

Multiple choice biology the life cycle of animals how do animals reproduce? excretory, nervous and reproductive system structure and functions of living organisms -ii

Which of the following is correct mode of reproduction?

  1. Budding in Yeast

  2. Fragmentation in spongilla

  3. Zoospore in Amoeba

  4. Binary fission in Hydra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Yeasts are fungi that grow as single cells, producing daughter cells either by budding (the budding yeasts) or by binary fission (the fission yeasts)
  • A small bud which will become the daughter cell is formed on the parent (mother) cell and enlarges with continued growth. As the daughter cell grows, the mother cell duplicates and then segregates its DNA. The nucleus divides and migrates into the daughter cell.
  • Hence Budding in Yeast is the correct mode of reproduction.
  • So, the correct answer is 'Budding in Yeast'.
Multiple choice biology the life cycle of animals how do animals reproduce? excretory, nervous and reproductive system structure and functions of living organisms -ii

Which of the following can show somatogenic reproduction?

  1. Paramecium

  2. Amoeba

  3. Hydra

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Asexual reproduction is also called somatogenic reproduction, in these new organisms are produced from the somatic part of the parent organism.

So, the correct option is 'All of these'.

Multiple choice biology classification of plants thallophyta cryptograms kingdom plantae

After liberation of daughter colonies, the parent colony of Volvox

  1. Undergoes sexual reproduction

  2. Forms a new set of daughter colonies

  3. Undergoes fission

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

In Volvox, the parent colony functions as a container for daughter colonies. Once the daughter colonies are fully developed and liberated, the parent colony has no further function and disintegrates.

Multiple choice biology plant growth growth rates and conditions for growth population ecology growth and development

Exponential growth occurs in

  1. Yeast

  2. Bacteria

  3. Asexual reproduction

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Exponential growth is the increase in number or size at a constantly growing rate. It occurs when resources availability is unlimited each species has the ability to realise fully its potential to grow in number.

So, the correct option is 'All of the above'.

Multiple choice botany modes of reproduction sexual reproduction in organisms sexual reproduction & its importance reproduction in organisms

Monoestrous  and diestrous can be differentiated by

  1. Breeding cycle

  2. Reproductive cycle

  3. Ornithine cycle

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

On the basis number of estrous cycle (breeding cycle), females of some species can be monoestrous and diestrous. Monoestrous animals are those in which only one estrous cycle can be seen in a year. For example, dogs, fox etc. Whereas, diestrous animals are those in which two estrous cycles are seen in a year. For example, horse, goats etc. So, the correct option is A.

Multiple choice biology reproduction in organisms sexual reproduction in organisms sexual reproduction & its importance modes of reproduction

Which of the following is exchanged between organisms during conjugation?

  1. Pronuclei

  2. Eggs

  3. Synkaryon

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Conjugation is a process of transfer of genetic material from one cell to another cell through cell to cell contact. It generally involves the transfer of gametic nuclei, also known as pronuclei.
So, the correct is 'Pronuclei'.
Multiple choice biology reproduction in organisms sexual reproduction in organisms sexual reproduction & its importance modes of reproduction

Sometimes a ladder like structure in Spirogyra is formed due to

  1. Lateral conjugation

  2. Asexual reproduction

  3. Scalariform conjugation

  4. Direct conjugation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Conjugation is an exchange of genetic material i.e, mode of sexual reproduction in lower organisms.
Scalariform conjugation: It takes place during the night and between the recently divided cells of the conjugating participating filaments. Opposite cells of two filaments develope a conjugation tube by lying side by side and parallel to each other. The conjugation tube between two filament looks like a ladder, through which gamete from one gametangia passes through to fuse with the passive gamete of another filament.