Class 12 Biology - Chapter Reproduction in Organisms NCERT Solutions | Distinguish between asexual and sexual r
Distinguish between asexual and sexual reproduction. Why is vegetative reproduction also considered as a type of asexual reproduction?
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Sexual reproduction |
Asexual reproduction |
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1 |
It involves the fusion of the male and female gamete. |
It does not involves the fusion of the male and the female gamete |
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2. |
It requires two (usually) different individuals. |
It requires only one individual. |
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3. |
The individuals produced are not identical to their parents and show variations from each other and also, from their parents. |
The individuals produced are identical to the parent and are hence, called clones. |
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4. |
Most animals reproduce sexually. Both sexual and asexual modes of reproduction are found in plants. |
Asexual modes of reproduction are common in organisms having simple organizations such as algae and fungi. |
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5. |
It is a slow process. |
It is a fast process. |
Vegetative propagation is a process in which new plants are obtained without the production of seeds or spores. It involves the propagation of plants through certain vegetative parts such as the rhizome, sucker, tuber, bulb, etc. It does not involve the fusion of the male and the female gamete and requires only one parent. Hence, vegetative reproduction is considered as a type of asexual reproduction.
More Questions From Class 12 Biology - Chapter Reproduction in Organasim
- Q:- Why is reproduction essential for organisms? Answer
- Q:- Differentiate between a zoospore and a zygote.
- Q:- Define
(a) Juvenile phase
(b) Reproductive phase
(c) Senescent phase. - Q:- Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?
- Q:- Why are offspring of oviparous animals at a greater risk as compared to offspring of viviparous animals?
- Q:- Why is the offspring formed by asexual reproduction referred to as clone?
- Q:- Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?
- Q:- Differentiate between gametogenesis from embryogenesis.
- Q:-
Define external fertilization. Mention its disadvantages.
- Q:- What is vegetative propagation? Give two suitable examples.
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Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
(b) Humans are__________. (oviparous/viviparous/ovoviviparous)
(c) Fertilization is __________ in humans. (external/internal)
(d) Male and female gametes are __________. (diploid/haploid)
(e) Zygote is __________. (diploid/haploid)
(f) The process of release of the ovum from a mature follicle is called__________.
(g) Ovulation is induced by a hormone called the __________.
(h) The fusion of male and female gametes is called _____________.
(i) Fertilisation takes place in _____________.
(j) Zygote divides to form _____________which is implanted in uterus.
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