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प्रश्न
Multiple choice question.
Which of these is the male reproductive organ in humans?
पर्याय
sperm
seminal fluid
testes
ovary
उत्तर
testes
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संबंधित प्रश्न
Draw a diagram of DNA showing genes.
State the importance of DNA copying.
Why is variation beneficial to the species but not necessarily for the individual?
A spore-producing organism is ______.
Name two animals which reproduce asexually.
Which of the following organisms reproduce by sexual method and which by asexual method?
Amoeba, Cats, Humans, Hydra, Birds
Fill in the following blank with suitable word :
The union of a sperm nucleus with an egg nucleus is known as.......... and results in a .........egg.
Find the odd-one out, giving reason.
Gamete, budding, fragmentation, regeneration.
Write the full form of DNA.
Name the part of the cell where DNA is located?
Explain the role of DNA in the process of reproduction of the cell.
Name the factors which take part in this process.
Answer the following question.
The growing size of the human population is a cause of concern for all people. The rate of birth and death in a given population will determine its size. Reproduction is the process by which organisms increase their population. The process of sexual maturation for reproduction is gradual and takes place while general body growth is still going on. Some degree of sexual maturation does not necessarily mean that the mind or body is ready for sexual acts or for having and bringing up children. Various contraceptive devices are being used by human beings to control the size of the population.
(a) List two common signs of sexual maturation in boys and girls.
(b) What is the result of reckless female foeticide?
(c) Which contraceptive method changes the hormonal balance of the body?
(d) Write two factors that determine the size of a population.
Multiple choice question.
The ploidy level is not the same in ______.
What is hilum with respect to ovule?
Which is the most common type of endosperm in angiospermic families?
Draw a well labelled diagram of T.S. anther.
Explain the term reproduction.
The term metamorphosis is not used while describing human development. Why?
