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 plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Reproduction in man is____________

  1. Asexual

  2. Sexual

  3. Vegetative

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

  • Reproduction in man is only sexual. After insemination, there is a fusion of sperm and ovum in the oviduct. This process is called fertilization. After fertilization, implantation takes place in the uterus and the development and the growth of the fetus occurs there.

Therefore, the correct answer is option B.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which of the following is asexual method of reproduction?

  1. Division

  2. Budding

  3. Spore formation

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

The type of reproduction in which no gametes are involved and the new organisms emerge from a single parent only is called asexual reproduction. There is no fusion of gametes in asexual reproduction and the chromosome number also remains constant. Various types of asexual reproduction include division, budding, spore formation, etc.

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

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

The process in which embryo develops from unfertilized oosphere is called as

  1. Parthenogenesis

  2. Apospory

  3. Apogamy

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

Apospory is the development of gametophyte without meiosis forming haploid spores. 

Apogamy is the development of sporophyte without the usual syngamy of gametes. The apogamic sporophyte will be haploid sporophyte as against normal diploid sporophyte. 
Parthenogenesis is the development of an embryo without fertilisation from an unfertilized egg.
Therefore, the correct answer is option A.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Most of the unicellular organisms show

  1. Sexual reproduction

  2. Asexual reproduction

  3. Vegetative reproduction

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

Sexual reproduction is a characteristic of most of the higher life forms. Sexual reproduction characteristically involves reduction division or meiosis to form haploid cells and syngamy or fertilisation to form a zygote. Asexual reproduction is a means of reproduction without involving meiosis or fertilization. Most of the unicellular organisms show asexual reproduction. Vegetative reproduction is a type of asexual reproduction. The term vegetative reproduction is used in the context of plants only. Plants propagate rapidly through vegetative propagation. For example, suckers, rhizomes, runners etc.

Thus, the correct answer is option B.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

In sexual mode of reproduction ................. diversities are generated.

  1. Lesser

  2. Greater

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Sexual reproduction is the fusion of gametes containing genetic material of two individual. This process produces genetically diverse offspring that differ from their parents. The fact that most eukaryotes reproduce sexually is evidence of its evolutionary success. Thus, the correct answer is option B.
Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Chances of inheritable and evolutionary changes are more in such species which reproduce by 

  1. Parthenogenesis

  2. Fission

  3. Sexual reproduction

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

  • Sexual reproduction involves the formation and fusion of gametes.
  • This requires formation of gametes with meiosis in diploid organisms or meiosis taking place in zygote if the organism is haploid. 
  • Due to meiosis, only 50% of the genetic material is passed to the next generation and fusion of gametes results in a unique combination of the genome. 
  • While asexual reproduction results in offsprings with exact genetic material as their parent reducing chances of variations.
So, the correct option is 'Sexual reproduction'.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

How are the modes of reproduction different in unicellular and multicellular organisms?

  1. Unicellular organisms reproduce mainly by asexual method, multicellular organisms reproduce by sexual and asexual methods.

  2. Unicellular organisms reproduce mainly by sexual method, multicellular organisms reproduce mainly by asexual methods.

  3. Unicellular organisms reproduce mainly by propagation, multicellular organisms reproduce mainly by asexual methods.

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

  • Unicellular organisms generally divide by asexual reproduction which involves budding, binary fission, multiple fission, fragmentation, spore formation.
  • Multicellular organisms can divide by sexual as well as asexual methods. For example, vegetative propagation in all plants is a means of asexual reproduction while all higher animals reproduce sexually.

Therefore, the correct answer is option A.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which of the following patterns of reproduction is the major cause of variation?

  1. Sexual reproduction

  2. Asexual reproduction

  3. Both of these

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

  • Sexual reproduction is a biological process that creates a new organism by combining the genetic material of two organisms in a process that starts with meiosis. Hence, it is the cause of variation.

So, the correct answer is option A.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which of the following processes involves fertilization?

  1. Asexual reproduction

  2. Metamorphosis

  3. Sexual reproduction

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

Fertilization is a process of fusion of gametes to produce new individual, which is generally the form of sexual reproduction.
Asexual reproduction is a mode of reproduction by which single parent produces new individuals without fertilization. And so in asexual reproduction, fertilization essentially is not required.
Thus, the correct answer is option C.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Reproduction is needed ________________

  1. To produce offsprings

  2. To ensure the continuation of similar kinds of individuals

  3. For metabolism

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • Reproduction is the biological process of the production of new individual organisms or 'offsprings' from their parents. 
  • It is essential for an organism to ensure its species to survive to the next generation.

Therefore, the correct answer is option D.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Fertilization is necessary even in asexual reproduction.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Fertilization is fusion of male and female gamete which is the key step involved in sexual reproduction.
  • Asexual reproduction does not involve formation of gametes or fertilization. Here, a single organism can produce offsprings.
So, the correct option is 'False'.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which one of the following statements is not correct?

  1. The presence of moisture, nutrients and a large number of spores in the air are responsible for the rapid spreading of bread mold on slices of bread.

  2. In binary fission, the organism divides to form two daughters.

  3. Asexual reproduction involves gametes.

  4. Asexual reproduction involves only one parent.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For the spread of mold, the presence of moisture and a large number of spores are required. Asexual reproduction is a form of reproduction by which offspring arise from a single organism and inherit the genes of that parent only. It does not involve the formation of gametes. Binary fission is a form of asexual reproduction whereby the parent cell divides to form two daughter cells. Thus, the correct answer is option C.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Asexual reproduction produces .............. offspring.

  1. Genetically identical

  2. Larger

  3. Variable

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Asexual reproduction is a type of reproduction by which offspring arise from a single organism. Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent.
Hence, answer is 'Genetically identical'.
Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Which are the different modes of reproduction?

  1. Sexual reproduction

  2. Asexual reproduction

  3. Both a and b

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

Reproduction is broadly categorized into asexual reproduction (involving one parent) and sexual reproduction (involving two parents and gamete fusion). Both are fundamental modes of biological reproduction.

Multiple choice zoology plant reproduction different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

The method of reproduction which generates a great deal of genetic diversity is

  1. Binary fission

  2. Sexual reproduction

  3. Asexual reproduction

  4. Alternation of generations

  5. Binary fission and conjugation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sexual reproduction involves fusion of the sex cells - the sperm and egg. This fusion leads to mixing of genes of 2 sex cells. The resultant offspring has a mixture of genes from both father and mother. This leads to more genetic variation. In asexual reproduction, there is no mixture of genes. Hence no genetic variation or diversity. Thus, the correct answer is option B.