HARD
Earn 100

Draw a neat labelled diagram to explain plant fertilisation. Write few points on pollen grain.

Important Questions on How do Organisms Reproduce?

EASY
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Pollen grains of a fruiting plants species are deposited on the female flower by a pollinator. However, the female flower does not get fertilized. Which of the following observation is true?
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Define the term pollination. Differentiate between self-pollination and cross-pollination. What is the significance of pollination?
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Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Papaya is a dioecious species with XY sexual genotype for male and XX for female. What will be the genotype of the embryos and endosperm nuclei after double fertilisation?
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]
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction

Write the function of the following part in the human female reproductive system:

Oviduct

EASY
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
A temporary endocrine gland in the human body is
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Transmission tissue is characteristic feature of:
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Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Write a point of difference between pollination and fertilization.
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Science>Biology>How do Organisms Reproduce?>Sexual Reproduction

Write the function of the following part in the human female reproductive system:

Uterus

MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
What is carpel? Write the function of its various parts.
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.
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Describe in brief the structure and function of placenta.
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.
HARD
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
“Double fertilization” is a complex mechanism of flowering plants that is also unique to angiosperms. Choose the most appropriate statement from the options listed below that explains this phenomenon.
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
Why do variations arise in progeny during sexual reproduction?
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?

MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
List in proper sequence four steps of obtaining germinating dicot seeds.
MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction

Write the function of the following part in the human female reproductive system.

Ovary

MEDIUM
Science>Biology>How do Organisms Reproduce?>Sexual Reproduction
Write one main difference between the asexual and sexual modes of reproduction. Which species is likely to have comparatively better chances of survival - the one reproducing asexually or the one reproducing sexually? Give a reason to justify your answer.