Differentiate between internal fertilization and external fertilization. Internal Fertilization: 1 Fusion of male and female gametes take place inside the body. 2 Less numbers of eggs are produced. 3 Examples: Cow, Dog, Human etc. External Fertilization: 1 Fusion of male and female gametes take placRead more
Differentiate between internal fertilization and external fertilization.
Internal Fertilization:
1 Fusion of male and female gametes take place inside the body.
2 Less numbers of eggs are produced.
3 Examples: Cow, Dog, Human etc.
External Fertilization:
1 Fusion of male and female gametes take place outside the body.
2 Large numbers of eggs are produced.
3 Examples: Frog, Fishes etc.
The transformation of the larva into an adult through drastic changes is called metamorphosis. Metamorphosis is a biological process which involves sudden and abrupt changes in the body structure of the animal by cell growth and differentiation. It is generally observed in amphibians and insects. ExRead more
The transformation of the larva into an adult through drastic changes is called metamorphosis. Metamorphosis is a biological process which involves sudden and abrupt changes in the body structure of the animal by cell growth and differentiation. It is generally observed in amphibians and insects.
Examples: frogs and butterflies.
Asexual reproduction is a mode of reproduction in which only one parent is involved to reproduce offspring. In asexual reproduction, the offsprings produced are exact copies of their parents. It is generally observed in very small sized organisms. Binary fission, Budding, Fragmentation etc. are theRead more
Asexual reproduction is a mode of reproduction in which only one parent is involved to reproduce offspring. In asexual reproduction, the offsprings produced are exact copies of their parents.
It is generally observed in very small sized organisms. Binary fission, Budding, Fragmentation etc. are the examples of asexual reproduction.
• Budding: In this mode, a part of the organism starts bulging out. Slowly it grows and develops into a separate individual. Examples: Hydra, yeast.
• Binary Fission: It is a type of asexual reproduction in which a single cell divides into two halves. Organisms that reproduce through binary fission are bacteria and Amoeba.
• Zygote is single cellular whereas foetus is a multicellular. • Well defined body parts are absent in zygote whereas in foetus body parts can be identified. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-9/
• Zygote is single cellular whereas foetus is a multicellular.
• Well defined body parts are absent in zygote whereas in foetus body parts can be identified.
Differentiate between internal fertilization and external fertilization.
Differentiate between internal fertilization and external fertilization. Internal Fertilization: 1 Fusion of male and female gametes take place inside the body. 2 Less numbers of eggs are produced. 3 Examples: Cow, Dog, Human etc. External Fertilization: 1 Fusion of male and female gametes take placRead more
Differentiate between internal fertilization and external fertilization.
See lessInternal Fertilization:
1 Fusion of male and female gametes take place inside the body.
2 Less numbers of eggs are produced.
3 Examples: Cow, Dog, Human etc.
External Fertilization:
1 Fusion of male and female gametes take place outside the body.
2 Large numbers of eggs are produced.
3 Examples: Frog, Fishes etc.
What is metamorphosis? Give examples.
The transformation of the larva into an adult through drastic changes is called metamorphosis. Metamorphosis is a biological process which involves sudden and abrupt changes in the body structure of the animal by cell growth and differentiation. It is generally observed in amphibians and insects. ExRead more
The transformation of the larva into an adult through drastic changes is called metamorphosis. Metamorphosis is a biological process which involves sudden and abrupt changes in the body structure of the animal by cell growth and differentiation. It is generally observed in amphibians and insects.
Examples: frogs and butterflies.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-9/
See lessIn which female reproductive organ does the embryo get embedded?
In walls of the uterus. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-9/
In walls of the uterus.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-9/
See lessDefine asexual reproduction. Describe two methods of asexual reproduction in animals.
Asexual reproduction is a mode of reproduction in which only one parent is involved to reproduce offspring. In asexual reproduction, the offsprings produced are exact copies of their parents. It is generally observed in very small sized organisms. Binary fission, Budding, Fragmentation etc. are theRead more
Asexual reproduction is a mode of reproduction in which only one parent is involved to reproduce offspring. In asexual reproduction, the offsprings produced are exact copies of their parents.
It is generally observed in very small sized organisms. Binary fission, Budding, Fragmentation etc. are the examples of asexual reproduction.
• Budding: In this mode, a part of the organism starts bulging out. Slowly it grows and develops into a separate individual. Examples: Hydra, yeast.
• Binary Fission: It is a type of asexual reproduction in which a single cell divides into two halves. Organisms that reproduce through binary fission are bacteria and Amoeba.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-9/
See lessGive two difference between a zygote and a foetus.
• Zygote is single cellular whereas foetus is a multicellular. • Well defined body parts are absent in zygote whereas in foetus body parts can be identified. https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-9/
• Zygote is single cellular whereas foetus is a multicellular.
• Well defined body parts are absent in zygote whereas in foetus body parts can be identified.
https://www.tiwariacademy.com/ncert-solutions/class-8/science/chapter-9/
See less