How do organisms reproduce (Questions answer)
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March 18, 2016 |
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How do organisms reproduce?
VERY SHORT ANSWER
TYPE QUESTIONS (1 mark each)
1. Define
reproduction.
Ans –It is the process
of producing new organism of the same species by
existing organisms of a
species.
2. Define fertilization.
Ans- It is defined as the fusion of a male
gamete( sperm) with a female gamete(ova) to form a zygote during sexual
reproduction.
3.Name two type of
reproduction.
Ans-Two main type of
reproductions is asexual reproduction and sexual reproduction.
4. The anther
contains: a...Sepal b. ovules c. carpel d.. Pollen grains
Ans –Pollen grains
5. What method will
you use for growing jasmine and rose plant?
Ans—Artificial mode of
vegetative reproduction-layering and grafting are use for growing jasmine and
rose plant.
6. Define
menstruation.
Ans-The breakdown and
removal of inner thick and soft lining of uterus along with blood vessels in
the form of vaginal bleeding is called menstrual flow or menstruation.
7. Write the name of
male and female reproductive part of a flower.
Ans-Male reproductive
part is stamen, which consists of filament and anther. Female reproductive part
is carpel, which consists of ovary, style and stigma.
8. Where does the
fertilisation takes place in human female?
Ans—in oviduct.
9. Why do testes in mammals descend in
scrotum?
Ans-The location of
the scrotum regulates the temperature of the testes because sperm formation
requires a lower temperature than the body temperature
10. Name the type of
fission carried out by Amoeba.
Ans-Amoeba reproduces
by binary fission in which one cell divides into two daughter cells.
11.Name two sexually transmitted diseases.
Ans-Gonorrhoea and syphilis.
12. Name the male and female gonads and
what are the products they produce?
Ans-Male gonads-Testes, Products-Hormone
testosterone which stimulates the secretion of sperm from testes. Female gonads
–ovaries, Products-hormones oestrogen and progesterone, which stimulates the
secretion of eggs.
13.-Where
does fertilisation takes place in human female?
Ans-In Fallopian tube (oviduct).
14.What is vegetative propagation?
Ans--
The development of new plants from parts such as roots, stem and leaves, of the plant is called vegetative propagation.
15.
Expand AIDS,
Ans-
Acquired immune deficiency syndrome.
16.
Write the full form of IUCD.
Ans-- Intra Uterine Contraceptive Device .
17.
What is syngamy?
Ans—The fusion of
one male gamete with an egg to form zygote is called syngamy.
18. What is advantage of fruit
formation in plant?
Ans—Fruit formation helps in easy
dispersal of seed.
19.
What is ovulation?
Ans—The
release of ovum or the egg from the ovary is called ovulation.
20.What is menopause?
Ans-The permanent stoppage of menstruation at age of 45-50 years is
called menopause. \
21.
Which part of human female reproduction system is called ―birth canal‖ and the
―womb?‖
Ans –Vagina is called
the birth canal and the uterus is called the womb.
22. Define gestation period. What is the gestation period in
human?
Ans—The time period from the development of foetus inside the uterus
till birth is called gestation period. In humans, the gestation period lasts
for 9 months or 40 week or 280 days.
Also read.
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How do organisms reproduce?
VERY SHORT ANSWER
TYPE QUESTIONS (1 mark each)
1. Define
reproduction.
Ans –It is the process
of producing new organism of the same species by
existing organisms of a
species.
2. Define fertilization.
Ans- It is defined as the fusion of a male
gamete( sperm) with a female gamete(ova) to form a zygote during sexual
reproduction.
3.Name two type of
reproduction.
Ans-Two main type of
reproductions is asexual reproduction and sexual reproduction.
4. The anther
contains: a...Sepal b. ovules c. carpel d.. Pollen grains
Ans –Pollen grains
5. What method will
you use for growing jasmine and rose plant?
Ans—Artificial mode of
vegetative reproduction-layering and grafting are use for growing jasmine and
rose plant.
6. Define
menstruation.
Ans-The breakdown and
removal of inner thick and soft lining of uterus along with blood vessels in
the form of vaginal bleeding is called menstrual flow or menstruation.
7. Write the name of
male and female reproductive part of a flower.
Ans-Male reproductive
part is stamen, which consists of filament and anther. Female reproductive part
is carpel, which consists of ovary, style and stigma.
8. Where does the
fertilisation takes place in human female?
Ans—in oviduct.
9. Why do testes in mammals descend in
scrotum?
Ans-The location of
the scrotum regulates the temperature of the testes because sperm formation
requires a lower temperature than the body temperature
10. Name the type of
fission carried out by Amoeba.
Ans-Amoeba reproduces
by binary fission in which one cell divides into two daughter cells.
11.Name two sexually transmitted diseases.
Ans-Gonorrhoea and syphilis.
12. Name the male and female gonads and
what are the products they produce?
Ans-Male gonads-Testes, Products-Hormone
testosterone which stimulates the secretion of sperm from testes. Female gonads
–ovaries, Products-hormones oestrogen and progesterone, which stimulates the
secretion of eggs.
13.-Where
does fertilisation takes place in human female?
Ans-In Fallopian tube (oviduct).
Ans--
The development of new plants from parts such as roots, stem and leaves, of the plant is called vegetative propagation.
15.
Expand AIDS,
Ans-
Acquired immune deficiency syndrome.
Ans-- Intra Uterine Contraceptive Device .
17.
What is syngamy?
Ans—The fusion of
one male gamete with an egg to form zygote is called syngamy.
18. What is advantage of fruit
formation in plant?
Ans—Fruit formation helps in easy
dispersal of seed.
19.
What is ovulation?
Ans—The
release of ovum or the egg from the ovary is called ovulation.
20.What is menopause?
Ans-The permanent stoppage of menstruation at age of 45-50 years is
called menopause. \
21. Which part of human female reproduction system is called ―birth canal‖ and the ―womb?‖
Ans –Vagina is called
the birth canal and the uterus is called the womb.
22. Define gestation period. What is the gestation period in human?
Ans—The time period from the development of foetus inside the uterus
till birth is called gestation period. In humans, the gestation period lasts
for 9 months or 40 week or 280 days.
Also read.
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