Read and download free pdf of CBSE Class 10 Science How do Organisms Reproduce Assignment Set B. Get printable school Assignments for Class 10 Biology. Class 10 students should practise questions and answers given here for Chapter 8 How Do Organisms Reproduce Biology in Class 10 which will help them to strengthen their understanding of all important topics. Students should also download free pdf of Printable Worksheets for Class 10 Biology prepared as per the latest books and syllabus issued by NCERT, CBSE, KVS and do problems daily to score better marks in tests and examinations
Assignment for Class 10 Biology Chapter 8 How Do Organisms Reproduce
Class 10 Biology students should refer to the following printable assignment in Pdf for Chapter 8 How Do Organisms Reproduce in Class 10. This test paper with questions and answers for Class 10 Biology will be very useful for exams and help you to score good marks
Chapter 8 How Do Organisms Reproduce Class 10 Biology Assignment
MCQ Questions for Class 10 Science Reproduction :-
Question. Hydra usually reproduces by:
(a) fragmentation and budding
(b) regeneration and budding
(c) multiple fission and fragmentation
Answer : B
Question. Identify the type of reproduction shown in picture
(c) Spore formation
(d) Vegetative propagation
Answer : A
Question. In the list of organisms given below, those that reproduce by the asexual method are
(a) (ii) and (iv)
(b) (i), (iii) and (iv)
(c) (i) and (iv)
(d) (ii), (iii) and (iv)
Answer : B
Question. A feature of reproduction that is common to Amoeba, leishmania and Spirogyra is that
(a) they reproduce asexually
(b) they are all unicellular
(c) they reproduce only sexually
(d) they are all multicellular
Answer : A
Question. In Spirogyra, asexual reproduction takes place by
(a) breaking up of filaments into smaller bits
(b) division of a cell into two cells
(c) division of a cell into many cells
(d) formation of young cells from older cells.
Answer : A
Question. Variations occur as a result of
(a) Asexual reproduction
(b) Vegetative propagation
(c) Sexual reproduction
Answer : C
Question. Which among the following does not reproduce by spore formation:
(a) Penicillium fungus
(b) Yeast fungus
(c) Mucor fungus
(d) Rhizopus fungus
Answer : B
Question. In a potato, vegetative propagation takes place by:
(c) Stem tuber
Answer : C
Question. Offspring formed by asexual method of reproduction have greater similarity among themselves because
(i) asexual reproduction involves only one parent
(ii) asexual reproduction does not involve gametes
(iii) asexual reproduction occurs before sexual reproduction
(iv) asexual reproduction occurs after sexual reproduction
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)
Answer : A
(B) Solanum tuberosum
(C) Arachis hypogea
(D) Allium cepa
(D) adventive embryony
(D) none of these
(B) 7 celled
(C) 6 called
(D) 5 celled
(B) presence of rectum
(D) requirement of low temperate for spermatogenesis
(B) ovary of frog
(C) ovary of cockroach
(D) ovary of mammals
(D) fallopian tube
(B) asexual reproduction
(D) Both A & B are correct
(B) female mammals
(C) male amphibians
(D) female amphibians
(C) golgi bodies
(B) find ovum
(D) higher activity
Answer : D
(A) Offspring are genetically identical
(B) It is rapid and economical method of reproduction
(C) It produces seedless fruits
(D) Disease of parent plant gets transferred to the offspring.
Answer : D
(a) The process of..............ensures continuity of life on earth.
(b) Plasmodium reproduces by the process of ............... fission whereas Paramecium reproduces by the process of .............. fission.
(c) Rose plants and sugar cane crop are usually grown by the ................. method.
(d) Vegetative reproduction of potato plants is done by using .................
(e) Strawberry plants are propagated by the natural........................ method.
Answer : (a) reproduction (b) multiple ; binary (c) cuttings (d) tubers (e) layering
Question. Which life process ensures that a plant or animal species will not disappear from this earth ?
Answer : Reproduction
Question. What is the name of the reproductive process :
(a) which involves two parents ?
(b) which involves only one parent ?
Answer : (a) Sexual reproduction (b) Asexual reproduction
Question. State whether the following statement is true or false : Spores produced by the bread mould plant are actually its seeds.
Answer : False
Question. Name the asexual method of reproduction in yeast.
Answer : Budding
Question. Name the asexual method of reproduction in (a) Hydra, and (b) Plasmodium.
Answer : (a) Budding: Budding is the asexual method of reproduction in Hydra.They reproduce by budding, when a small bud arises from the parent and seperates to form a new daughter Hydra. It is a type of mitotic division.
(b) Multiple fission : Plasmodium divides by multiple fission, which is a kind of asexual reproduction. The nucleus of the organism divides into multiple nuclei and each daughter nuclei share some cytoplasm of the parent cell and divides into many plasmodium parasites. This type of multiple fission is called schizogony.
Question. What is the name of asexual reproduction method in :
(i) Spirogyra, and (ii) Leishmania ?
Answer : (i) Spirogyra reproduces by fragmentation.
(ii) Leishmania reproduces by binary fission.
Question. Name the artificial propagation mehod used for the propagation of (a) rose plants, and (b) apple trees.
Answer : (a) Rose plants are artificially propagated through the method of cutting.
(b) Apple tree is artificially propagated through the method of grafting.
Question. Most of the plants reproduce by sexual method. Name two plants which can reproduce asexually.
Answer : Ferns and Mosses
Question. Which type of reproduction :
(a) involves gametes ?
(b) does not involve gametes ?
Answer : (a) Sexual reproduction (b) Asexual reproduction
Question. Name any two plants which are propagated by cuttings method.
Answer : Rose and grapes plants are propagated by the cutting method.
Question. Write down the different methods of asexual reproduction.
Answer : The different methods of asexual reproduction are:
Question. Why are budding, fragmentation and regeneration, all considered to be asexual type of reproduction ?
Answer : Because in all these methods of reproduction, new organisms (offsprings) are obtained from a single parent without the use of sex cells or gametes.
Question. State whether human beings reproduce by sexual method or asexual method.
Answer : Sexual method
Question. (a) Name two animals which reproduce sexually.
(b) Name two animals which reproduce asexually.
Answer : (a) Dogs and Cows
(b) Amoeba and Hydra
Question. Name one organism which reproduces by spore formation.’
Answer : Bread mould (Rhizopus fungus)
Question. Name the method by which Paramecium reproduces. Is this method sexual or asexual ?
Answer : Binary fission ; Asexual method
Question. Name two plants :
(a) which can be grown from their broken stems.
(b) which can be grown from their leaves.
Answer : (a) Bryophyllum and Money plant (b) Bryophyllum and Begonia
Question. Which artificial propagation method is used for the production of jasmine plants ?
Answer : layering
Question. Name the natural method by which strawberry plants are propagated.
Answer : Strawberry plants are propagated by layering.
Question. Name two plants which are propagated by layering method.
Answer : Jasmine and strawberry
Question : Name the tubules where the sperms are produced.
Answer : The seminiferous tubules are the site of the germination, maturation, and transportation of the sperm cells within the male testes.
Question : What is implantation?
Answer : implantation is the attachment of the embryo to inner lining of the uterus.
Question : Name the correct substrates for the following enzymes.
Answer : (a) Trypsin-Protein
Answer : The sexual act always has the potential to lead to pregnancy. Pregnancy will make major demands on the body and the mind of the woman and if she is not ready for it, her health will adversely affected. Therefore, adopting contraceptive methods are essential. Some contraceptive methods like condom also prevent spread of STDs and lethal diseases like HIVAIDS.
Question. How do bryophyllum reproduce?
Answer: Bryophyllum reproduce by budding in leaves
Question. What is implantation?
Answer: Placing of embryo in the uterine wall is called implantation
Question. Why do organisms reproduce?
Answer: Organisms reproduce to create more individuals like themselves.
Question. What are the various parts of human male reproductive system?
Answer: A pair of testis, a pair of vas deferens, prostrate glands, seminal vesicles, penis
Question. What is the basis for evolution?
Answer: The inbuilt tendency for variation during reproduction forms the basis of evolution.
Question. Which part of a cell contains information for inheritance of features in the form of DNA molecules?
Question. Name the type of reproduction in which
i. Single parent is involved
ii. Two parents involved
Answer: i. Asexual reproduction
ii. sexual reproduction
Question. The rates of __________ and ________in a given population determine its size.
Answer: Birth and death
Question. Name the non-reproductive part of rhizopus.
Question. What is gestation period?
Answer: The development of embryo inside the uterus for approximately nine month period is called gestation period
Short Answer Questions
Question : What are the functions performed by testis in human beings?
Answer: The function of testis is to produce sperms and male sex hormone called testosterone.
Question : What could be the reasons for adopting contraceptive methods?
Answer: The reasons for adopting contraceptive methods could be:
1. Protection from sexually transmitted diseases such as HIV-AIDS, gonorrhoea, syphilis, warts etc.
2. Restricting the number of children.
3. Sufficient gap between successive births.
4. Enjoying a good reproductive health.
5. Controlling population.
Question : Why does menstruation occur?
Answer: Menstruation occurs in females when the egg produced inside the cervix is not fertilized. Since the egg does not fuse with the male gamete, so the thick and soft lining of uterus having a lot of blood capillaries in it are not required. This unfertilized egg dies within a day and the lining breaks down shedding blood along with other tissues. This comes out of the vagina in the form of bleeding.
Question : Why is vegetative propagation practised for growing some types of plants?
Answer: The process by which some plants can reproduce asexually by their vegetative parts like roots, stems and leaves is called vegetative propagation. It has many advantages.
Plants raised by this method can bear flowers and fruits earlier than those produced from seeds. Plants that have lost capability to produce seeds like banana, orange, rose and jasmine can be propagated. All plants produced are genetically similar to the parent plant.
Question : What are the different methods of contraception?
Answer: Contraception is the method to avoid pregnancy. Various methods of contraception are as follows:
Physical Barrier Methods: Use of condoms, diaphragms, cervical caps can be used.
These prevent the entry of sperms into the female genital tract by acting as a barrier between them.
Chemical Methods: Oral pills can be used which change the hormonal balance and stop release of egg. Vaginal pills kill the sperms.
Surgical Methods: This includes vasectomy (sperm duct is removed) in males and tubectomy (removal of small portion of fallopian tube) in females.
Question : What are the advantages of sexual reproduction over asexual reproduction?
Answer: In asexual reproduction, the offspring is almost identical to the parent because they have the same gene as their parent. Thus, variation is not present.
Sexual reproduction involves fusion of male and female gametes. The offspring exhibits diversity of characters because they receive some genes from the mother and some from the father. The mixing of genes in different combinations; results in genetic variations. This variation leads to the continuous evolution of various species to produce various organisms.
Question : How are modes of reproduction different in unicellular and multicellular organisms?
Answer: Unicellular organisms have only one cell. There is no separate tissue for reproduction.
So, they can reproduce by the process of fission or budding. Multicellular organisms contain various cells and have separate system for reproduction. So, they can reproduce by both sexual and asexual methods.
Question : How does binary fission differ from multiple fission?
Answer: Binary Fission: An organism is divided into two individuals. Mitotic division takes place resulting in two identical individuals or daughter cells. e.g., Amoeba.
Multiple Fission: Mitotic division takes place. The nucleus divides repeatedly to form a number of equal sized and similar individuals, e.g., Plasmodium.
Question : (a) Write the function of following parts in human female reproduction system:
(i) Ovary (ii) Oviduct (iii) Uterus
(b) Describe in brief the structure and function of placenta.
Answer: (a) (i) Ovary: Release egg and female hormone estrogen
(ii) Oviduct: Transportation of ovum from ovary to uterus and it is a site of fertilization.
(iii) Uterus: Development of embryo
(b) Placenta: It is a disc embedded in uterine wall which contains villi on the embryo side of the tissue and blood space on mother side.
Function of placenta:
(i) Provides nourishment to embryo from mother’s blood.
(ii) Removal of waste embryo to mother’s blood.
Question : Define vegetative propagation. List its methods and advantages.
Answer : In vegetative propagation new plants are obtained from the parts of old plants-stem, leaves or root without the help of any reproductive organ.
Natural methods of vegetative propagation
Artificial Method of Vegetative Propagation
Advantages of vegetative propagation
(i)The new plant produced by artificial vegetative propagation will be exactly like parent plant.
(ii)The fruit trees grown from cutting or grafting start to bear fruits much earlier.
(iii)Many plants can be grown from just one parent plant.
(iv)We can also get seedless plant by artificial propagation.
Answer : Spore formation: The spores in fungi vary in shape. Spores are usually unicellular, thick walled, spherical. The thick walls provide protection till these come in contact with other surface and can begin to grow. Sometimes the spores may be multicellular also. Sometimes the spores are produced endogenously in special sac-like asexual reproductive bodies called sporangia. Spores in such cases are called sporangiospores. Spores on falling on ground or substratum grow new hypha, e.g. Rhizopus, Mucor and Penicillium.
Question : What are the different methods of contraception?
Answer : Different methods of contraception are –
a) Barrier method – In this method, a device used to prevent the entry of sperms in the female genital tract example – Condom, Diaphragm, Cervical caps.
b) Chemical method – In this method certain drugs (containing hormones) are used by the females. These drugs are avaiblabe in the form of pills. There are two kinds of pills commonly used for preventing pregnancies – oral pills and vaginal pills or creams.
c) Intrauterine contraceptive devices (IUCD’S) – IUCD like copper – T is placed in the uterus – IUCD prevent implantation of the fertilized ovum inside the uterus.
Question : What are the essential requisites for sexual reproduction?
Answer : Essential requisites for sexual reproduction are –
a) Transfer of germ cells – Specialized germ – cells have to fuse together, which can happen by either of the following modes –
(i) External release of germ cells – In flowering plant
(ii) Internal transfer of germ cells – In animal cells.
Requirement of special organs –
For example –
a) An erectile organ called penis
b) Organs which can carry the baby for long period
Question : What is AIDS? Name its causal organism. Mention its symptoms.
Answer : AIDS is a sexually transmitted disease. Its full form is acquired immune deficiency syndrome. It is a viral disease, caused by human immune deficiency virus. Its symptoms area) Destroys the immune system of body.
b) Persistent cough and fever.
c) Body attacked by other diseases like pneumonia, TB and certain cancers.
Question : Describe any 3 methods of asexual reproduction
Answer : Methods of asexual reproduction –
a) Primary fission – It is a type reproduction in which one parent organism divides into two new organisms. Firstly nucleus divide and then division of cytoplasm takes place.
b) Spore formation – A spore is a small microscopic structure with a thick wall. Spores are formed in a structure called sporangium. Nucleus inside sporangium divides repeatedly and produces many nuclei. Each nucleus is surrounded by cytoplasm and called spore.
c) Fragmentation – It is the breaking of an organism into two or more parts upon maturation, each of which grows to form a new individual.
Long Answer Questions
Question : Describe triples fusion in plants? Where does it occur? Draw a neat and clean well labeled diagram to support your answer.
Answer : After pollination, the pollen grains germinate n the stigma by producting pollen tube. This pollen tube is formed from inner wall of the pollen grain. It penetrates the stigma and passes through the style and enters the ovule through an opening called male gamete it releases two male gametes in the embryo sac. One male gamete fuses with egg cells and second fuses with two polar nuclei. The fusion of one male gamete with the egg cells is called syngamy. The fusion
of second male gamete with two polar nuclei is called triple fusion. This process occurs in ovary.
Question : Draw a well labeled diagram of female reproductive system and mention its part
b) Fallopian tubes – There are two fallopian tubes. It carries ova from ovary to the uterus. Fertilization occurs in fallopian tubes.
c) Uterus – Pear shaped hollow muscular organ. Fertilized ovum remains attached to the uterus wall.
d) Vagina – It is a narrow muscular tube. Its upper end is connected to the cervix of the uterus and lower end opens outside through an opening. It is a place for copulation.
|CBSE Class 10 Science Chemical Reactions and Equations Assignment|
|CBSE Class 10 Science Acids Bases and Salts Assignment Set A|
|CBSE Class 10 Science Acids Bases and Salts Assignment Set B|
|CBSE Class 10 Science Acids Bases and Salts Assignment Set C|
|CBSE Class 10 Science Metals and Non Metals Assignment Set A|
|CBSE Class 10 Science Metals and Non Metals Assignment Set B|
|CBSE Class 10 Science How do Organisms Reproduce Assignment Set A|
|CBSE Class 10 Science How do Organisms Reproduce Assignment Set B|
|CBSE Class 10 Science Heredity and Evolution Assignment Set A|
|CBSE Class 10 Science Heredity and Evolution Assignment Set B|
|CBSE Class 10 Science Heredity and Evolution Assignment Set C|
|CBSE Class 10 Science Human Eye and Colorful World Assignment Set A|
|CBSE Class 10 Science Human Eye and Colorful World Assignment Set B|
|CBSE Class 10 Science Human Eye and Colorful World Assignment Set C|
|CBSE Class 10 Science Our Environment Assignment Set A|
|CBSE Class 10 Science Our Environment Assignment Set B|
|CBSE Class 10 Science Our Environment Assignment Set C|
|CBSE Class 10 Science Assignment|
|CBSE Class 10 Science Assignments Collection|
|CBSE Class 10 Science Energy Crossword Puzzle Assignment|
More Study Material
CBSE Class 10 Biology Chapter 8 How Do Organisms Reproduce Assignment
We hope you liked the above assignment for Chapter 8 How Do Organisms Reproduce which has been designed as per the latest syllabus for Class 10 Biology released by CBSE. Students of Class 10 should download and practice the above Assignments for Class 10 Biology regularly. We have provided all types of questions like MCQs, short answer questions, objective questions and long answer questions in the Class 10 Biology practice sheet in Pdf. All questions have been designed for Biology by looking into the pattern of problems asked in previous year examinations.
Assignment for Biology CBSE Class 10 Chapter 8 How Do Organisms Reproduce
Our team of expert teachers have referred to NCERT book for Class 10 Biology to design the Biology Class 10 Assignments. If you practice at least one test paper daily, you will get higher marks in Class 10 exams this year. Daily practice of Biology course notes and related study material will help you to clear all your doubts and have stronger understanding of all concepts. You can download all Revision notes for Class 10 Biology also from www.studiestoday.com absolutely free of cost.
Chapter 8 How Do Organisms Reproduce Assignment Biology CBSE Class 10
All questions and their answers for the assignment given above for Class 10 Biology have been developed as per the latest curriculum and books issued for the current academic year. The students of Class 10 can rest assured that the best teachers have designed the questions of Biology so that you are able to revise the entire syllabus if you do the assignments. Lot of MCQ questions for Class 10 Biology have also been given in the worksheets and assignments for regular use. All study material for Class 10 Biology students have been given on studiestoday.
Chapter 8 How Do Organisms Reproduce Assignment CBSE Class 10 Biology
Regular assignment practice helps to get a more comprehensive understanding of Chapter 8 How Do Organisms Reproduce concepts. Assignments play a crucial role in understanding Chapter 8 How Do Organisms Reproduce in CBSE Class 10. Students can download all the assignments of the same chapter in Class 10 Biology in Pdf format. You can print them or read them online on your computer or mobile.
CBSE Biology Class 10 Chapter 8 How Do Organisms Reproduce Assignment
CBSE Class 10 Biology latest books have been used for coming up with the latest questions and solutions for the above assignment. If you have revised all concepts relating to Chapter 8 How Do Organisms Reproduce then you should attempt all questions given in the test sheets above. We have also provided lot of Worksheets for Class 10 Biology which you can use to further make your self stronger in Biology
You can download free Pdf assignments for CBSE Class 10 Biology Chapter 8 How Do Organisms Reproduce from StudiesToday.com
The Chapter 8 How Do Organisms Reproduce Class 10 Biology Assignments have been designed based on latest CBSE syllabus for Class 10 Biology issued for the current academic year
Yes, These printable assignments for Chapter 8 How Do Organisms Reproduce Class 10 Biology are free to download and print
All topics given in Chapter 8 How Do Organisms Reproduce Biology Class 10 Book for the current academic year have been covered in the given assignment
No, all Printable Assignments for Chapter 8 How Do Organisms Reproduce Class 10 Biology have been given for free and can be downloaded in Pdf format
Just click on the View or Download button below, then another window with the Pdf will be visible, just click on the Pdf icon to download the free assignments for Chapter 8 How Do Organisms Reproduce Class 10 Biology
Yes, apart from Biology you can download free assignments for all subjects in Class 10
Our team of expert teachers at studiestoday.com have provided all answers for the practice questions which have been given in Class 10 Biology Chapter 8 How Do Organisms Reproduce assignments