EASY
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In humans, sperm production occurs in the organ .

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Important Questions on How do Organisms Reproduce?

MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Write a point of difference between a male gamete and a female gamete?
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Why do variations arise in progeny during sexual reproduction?
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Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Why does menstruation occur?
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Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
What do you understand by Cross-Pollination?
HARD
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Answer the following question:
Write the changes that occur in the age group 11 to 21 years in boys.
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Write two changes that occur in teenage boys during the period of Adolescence.
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction

The modes by which organisms reproduce depend on the body design of the organisms.

Observe the diagram given below and answer the questions:

Question Image

What is the role of the part marked ‘A’ ?

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Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
What are the functions of human testes? Write any two functions.
HARD
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
How is sex determined in the human beings?
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Write a point of difference between pollination and fertilization.
HARD
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Write about the changes that occur after fertilization in plants.
EASY
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Rewrite the following statements with suitable words in the blanks:
There are _____ pairs of chromosomes in human beings. [Write the value in digits]
HARD
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
What is function of testis in man?
HARD
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Attempt the following:
Draw a neat scientific diagram of the Female Reproductive System and label:
(a) Vagina
(b) Oviduct.
EASY
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
What are unisexual and bisexual flowers? Give examples.
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
What are the functions of testis in human being?
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Write names and functions of male and female sex hormones.
HARD
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction

Reproducing organisms create new individuals that look very much like themselves.

Observe the diagram given below and answer the question:

Question Image

What is the function of parts marked A and B?

EASY
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
State whether the following statement is true or false:
There are two sets of chromosomes in zygote.
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Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
A temporary endocrine gland in the human body is