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 reproduction in animals different modes of reproduction sexual and asexual reproduction lifespan, reproduction and variation

Sexual reproduction involves formation of the male and female gametes by?

  1. Same individuals

  2. Different individuals of the opposite sex

  3. Different individual of the same sex

  4. Either A or B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gametes are the cells that merge with each other to create a unique organism during sexual reproduction. Gametes are the reproductive cells used to make a new organism called a zygote during sexual reproduction. There are distinct gametes in men and women. The sperm is called the male gamete. It's much lower and very mobile than the female gamete. It has a lengthy tail, flagellum, which makes it possible to move towards the female gamete. The egg or ova is called the female gamete. It's much bigger than the sperm and it's not moving

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

Which of the following statements can be related to sexual reproduction?

  1. Gametes are usually haploid.

  2. Gametes are usually diploid.

  3. The zygote is usually haploid.

  4. The chromosome number is reduced during mitosis.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sexual reproduction in higher organisms is characterized by the formation of haploid gametes and their fertilization. The haploid gametes are produced by meiosis which has a half number of chromosomes as compared to the parent cell. It is also known as the reductional division. The haploid gametes obtained from both the parent fuse to form a diploid zygote. Mitosis is an equational division so it will not lead to the reduction in the chromosome.

So, the correct answer is option A.

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


In the sexual mode of reproduction, greater diversities are generated.

  1. True

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

The given statement is true. The daughter cells produced by asexual reproduction are similar to their parent i.e., they are genetically identical to their parent. In contrast, sexual reproduction produces a similar but genetically different offspring. In the process of sexual reproduction, haploid gametes produced by the meiotic division fuses to form a diploid zygote. A child inherits half of the genetic material from each parent. So, it may be they look alike but they are not identical to their parents. Instead, the child has the combination of characteristics inherited from both parents. Therefore, we can say that in sexual mode of reproduction, greater diversities are generated.

Multiple choice biology for the continuity of generation fertilization in human being fertilization in humans human fertilization

The only haploid stage in an animal life cycle is the

  1. Zoospores

  2. Spores

  3. Gametes

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

A zoospore is a motile asexual spore that uses a flagellum for locomotion.
Spores are formed by certain fungi and algae, in response to unfavorable growing conditions.
A gamete is a reproductive cells that unite at fertilization to form a new cell (zygote). This gamete is haploid in nature.
Thus, the correct answer is option C.

Multiple choice biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Sexual maturity of larva is called as 

  1. Paedogenesis

  2. Parthenogenesis

  3. Parthenocarpy

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

The attainment of sexual maturity with the retention of at least some larval morphology and reproduction of larval individuals is known as paedogenesis. Hence, the correct answer is option A.

Multiple choice biology reproduction in higher plants growth and development in plants sexual reproduction in plants post fertilization - plants

Parthenogenesis is the development of

  1. Fruit without hormones

  2. Fruit without fertilisation

  3. Egg without fertilisation

  4. Embryo without fertilisation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Parthenogenesis is a type of asexual reproduction in which the offspring develops from unfertilized eggs. It is particularly common among arthropods and can also be found in some species of fish, amphibians, birds and reptiles, but not in mammals. 

Therefore, the correct answer is option C.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Read the following statements and select the correct option.


Statement 1: Reproduction cannot be considered as a defining property of living organisms.
Statement 2: There are many living organisms which do not reproduce, e.g., mules, worker bees, etc.

  1. Both statements 1 and 2 are correct.

  2. Statement 1 is correct but statement 2 is incorrect.

  3. Statement 1 is incorrect but statement 2 is correct.

  4. Both statements 1 and 2 are incorrect.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A- Reproduction cannot be considered an inclusive defining characteristics of living organisms of the following. In single celled organism growth and reproduction are synonym as increased in no. of cells is considered as growth as well reproduction. Organisms like mule and liger can't reproduce fertile offspring.

B- Growth is the increase in the number or mass of cells. However, reproduction in case of unicellular organisms is also achieved by an increase in cell number. Thus, growth and reproduction are synonymous and cannot be the distinguishing factor. Moreover, there are many organisms such as worker bees, mules, infertile human couples that cannot reproduce. 
So, the correct option is ' Both statements 1 and 2 are correct'.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

The property which is present universally in living organism is 

  1. Reproduction

  2. Metabolism

  3. Cellular organisation

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

Metabolism is the sum of all chemical reactions occurring within a living organism and is considered a defining characteristic of life, as it is present in all living organisms.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

In nonliving things

  1. Growth occurs from inside

  2. Growth occurs from outside

  3. Reproduction is asexual

  4. Cell is the structural unit
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Non-living things do not grow through internal metabolic functions but by adding on from the outside. Non-living things do not need the energy to continue to exist. Some nonliving things such as crystals grow by accumulating more of the same material of which they are made.
  • Living things exhibit growth, movement, reproduction, respiration and metabolism. Living things use energy, respond to stimuli and adapt to their environment.
  • So, the correct answer is 'Growth occurs from outside'.
Multiple choice botany life processes in living organisms- part 1 introduction to flower pre fertilization - plants modes of reproduction

Sporic meiosis occurs in

  1. Animals

  2. Thallophyta

  3. Bryophyta

  4. All plants except thallophyta
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sporic meiosis, has mitosis in two stages, both the diploid and haploid stages, termed diplobiontic. 

Sporic meiosis occurs in all plants except thallophyta. In sporic meiosis, the division by mitosis happens to create a multicellular diploid organism, the sporophyte. Some of the cells of the sporophite then produce spores through a sporic meiosis. In this case, the meiosis is sporic (because it produces spores). The spores then produce a haploid gametophyte which, in turn, will produce the gametes through mitosis. 

Multiple choice botany the life cycle of plants parthenocarpic fruits parthenogenesis asexual reproduction

Which one of the following organisms reproduces sexually only once in its life time?

  1. Banana plant

  2. Mango

  3. Tomato

  4. Eucalyptus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. Banana is a perennial plant. It reproduces sexually only once in its lifetime. Hence, it flowers only once its life. After reproducing sexually once, reproduction in the banana plant is done by parthenocarpy. 
B. Mango is a perennial plant because it grows and flowers for more than two years.
C. Tomato is a perennial plant as it continues to grow and flowers for than two years.
D. Eucalyptus is an annual plant. It completes its life cycle within one year and then dies.
So, the correct answer is 'Banana plant'.
Multiple choice zoology reproduction in organisms parthenocarpic fruits parthenogenesis the life cycle of plants

Which of the following describes the development of an egg without a sperm?

  1. Binary fission

  2. Budding

  3. Spore formation

  4. Vegetative propagation

  5. Parthenogenesis
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Parthenogenesis may be defined as the development of female gamete into a new individual without fertilization. The megaspore mother cell undergoes the usual meiotic division to form haploid egg and embryo develops from the egg without fertilization.

So, the correct answer is option E.

Multiple choice zoology reproduction in organisms parthenocarpic fruits parthenogenesis the life cycle of plants

Parthenogenesis is connected with

  1. Sexual reproduction

  2. Asexual reproduction

  3. Regeneration

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

Parthenogenesis is the development of an embryo from an unfertilized egg or if a spermatozoa does penetrate the egg, there is no union of male and female pronuclei. It is a mode of asexual reproduction. On the basis of divison, it is of two types- apomictic parthenogenesis and automictic parthenogenesis.

In apomictic parthenogenesis, the mature egg cells are produced by mitotic divisions, and these cells directly develop into embryos. The offsprings produced are full clones of the mother.
In automictic parthenogenesis, the mother cell undergoes meiosis and produces haploid offspring which are half clone of the mother cell.

So, the correct answer is option B.

Multiple choice zoology reproduction in organisms parthenocarpic fruits parthenogenesis the life cycle of plants

Formation of an organism from a single, male gamete without fusion with egg is an example of

  1. Parthenogenesis

  2. Apogamy

  3. Apospory

  4. Parthenocarpy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
• Parthenogenesis is the development of female gamete or sometimes male gamete, without fertilization.
• Apogamy is the formation of a sporophyte from the gametophyte without the fusion of gametes.
• Apospory is the formation of gametophyte from the sporophytic cells without the formation of spores.
• Parthenocarpy is the formation of fruits without fertilization in which unfertilized egg develops into a fruit.
Hence, the formation of an organism from single male gamete without fusion with the egg is called parthenocarpy.
So, the correct answer is A.