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प्रश्न
In the sexual mode of reproduction, greater diversities are generated.
पर्याय
True
False
उत्तर
In the sexual mode of reproduction, greater diversities are generated: True
APPEARS IN
संबंधित प्रश्न
No two individuals are absolutely alike in a population. Why?
Write one difference between asexual and sexual mode of reproduction.
What is the effect of DNA copying, which is not perfectly accurate, on the reproduction process? How does the amount of DNA remain constant though each new generation is a combination of DNA copies of two individuals?
List three distinguish features between sexual and asexual types of reproduction, in tabular form.
The number of nuclei present in a zygote is ______.
A zygote is formed as a result of fertilisation.
An embryo is made up of a single cell.
Which species is likely to have better chances of survival - the one reproducing asexually or the one reproducing sexually? Justify your answer.
Fill in the following blank with suitable word :
The cells involved in sexual reproduction are called .............
State the advantages of sexual reproduction over asexual reproduction.
Write the various steps involved in the sexual reproduction in plants.
The figure given alongside shows the human male reproductive organs. Which structures make sperms and seminal fluid?
(a) V makes sperms and X makes seminal fluid
(b) W makes sperms and Y makes seminal fluid
(c) X makes sperms and W makes seminal fluid
(d) Y makes sperms and V makes seminal fluid
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
Define the term Implantation.
Multiple choice question. Tick (✓) the correct choice:
Butterfly in its development from larva to an adult shows
- multiplication
- metamorphosis
- fertilisation
- none of the above
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
Differentiate between the following:
External fertilisation and Internal fertilisation.
Mention the common method of reproduction in Amoeba.
Mention the common method of reproduction in Hydra.
Mention the common method of reproduction in Start fish.
What is sexual reproduction? List its four significances.
Sketch and label the diagram showing self- and cross-pollination.
Answer the following question.
Explain the process of fertilization in humans.
Answer in one sentence.
Outline the path of sperm upto the urethra.
Explain the histological structure of testis.
Answer the following question.
Explain the histological structure of ovary in human.
Write an account of the seminal vesicle and bulbourethral gland in the male reproductive system.
Choose the correct statement from the following:
Give reason for the following:
Some organisms like honey bees are called parthenogenetic animals
Name the phenomenon where the female gamete directly develops into a new organism with an avian example.
Match column -1 with column - II and select the correct option.
| Column - I | Column - II | ||
| 1. | Seminal vesicles | a. | Membranous urethra |
| 2. | Scrotum | b. | Thermoregulatory |
| 3. | Tunica vaginalis | c. | Fibro muscular pouches |
| 4. | Cowper's gland | d. | Peritoneal covering |
The end of vegetative phase in plants which marks the beginning of the reproductive phase can be easily seen in the higher plants when they come to ______.
______ is the first stage of sexual reproduction.
Reproduction is essentially a phenomenon that is not for survival of an individual but for the stability of a species. Justify.
Suggest a possible explanation why the seeds in a pea pod are arranged in a row, whereas those in tomato are scattered in the juicy pulp.
Which is a better mode of reproduction, sexual or asexual? Why?
Explain how stability of the DNA of the species is ensured in sexually reproducing organisms.
