Advertisements
Advertisements
प्रश्न
The advantage that internal fertilisation has over external fertilisation is that in internal fertilisation :
(a) new off-springs are exactly like the parent
(b) production of large numbers of gametes is unnecessary
(c) copulation and fusion of gametes is passive
(d) fewer individuals are produced
उत्तर
(c) production of a large number of gametes is unnecessary.
In internal fertilisation, there is no need for the production of a large number of gametes as it provides a safe environment.
APPEARS IN
संबंधित प्रश्न
Which mode of reproduction gives rise to variation?
Give the importance of variation in survival of species.
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 |
Explain how, in sexually reproducing organisms, the number of chromosomes in the progeny is maintained.
What is the other name of sex cells?
Multiple choice question. Tick (✓) the correct choice:
Which of the following glands is responsible for bringing about changes during adolescence in boys and girls?
- pituitary
- adrenal
- thyroid
- testis
Mention the functions of Oviduct.
Describe the various stages in the life cycle of a butterfly.
Explain why variations are observed in the offsprings of sexually reproducing organisms?
Answer the following question.
Which is the function of male accessory glands?
