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Question
Give reason for the following:
Some organisms like honey bees are called parthenogenetic animals
Solution
Among honey bees, the queen bee and worker bees develop from fertilized eggs whereas the drones develop from unfertilized eggs. Hence the honey bees are parthenogenetic animals showing incomplete parthenogenesis.
RELATED QUESTIONS
Complete the following table to get the differences between asexual and sexual reproduction:
| Characteristics | Asexual Reproduction | Sexual Reproduction |
| Number of parents involved | ........................... | .............................. |
| Type of cells involved | Somatic cells | Germ cells |
| Type of cell division | ............................ | Meiosis and mitosis |
Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?
What is amphimixis?
The number of nuclei present in a zygote is ______.
Each sperm is a single cell.
A new human individual develops from a cell called gamete.
An embryo is made up of a single cell.
Explain how, in sexually reproducing organisms, the number of chromosomes in the progeny is maintained.
What is the other name of sex cells?
What is the name of sex cells (other than gametes)?
The correct sequence of organs in the male reproductive system for the transport of sperms is:
(a) testis → vas deferens → urethra
(b) testis → ureter → urethra
(c) testis → urethra → ureter
(d) testis → vas deferens → ureter
The offsprings formed as a result of sexual reproduction exhibit more variations because ______
Define the term Implantation.
Define the term Metamorphosis.
Mention the common method of reproduction in Amoeba.
Answer in one sentence.
Which glands contribute fluids to the semen?
Explain the histological structure of testis.
Answer the following question.
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Identify the labels from the given diagram.
Write an account of the seminal vesicle and bulbourethral gland in the male reproductive system.
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Regeneration in lizard and Planaria
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