Telangana SCERT Class 10 Biology Chapter 6 Reproduction Solution

Telangana SCERT Class 10 Biology Chapter 6 Solution – Reproduction. Here in this post we provides Class 10 Biology Reproduction Telangana State Board Solution.  Telangana State Board English Class X Medium Students can download this Solution to Solve out Improve Your Learning Questions and Answers.

Telangana State Board Class 10 Biology Chapter 6 Reproduction Solution:

1) Why do fish and frog produce huge number of eggs each year ?

Ans – The fish and frog produce a huge number of eggs in each year, Because in fish and frog there is a external fertilization takes place. The female lay huge number of eggs in water and male release the millions of sperm on them. There are chance to fertilise more huge number of eggs or also chance to lost the eggs, hence the fish and frog producer huge number of eggs in each year.

2) Give example and explain what is meant by external fertilization?

Ans – The external fertilization occurs in most of the aquatic animals like fishes and amphibians. The female of fish or frogs lay huge number of eggs in water and male of fish and frog release the millions of sperm on them, There are more possibility to fertilise huge number of eggs. The union of male and emale gamete takes place out of the body of Organism called as external fertilization.

3) Write Difference between

  1. A) Grafting and layering B) Stamen and Carpel.

Ans A) Grafting

  • Branch of plant with at least one node is grafted on stock plant.
  • In the grafting type of reproduction 2 plants are used.
  • Technique used to produce plant having desirable characters.

Layering

  • The branch of plant bent in soil for produce a new plant.
  • In layering type of reproduction only one plant is used.
  • Technique used to produce same type of plant in a large number.
  1. B) Stamen
  • It is Male reproductive part of plant present in flower.
  • It is also called as Androecium .
  • It produce male sex cell called as pollen grain in anther .

Carpel

  • It is female reproductive part of plant.
  • It also called as gynoecium.
  • It produce female sex cell called ovules in ovary.

4) Explain the process of fertilization in plant.

Ans- The fertilization is the process of union of male and female gametes. for the process of fertilization there is a need to Fusion of male and female gametes. The male reproductive part anther release the pollen grain , it transfer via various means to the stigma of female reproductive organ that is gynoecium. This process is called as pollination. In the process fertilization the one of the two nuclei fuse with the egg cell forms zygote ,This process is known as fertilization. At the time of fertilization two polar nuclei combines to form single Fusion nucleus. The second male nucleus deposited in embryo sac by pollen tube and Unite with Fusion nucleus. The union of one nucleus with Egg cell and the second nucleus with Fusion nucleus called as double fertilization.

5) What are the different modes of asexual reproduction? Cite Them with example.

Ans – Asexual reproduction – Production of new offspring by involving single parent without involving gamete known as asexual reproduction. Following are the different modes of reproduction.

  1. A) Fission – Single celled Organism reproduce by splitting into two or more offspring by symmetrical manner. New Organism produced by binary fission, multiple fission . The example is paramecium, bacteria.
  2. B) Budding – The identical copy are produced by growth on body as a bud and it grows as individual plant after separation from mother, example is yeast.
  3. C) Fragmentation – Growing of Organism from a single piece of parent Organism. This is formed from any part of parent Organism. example is algae and fungi.
  4. D) Parthenogenesis – The Organism is developed from unfertilized gametes called as parthenogenesis. example is in banana ovary directly develops into fruit without fertilization hence banana food is seedless.
  5. E) Vegetative reproduction – New plants are developed from the vegetative plant part known as vegetative reproduction. The example is bryophyllum, stolon’s, bulbs etc.

7) How sperm cell adapted for their function?

Ans – Sperm is the male reproductive cell which is travel to the egg cell so as to fertile it. The head bearing acrosome helps to sperm to penetrating into the Ovum, for the movement of sperm the mitochondria produce energy. The long portion tail propel the sperm which helps in the travelling of sperm. After reaching sperm to ovum the acrosome helps in the penetrating layers of egg cell by dissolving membrane with chemicals. In such a way the sperm cell adopt their functions.

9) When the foetus is growing inside the uterus it need nutrients. what provide these nutrients?

Ans – When the foetus is growing inside the uterus it need nutrients. The thickness of inner layer of uterus increases gradually, it contains nutrition for the foetus growth. The placenta is tissue formed by the cell from the embryo and the cell of mother. The placenta develops at around 12 week of pregnancy and it helps in nourishment of embryo. The placenta play important role in providing the nourishment from mother to foetus.

10) Which type of substances are absorbed by foetus from the mother?

Ans – The foetus required nutrition for their development. The inner layer of uterus contain different nutrient substances which is essential for foetus growth. The foetus absorb oxygen and nutrient from mother via placenta. The blood flows through the membrane surrounded to the placenta. The essential nutrients along the oxygen and other essential nutrient are diffused in the foetus. The placenta plays very important role in nourishment of foetus from mother.

11) What is the job of amniotic sac?

Ans – The foetus grows in uterus. The amnion are developed surrounding to embryo. The amniotic fluid are present in the surrounded amnion. The embryo develops in this amniotic cavity filled with amniotic fluid. This plays very important role to protect embryo from minor mechanical injuries. The another role is amnion fluid keep the embryo moist. The Yolk sac edge folding of amnion united at allantois and it create long tube like structure. This formed structure connect the embryo with placenta. These are the main jobs or amniotic sac.

13) How does reproduction helps in providing stability to population of species?

Ans – The reproduction helps in providing stability to population of species . The growth , development and reproduction are the characteristics of living things, but it have limited life span and after completing the life span, it will dies. Reproduction provide stability and insure that the population of species keep on surviving by reproduction , by giving birth to new offspring of the same kind.

14) Write the difference between mitosis and meiosis.

Ans –

Mitosis –

  • Mitosis occurs in somatic cells.
  • There are same number of chromosome in daughter cell.
  • Chromosome number of daughter cell is same as the chromosome number of parent cell.
  • daughter cell have same character as parents cell.
  • It completed in only one phase.

Meiosis –

  • It occurs only in embryonic or reproductive cell.
  • There are half number of chromosomes in daughter cell.
  • Chromosome number of daughter cell is reduced to half of chromosome number of parent cell.
  • Daughter cell have combination off parents characters.
  • It completed in two phase that are meiosis – 1 or meiosis- 2.

16) All unicellular Organism undergo only mitotic cell division during the favourable condition. Do you support this statement? Why?

Ans – Yes I support to this statement because if the conditions are favourable all unicellular Organism divides mitotically and increase their population, It multiplies by the fission, budding and reproduced daughter cells results in increase in the population in favourable condition.

17) Vicky’s father want to grow a single plant having two desirable characters colourful flower and big fruits. What method will you suggest him and why?

Ans – I will suggest him the grafting method. Because in this method we can graft more than one scion plants on the rootstock of one plant . The grafting is used to obtain the plant having desirable characters. This method is used to propagating improved varieties and variation fruits and Flowers. In this method we graft between two plants with desirable characters of colourful flower and big fruit together on same plant.

18) Uproot an onion plant and take a thin section of its root tip. Stain it and observe under microscope. Draw as you see and identify the stages of the cell division.

Ans – When we take the thin section of root tips of uprooted onion plants and observing under microscope after staining we see the following stages of mitosis.

The division of nucleus called as karyokinesis is followed by the division of cytoplasm called as cytokinesis results in the formation of two daughter cells.

A) Prophase –

  • In prophase coiling of chromosomes takes place .
  • Chromosome become a visible and it forms chromatid by connecting to chromosomes at connecting point called as centromere.
  • Disappearance of nucleus membrane takes place in prophase

B) Metaphase –

  • Chromosome move toward equator of cell.
  • chromatid are attached to spindle fibre at centromeres.

C) Anaphase –

  • The chromatids are separated by splitting of centromere.
  • Chromatids goes toward poles due to the Contraction of spindle fibres which are attached to chromatics at centromere.

D) Telophase –

  • Elongation of chromatid takes place in the telophase of mitosis.
  • Chromatics become visible and replicate.
  • Daughter nuclei covered with nuclear membrane.
  • Due to nucleus division formation of two nuclei, it followed by division of cytoplasm, it results in the formation of two new cells.

19) Visit a nearby village and collect information how farmers grow sugarcane, flowering plants like chrysanthemum, Primrose and vegetables like stem tuber, plump guard etc. Make a report and present in class.

Ans – I was visited to nearest village and observe how farmer growth sugar cane, flowering plants like chrysanthemum, Primrose, and vegetables like stem tuber, plumguard etc.

A) Sugar cane – it drows by planting cuttings of sugar cane in row and farrows.

B) Chrysanthemum – cutting are used for plantation

C) Rose – grown by using stem cutting and layering

D) stem tuber are grown by using planting tubers

E) Plum guard – grow by using stem cutting

20) Collect information from school library or using Internet what vegetative method are followed in your district as well as in your state to propagate various plant of economic importance, Represent it in graph.

And – The vegetative propagation method followed in India or in our state are given below.

A) Natural propagation

1) Leaves – Bryophyllum

2) Stem – runners

3) Stolon – Jasmin, strawberry

4) Bulbs – onion

5) Corn – calacasia

6) Tuber – potato etc

B) Artificial vegetative propagation

1) Cutting – Rose , hibiscus

2) Layering – Jasmine

3) Grafting – mango, citrus, rose, Apple

21) Make a flow chart to show the cell cycle and explain cell division describing different stages of mitosis.

Ans – The cell cycle consist of two stages that is interface and mitotic phase.

Inter phase –> ( G1 phase ->S phase->G2 phase) → Mitotic phase.

The division of nucleus called as karyokinesis is followed by the division of cytoplasm called as cytokinesis results in the formation of two daughter cells.

E) Prophase –

In prophase coiling of chromosomes takes place .

Chromosome become a visible and it forms chromatid by connecting to chromosomes at connecting point called as centromere.

Disappearance of nucleus membrane takes place in prophase

F) Metaphase –

  • Chromosome move toward equator of cell.
  • chromatid are attached to spindle fibre at centromeres.

G) Anaphase –

  • The chromatids are separated by splitting of centromere.
  • Chromatids goes toward poles due to the Contraction of spindle fibres which are attached to chromatics at centromere.

H) Telophase –

  • Elongation of chromatid takes place in the telophase of mitosis.
  • Chromatics become visible and replicate.
  • Daughter nuclei covered with nuclear membrane.
  • Due to nucleus division formation of two nuclei, it followed by division of cytoplasm, it results in the formation of two new cells.

22) Draw neat labelled diagram of male and female reproductive system of plant.

23) Observe the following part of flowering plant prepare a note.

Ans – The figure given in the questions is the figure of structure of female reproductive part of flower. The female reproductive organ also known as carpel or pistil. It is mainly having three part that is stigma, style, ovary. Stigma is the hairy, sticky, flattened structure for receiving and trapping of pollen grain. The transfer of pollen grain from anther to stigma call as pollination. Hence this part of flower useful for pollination. The long tube-like connection between stigma and Ovary, the stalk like structure called style. The ovary contains ovules which is developed into embryo sack that contains egg cell or female gametes , after fertilization ovary develops into fruit and ovule into the seeds.

24) Prepare a flow chart to explain the process of sexual reproduction in plants..

Ans – The Sexual reproduction In plants start with the reproductive organ. The male reproductive system consist of anther. The pollen grains are produced in this anther and further it transfer to stigma in pollination. Female reproductive system consist of stigma, style, and ovary. The stigma is flattened, sticky, hairy structure responsible for trapping of pollen grain. Ovary contains ovules or female gametes. The pollination is the process in which pollen grains from anther is transferred to stigma of carpel. The trapped pollen grain on stigma produce pollen tube containing male gametes travel to ward ovary through stalk like structure called style. The ovary contains ovule and it develops into the embryos. The Pollen containing two male gametes one is generative cell and another is vegetative cell , which are travels with the help of pollen tube through style to word ovary, from these two male gametes one of the cell fuse with female gametes to produce zygote and other remaining one fuse with polar nuclei and it produces triploids such fertilization is known as double fertilization. The Fusion of male and female gametes called as fertilization, after fertilization ovary develops into fruit and ovules into the seeds. These developed seeds further used to produce new plant, in such a way that plant reproduce sexually.

25) Draw a neat labelled diagram to explain plant fertilization. write a few points on pollen grain.

Ans –

The pollen grain is male gametophyte produced in the male reproductive organ called as anther, The pollen grain are transferred to stigma called as pollination. The pollen grain produce long tube which carry the Male gamete toward ovary. They reached at ovary and Fusion of male and female gamete takes place called as fertilization. Pollen grain

  • Pollen grain are structure of make gametocyte produced in anther
  • After pollination pollen grain produce pollen tube to travel Male gametes
  • It is the powder grain like structure
  • It transfer through various agent from one flower to another at a time of cross pollination.

26) What would be the consequences if there is no meiosis in Organism that reproduce sexually.

Ans – The Organism are prodused by Sexual reproduction or asexual reproduction, there are two type of cell division first is mitosis and second one is meiosis. Those organisms reproduce sexually undergoes educational division and formed gametes are haploid in nature. These produced haploid contain half number of chromosome than their parent. If there is no meiosis in Organism there is no educational division , the every generation have double number of chromosome than their parent at every fertilization. Due to the increasing chromosome number it causes harmful changes in Organism. Changes in chromosome number results in changes in the character of Organism.

27) How will you appreciate cell division that helps in perpetuation of life?

Ans – Cell division is very important process that helps in perpetuation of life. The cell arises from pre existing cell, it indicate the important of cell division in the production of new cell. The new cell produced from the preexisting cell by cell division that is mitotic or meiotic cell division.

The new cell having the character of parent cell , It inherit the information and characteristics from their parents cell. The meiotic division is also known as educational division. It help in keeping chromosome number same during sexual reproduction by educational division. It results in accuracy of species and fulfill them with different characters. Thus the cell division is helps in perpetuation of life.

29) Conduct a seminar on child marriages and foeticide.

Ans – The child marriage is major problem in India and it is a problematic to child mother and his children’s . we know the how reproduction and childbirth is complicated. To avoid such complications we need to understand it and getting prepared for it. For marriage the girls need maturity both mentally and physical. In India there are many reasons for early child marriages such as illiteracy, poverty.

The girls after 18 years of age can said to be prepared for marriage, it means it is prepared for reproduction. 21% of teenage girls are die during the delivery. in most of the cases 18 age girls are not prepared for reproduction. Does the girl below 18 year is should not be married.

Nowadays many people detect the sex of child and abort female child. The foeticide is responsible for killing of foetus it results in decrease in male and female child ratio. There are social responsibility to prevent female foeticide.

“Stop female foeticide , save the girls child”

Choose the correct answer

1) The part of the female reproductive system that produce the eggs?

A) Ovary

B) Epididymis

C) Cervix

D) Fallopian tube

Ans- A) Ovary

2) The term that we used to describe a sperm cell fusing with an egg cell.

A) Fragmentation

B) Fermentation

C) Fertilization

D) Fusion

Ans – C) fertilization

3) Which part of the male reproductive system produces the sperm cell?

A) Vasdefrence

B) Epididymis

C) Seminiferous tubules

D) Scrotum

Ans- C) Seminiferous tubules

4) How does the sperm break through egg cell membrane? Choose the option you think is right.

A) Tears a hole in the membrane

B) Dissolve the membrane with chemicals

C) Bite through the membrane with teeth

D) squeezes through gaps in the membrane

Ans- B) Dissolve the membrane with chemicals

5) Why are egg cells larger than sperm cells? Choose the option you think is right.

A) Egg cells have more cells in them

B) Have food store to help growth after fertilization

C) Have thicker cell membrane

D) Have larger nuclei

Ans-B) Have food store to help growth after fertilization

7) Which of the following is the correct sequence of step in the human life cycle? choose the right option.

A) Babyhood, childhood, adolescence, adulthood

B) Childhood, babyhood, adulthood, adolescence.

C) Adolescence, babyhood, adulthood, childhood

D) None of this

Ans- A) Babyhood, childhood, adolescence, adulthood

Updated: April 1, 2021 — 10:48 pm

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  1. It helped me very much

  2. Please post the next lesson
    Iam waiting for it

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