Biology

Biological Reproduction

806 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 applications of biotechnology cloning process of cloning gene cloning

The term 'clone' cannot be applied to offspring formed by sexual reproduction because

  1. Offspring do not possess exact copies of parental DNA

  2. DNA of only one parent is copied and passed on to the offspring

  3. Offspring are formed at different times

  4. DNA of parent and offspring are completely different
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

During sexual reproduction, fertilization creates a single-celled zygote which includes genetic material from both gametes. In a process called genetic recombination, genetic material (DNA) joins up so that homologous chromosome sequences are aligned with each other, and this is followed by an exchange of genetic information. Whereas, cloning is the process of producing genetically identical individuals of an organism either naturally or artificially. In nature, many organisms produce clones through asexual reproduction.

So, the correct option is 'Offspring do not possess exact copies of parental DNA'.

Multiple choice zoology applications of biotechnology cloning process of cloning gene cloning

Offsprings formed by asexual reproduction exhibit remarkable similarity. This is known as

  1. Clone

  2. Gamete

  3. Androecium

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

Cloning is the production of identical genetic copies. All forms of asexual reproduction are variations of the cell division process of mitosis. Asexual reproduction is sometimes called as cloning and the individual copy produced by cloning method is called as a clone.

Multiple choice zoology applications of biotechnology cloning process of cloning gene cloning

A large number of bacteria produced from a single bacterium is called as 

  1. Deme

  2. Population

  3. Clones

  4. Offspring
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Cell clones can form by cell division from a single transformed cell and be propagated to produce a large number of cells with an identical foreign DNA molecules that we wish to clone into the cells, a process known as transformation. Amplification process produces a huge number of identical bacterial cell clones, each with the same foreign DNA sequence.
Therefore, the correct answer is option C.
Multiple choice biology sexual reproduction in flowering plants earthworm - reproductive system reproduction in earthworm introduction to reproduction

Apomixis is

  1. Vegetative reproduction

  2. Sexual reproduction

  3. Asexual reproduction, which is without meiosis and gametogenesis

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

Apomixis is a process of asexual method of seed formation in which embryo develops from maternal tissues of the ovule without the processes of meiosis and gametogenesis. It is seen in higher plants. It conserves the genetic structure of plants. Heterosis can be maintained permanently in crop plants by this process. 

Thus, the correct answer is option C.

Multiple choice zoology reproductive system of human earthworm - reproductive system reproduction in earthworm introduction to reproduction

A organism in which shows the secondary sexual characters of both male and female is called as

  1. Intersex

  2. Hermaphrodite

  3. Bisexual

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

Intersex is referred to as the variation in sex characteristics that does not allow the individual to be distinctly called as male or female.
Hermaphrodite is an organism who has both male and female sex organs (not necessarily characteristics).
Bisexual means hermaphrodite.
If an individual exhibits both male and female secondary sexual characteristics is called as gynandromorph.
So, the correct answer is option D.

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'.