Reproduction

Q1: During favourable conditions, Amoeba reproduces by

• multiple fission
• binary fission
• budding
• fragmentation

Q2: In a list of organisms given below which is reproduced by asexual method ?

• Banana
• Yeast
• Dog
• lion

Q3: Hydra usually reproduces by:

• fragmentation and budding
• regeneration and budding
• multiple fission and fragmentation
• regeneration

Q4: Which among the following is a unicellular organism that reproduces by budding:

• Hydra
• Planaria
• Yeast
• Spirogyra

Q5: A feature of reproduction that is common to Amoeba, Yeast and Spirogyra is that

• they reproduce asexually
• they are all unicellular
• they reproduce only sexually
• they are all multicellular

Q6: Offsprings formed by asexual method of reproduction have greater similarity among themselves because_______.

• Asexual reproduction involves two parent
• Asexual reproduction does not involve gametes
• Asexual reproduction occurs before sexual reproduction
• Asexual reproduction occurs before sexual reproduction

Q7: Tubectomy is carried out by blocking the

• oviduct
• uterus
• cervix
• vagina

Q8: Which among the following does not reproduce by spore formation:

• Penicillium fungus
• Yeast fungus
• Micro fungus
• Rhizopus fungus

Q9: The ability of a cell to divide into several cells during reproduction in Plasmodium is called

• budding
• multiple fission
• binary fission
• reduction division

Q10: The correct sequence of reproductive stages seen in flowering plants is _______

• Gamete, zygote, embryo, seedling
• zygote, gamete, embryo, seedling
• seedling, embryo, zygote, gametes
• gamete, embryo, zygote , seedling

Q11: Variations occur as a result of

• asexual reproduction
• vegetative propagation
• sexual reproduction
• regeneration

Q12: The rapid spreading of bread mould on slices of bread are due to: i. Presence of large number of spores in air ii. Presence of large number of thread-like branched hyphae iii. Presence of moisture and nutrients iv. Formation of round shaped sporangia

• (i) and (iii)
• (ii) and (iv)
• (i) and (ii)
• (iii) and (iv)

Q13: Bryophyllum can be propagated vegetatively by the

• stem
• leaf
• root
• flower

Q14: The number of chromosomes present in parents and offspring of a particular species remains constant due to ________.

• doubling of chromosomes during zygote formation
• Halving of chromosomes during gamete formation
• Doubling of chromosomes after gamete formation
• Halving of chromosomes after gamete formation

Q15: Fertilisation occurs in human female when the sperms and ovum reach simultaneously at

• fallopian tube
• uterus
• vagina
• cervix

Q16: The asexual reproduction in the Spirogyra involves:

• Breaking up of filaments into smaller bits
• Division of a cell into many cells
• Division of a cell into two cells
• Formation of a large number of buds

Q17: Vegetative propagation refers to formation of new plants from

• stem, flowers and fruits
• stem, leaves and flowers
• stem, roots and flowers
• stem, roots and leaves

Q18: In Rhizopus tubular structure bearing sporangia at their tips are called __________.

• filaments
• Rhizoids
• roots
• Hyphae

Q19: AIDS is a sexually transmitted disease caused due to an infection by a

• bacteria
• protozoa
• virus
• Plasmodium

Q20: Reason for the greater similarities among the offsprings produced by asexual reproduction, is: i. Asexual reproduction involves only one parent ii. Asexual reproduction involves two parents iii. Asexual reproduction involves gametes iv. Asexual reproduction does not involve gametes

• (i) and (ii)
• (i) and (iii)
• (ii) and (iv)
• (i) and (iv)

Q21: In a potato, vegetative propagation takes place by:

• root
• leaf
• stem tuber
• grafting

Q22: Which among the following is not the function of testis at puberty ?

• Formation of sperms
• Releasing testosterone
• ovulation
• release of seminal fluid

Q23: In the list of organisms given below, those that reproduce by the asexual method are i. banana ii. dog iii. yeast iv. Amoeba

• (ii) and (iv)
• (i), (iii) and (iv)
• (i) and (iv)
• (ii), (iii) and (iv)

Q24: The process of the division of cell into several cells during reproduction in Plasmodium is termed as:

• Fragmentation
• Budding
• Multiple fission
• Binary fission

Q25: Vegetatively propagated plants

• do not bear roots
• do not bear buds
• are genetically similar
• are genetically dissimilar

Q26: Length of the pollen grain depends upon the distance between ________.

• pollen grain and upper surface of stigma
• pollen grain on upper surface of stigma and ovule
• pollen grain in anther and upper surface of stigma
• upper surface of stigma and lower part of style

Q27: The number of chromosomes in parents and offspring of a particular species remains constant due to:

• Doubling of chromosomes after zygote formation
• Halving of chromosomes during gamete formation
• Doubling of chromosomes after gamete formation
• Halving of chromosomes after gamete formation

Q28: Spirogyra reproduce by

• budding
• fragmentation
• regeneration
• fission

Q29: The ability of cell to divide into several cells during reproduction in plasmodium is called __________.

• budding
• reproductive division
• Multiple fission
• Binary fission

Q30: 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

• (i) and (ii)
• (i) and (iii)
• (ii) and (iv)
• (iii) and (iv)

Q31: A Planaria worm is cut horizontally in the middle into two halves P and Q such that the part P contains the whole head of the worm. Another Planaria worm is cut vertically into two halves R and S in such a way that both the cut pieces R and S contain half head each. Which of the cut pieces of the two Planaria worms could regenerate to form the complete respective worms?

• Only P
• Only R and S
• P, Rand S
• P, Q, R and S

Q32: In Rhizopus, tubular thread like structures bearing sporangia at their tips are called

• filaments
• hyphae
• rhizoids
• roots

Q33: Asexual reproduction takes place through budding in _______.

• Amoeba
• yeast
• plasmodium
• leishmania

Q34: Characters that are transmitted from parents to offspring during reproduction show

• only similarities with parents
• only variations with parents
• both similarities and variations with parents
• neither similarities nor variations

Q35: The number of chromosomes in both parents and offsprings of a particular species remains constant because:

• Chromosomes get doubled after zygote formation
• Chromosomes get doubled after gamete formation
• Chromosomes get halved during gamete formation
• Chromosomes get halved after gamete formation

Q36: Plants like banana, rose, jasmine, orange have lost the capacity to produce

• seeds
• buds
• flower
• roots

Q37: The anther contains ________.

• sepals
• ovules
• carpel
• pollens

Q38: In Spirogyra, asexual reproduction takes place by

• breaking up of filaments into smaller bits
• division of a cell into two cells
• division of a cell into many cells
• formation of young cells from older cells.

Q39: The figure given alongside shows the human male reproductive organs. Which structures make sperms and seminal fluid?

• V makes sperms and X makes seminal fluid
• W makes sperms and Y makes seminal fluid
• X makes sperms and W makes seminal fluid
• Y makes sperms and V makes seminal fluid

Q40: The flower of the Hibiscus plant is

• bisexual
• unisexual
• neuter
• very small

Q41: In human females, an event that reflects onset of reproductive phase is :

• Growth of body
• change in voice
• changes in hair pattern
• menstruation

Q42: The ability of a cell to divide into several cells during reproduction in Plasmodium is called

• budding
• reduction division
• binary fission
• multiple fission

Q43: An organism capable of reproducing by two asexual reproduction methods one similar to the reproduction in yeast and the other similar to the reproduction in Planaria is:

• Spirogyra
• Hydra
• Bryophyllum
• Paramecium

Q44: The part of the flower which is present in the center of the flower is

• Sepals
• Petals
• Carpels
• Stamens

Q45: Which among the following is not sexually transmitted?

• AIDS
• hepatitis
• Syphilis
• Gonorrhoeic

Q46: Among the following select the statements that are true regarding the sexual reproduction in flowering plants? i. Fertilization is a compulsory event ii. It always results in the formation of zygote iii. Offspring formed are clones iv. It requires two types of gametes

• (i) and (iv)
• (i), (ii) and (iii)
• (i), (ii) and (iv)
• (ii), (iii) and (iv)

Q47: The seed that contains the future plant is called the

• cotyledons
• seed coat
• germ cells
• embryo

Q48: Which of the following is not the part of female reproductive system?

• ovary
• fallopian tube
• uterus
• vas deferens

Q49: The number of chromosomes in parents and offsprings of a particular species remains constant due to

• doubling of chromosomes after zygote formation
• halving of chromosomes during gamete formation
• doubling of chromosomes after gamete formation
• halving of chromosomes after gamete formation

Q50: Which among the following are not the functions of testes at puberty? i. Formation of germ cells ii. Secretion of testosterone iii. Development of placenta iv. Secretion of estrogen

• (i) and (ii)
• (i) and (iii)
• (ii) and (iv)
• (iii) and (iv)

Q51: The period of pregnancy is called

• gestation period
• incubation period
• ovulation
• menstruation period

Q52: During adolescence, several changes occur in human body. Mark one change that is associated with sexual maturity in boys?

• loss of milk teeth
• increase in height
• weight gain
• cracking of voice

Q53: Factors responsible for the rapid spread of bread mould on slices of bread are i. large number of spores ii. availability of moisture and nutrients in bread iii. presence of tubular branched hyphae iv. formation of round shaped sporangia

• (i) and (iii)
• (ii) and (iv)
• (i) and (ii)
• (iii) and (iv)

Q54: Which out of the following processes does not lead to the formation of clones:

• Fertilizations
• Fission
• Tissue culture
• Fragmentation

Q55: Length of pollen tube depends on the distance between

• pollen grain and upper surface of stigma
• pollen grain on upper surface of stigma and ovule
• pollen grain in anther and upper surface of stigma
• upper surface of stigma and lower part of style

Q56: Which of the following statements are true for flowers? i. Flowers are always bisexual ii. They are the sexual reproductive organs iii. They are produced in all groups of plants iv. After fertilisation they give rise to fruits

• (i) and (iv)
• (ii) and (iii)
• (i) and (iii)
• (ii) and (iv)

Q57: The ratio of number of chromosomes in a human zygote and a human sperm is:

• 2 : 1
• 3 : 1
• 1 : 2
• 1 : 3

Q58: The process of release of eggs from the ovary is called

• menstruation
• reproduction
• insemination
• ovulation

Q59: In human beings, the fertilization occurs in the

• uterus
• ovaries
• fallopian tubes
• vagina