In binary fission, a single cell divides into two equal halves. Amoeba and Bacteria divide by binary fission. In multiple fission, a single cell divides into many daughter cells simultaneously. Amoeba and Plasmodium divide by multiple fission. For more answers visit to website: https://www.tiwariacaRead more
In binary fission, a single cell divides into two equal halves. Amoeba and Bacteria divide by binary fission.
In multiple fission, a single cell divides into many daughter cells simultaneously. Amoeba and Plasmodium divide by multiple fission.
Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. ORead more
Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult.
For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. Only few variants that are resistant to heat would be able to survive. However, if these variants were not there, then the entire species of bacteria would have been destroyed.
Thus, these variants help in the survival of the species. However, all variations are not necessarily beneficial for the individual organisms.
Living organisms reproduce for the continuation of a particular species. It helps in providing stability to the population of species by producing a new individual that resembles the parents. This is the reason why cats give birth to only cats or dogs give birth to only dogs. Therefore, reproductionRead more
Living organisms reproduce for the continuation of a particular species. It helps in
providing stability to the population of species by producing a new individual that
resembles the parents. This is the reason why cats give birth to only cats or dogs give
birth to only dogs. Therefore, reproduction provides stability to populations of dogs or cats
or any other species.
The testes are the male reproductive organs that are located outside the abdominal cavity within a pouch called scrotum. Functions of testes: • Produce sperms • Produce a hormone called testosterone, which brings about secondary sexual characters in boys. For more answers visit to website: https://wRead more
The testes are the male reproductive organs that are located outside the abdominal cavity
within a pouch called scrotum.
Functions of testes:
• Produce sperms
• Produce a hormone called testosterone, which brings about secondary sexual
characters in boys.
Take two small beakers and label them as A and B. Fill beaker A with water. Now make a cylindrical-shaped roll from a filter paper and keep it as a bridge between beaker A and beaker B, as shown in the figure. Attach few germinating seeds in the middle of the filter paper bridge. Now, cover the entiRead more
Take two small beakers and label them as A and B. Fill beaker A with water. Now make a cylindrical-shaped roll from a filter paper and keep it as a bridge between beaker A and beaker B, as shown in the figure. Attach few germinating seeds in the middle of the filter paper bridge. Now, cover the entire set-up with a transparent plastic container so that the moisture is retained.
Observation:
The roots of the germinating seeds will grow towards beaker A.This experiment demonstrates the phenomenon of hydrotropism
How does binary fission differ from multiple fission?
In binary fission, a single cell divides into two equal halves. Amoeba and Bacteria divide by binary fission. In multiple fission, a single cell divides into many daughter cells simultaneously. Amoeba and Plasmodium divide by multiple fission. For more answers visit to website: https://www.tiwariacaRead more
In binary fission, a single cell divides into two equal halves. Amoeba and Bacteria divide by binary fission.
In multiple fission, a single cell divides into many daughter cells simultaneously. Amoeba and Plasmodium divide by multiple fission.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-8/
Why is variation beneficial to the species but not necessarily for the individual?
Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. ORead more
Variations are beneficial to the species than individual because sometimes for a species, the environmental conditions change so drastically that their survival becomes difficult.
For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. Only few variants that are resistant to heat would be able to survive. However, if these variants were not there, then the entire species of bacteria would have been destroyed.
Thus, these variants help in the survival of the species. However, all variations are not necessarily beneficial for the individual organisms.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-8/
How does reproduction help in providing stability to populations of species?
Living organisms reproduce for the continuation of a particular species. It helps in providing stability to the population of species by producing a new individual that resembles the parents. This is the reason why cats give birth to only cats or dogs give birth to only dogs. Therefore, reproductionRead more
Living organisms reproduce for the continuation of a particular species. It helps in
providing stability to the population of species by producing a new individual that
resembles the parents. This is the reason why cats give birth to only cats or dogs give
birth to only dogs. Therefore, reproduction provides stability to populations of dogs or cats
or any other species.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-8/
What are the functions performed by the testis in human beings?
The testes are the male reproductive organs that are located outside the abdominal cavity within a pouch called scrotum. Functions of testes: • Produce sperms • Produce a hormone called testosterone, which brings about secondary sexual characters in boys. For more answers visit to website: https://wRead more
The testes are the male reproductive organs that are located outside the abdominal cavity
within a pouch called scrotum.
Functions of testes:
• Produce sperms
• Produce a hormone called testosterone, which brings about secondary sexual
characters in boys.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-8/
Design an experiment to demonstrate hydrotropism.
Take two small beakers and label them as A and B. Fill beaker A with water. Now make a cylindrical-shaped roll from a filter paper and keep it as a bridge between beaker A and beaker B, as shown in the figure. Attach few germinating seeds in the middle of the filter paper bridge. Now, cover the entiRead more
Take two small beakers and label them as A and B. Fill beaker A with water. Now make a cylindrical-shaped roll from a filter paper and keep it as a bridge between beaker A and beaker B, as shown in the figure. Attach few germinating seeds in the middle of the filter paper bridge. Now, cover the entire set-up with a transparent plastic container so that the moisture is retained.
Observation:
The roots of the germinating seeds will grow towards beaker A.This experiment demonstrates the phenomenon of hydrotropism
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/