What are gonads and their function?

Important Questions on Reproduction in Organisms

EASY

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Name a plant which flowers every twelve years.

EASY

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

How many chromosomes are present in meiocytes of a fruit fly?

HARD

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

How is the chromosomal number maintained in sexually reproducing organisms?

EASY

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Define the following:

Amenorrhea

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

If the haploid number of chromosomes in a plant is 20, how many chromosomes will be present in the cells of the shoot tip?

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Give a significant point of  difference between the oestrous cycle and menstrual cycle.

EASY

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

What is seasonal breeder? Give an example.

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

How does the progeny formed from asexual reproduction differ from those formed by sexual reproduction?

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Define external fertilization. Mention its disadvantages.

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be:

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Which is a better mode of reproduction: sexual or asexual? Why?

EASY

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

State the difference between external and internal fertilization.

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Differentiate between gametogenesis and embryogenesis.

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Why are the offspring of oviparous animals at a greater risk as compared to offspring of viviparous animals?

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

What is a bisexual flower? Collect five bisexual flowers from your neighborhood and with the help of your teacher find out their common and scientific names.

EASY

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?

MEDIUM

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

How does the progeny formed from asexual reproduction differ from those formed by sexual reproduction?

EASY

Biology>Reproduction>Reproduction in Organisms>Sexual Reproduction in Higher Organisms

Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?