Question 1 What is fission? Question 2 Describe asexual reproduction in amoeba? Question 3 What is multiple fission? Question 4 Name few organism which show binary fission? Fission Many single celled organism like protozoa and bacteria just split into two identical halves during cell division,leading to the creation of new organism. For Ex:Amoeba,paramecium,leishmania. a)Binary Fission:The…
Read MoreCategory: How do organism Reproduce
Menstruation
Question 1 Define the term menstruation? Question 2 Define the term ovulation? Question 3 What is menstrual flow? Menstruation When a girl child is born,her ovaries contain thousand of immature egg which are contained in immature follicles. When a girl reaches puberty,then one follicle develops at a time to form mature egg. On maturing follicle…
Read MorePuberty
Question 1 What is puberty? Question 2 Define the term adolescence? Question 3 What common changes occur in girls during puberty? Question 4 What common changes occur in boys during puberty? Puberty The time between childhood and adulthood is called adolescence. The age at which sex hormones(or gametes)begin to be produced and boy and girl become…
Read MoreFemale Reproductive System
Question 1 Explain female reproductive system? Question 2 What are ovaries? Question 3 Name the female gametes in human being? Female Reproductive System It consist of Ovaries,oviduct,fallopian tubes,uterus,vagina. 1)Ovaries:They are oval shaped organ, inside abdominal cavity.There are 2 ovaries, makes egg or ova and sex hormones, composed of thousand of follicles.At puberty these follicles mature…
Read MoreMale Reproductive system
Question 1 Explain the male reproductive system? Question 2 Name the male sex hormone? Question 3 What are testes? Question 4 What is a scrotum? Question 5 What is a semen? Question 6 What are the male gonads in human being.Mention their function? Question 7 Explain why scrotum remains outside the body of human males?…
Read MoreReproduction in human beings
Question 1 Name the male and female gamete in humans? Question 2 What is a zygote? Question 3 Define the term fertilisation? Question 4 What is an embryo? Question 5 What is an internal fertilisation? Question 6 How does fertilisation take place in humans? Question 7 What is the average duration of human pregnancy? Reproduction…
Read MoreSexual Reproduction in flowering plants
Question 1 What are angiosperm? Question 2 Name the sex organs in plants? Question 3 Name the various parts of flower? Question 4 Mention the reproductive parts of a flower? Question 5 What is pollination? Question 6 Define cross pollination? Question 7 What are unisexual flowers.Give example? Question 8 What are bisexual flowers.Give example? Question…
Read MoreHow do organism reproduce
Question 1 Define the term reproduction? Question 2 Define asexual reproduction? Question 3 Define sexual reproduction? Question 4 What are the various methods of asexual reproduction? Question 5 Name the two types of reproduction? Question 6 Name the male and female gametes in animals? How do organism reproduce The production of new organism from existing…
Read MoreVegetative Propagation
Question 1 List few advantages of vegetative propagation? Question 2 What are the various methods of vegetative propagation? Question 3 Explain the cutting method of vegetative propagation?Give example? Question 4 Explain the layering method of vegetative propagation?Give example? Question 5 Explain the grafting method of vegetative propagation?Give example? Vegetative Propagation New plants are obtained from the parts of…
Read MoreFragmentation
Question 1 What is fragmentation? Question 2 How fragmentation take place in spirogyra? Fragmentation The breaking up of a body of a simple multicellular organism into two or more pieces on maturing,each of which grows to form a complete new organism is called fragmentation. For Ex:Spirogyra(a green filamentous algae plant found in ponds,lakes etc),sea anemones(marine…
Read MoreRegeneration
Question 1 Describe briefly regeneration in hydra? Regeneration The process of getting back a full organism from its body part is called regeneration. For Ex:Hydra,planaria(flatworm) Regeneration is carried out by specialised cells. These cells increase in number very quickly and make large number of cells From this mass of cell,different cells undergo changes to become…
Read MoreSpore Formation
Question 1 How does spore formation take place in Rhizopus? Question 2 Explain the structure of new plant on moist bread ? Spore Formation The parent plant produces hundreds of reproductive units called spores. When the spore case of plant burst then the spores spread into air.Under favourable conditions they germinate and produce new plant.…
Read MoreBudding
Question 1 What is budding? Question 2 Give example of animals which reproduce asexually by budding? Question 3 Describe the various steps of budding in hydra? Budding A small part of the body of parent organism grows out as a bud which then detaches and become a new organism. For Ex:Hydra,Yeast These organism use regenerating…
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