Class 12 Biology - Chapter Reproduction in Organisms NCERT Solutions | Offspring formed due to sexual reproduct
Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?
Sexual reproduction involves the fusion of the male and the female gamete. This fusion allows the formation of new variants by the combination of the DNA from two (usually) different members of the species. The variations allow the individuals to adapt under varied environmental conditions for better chances of survival.
However, it is not always necessary that the offspring produced due to sexual reproduction has better chances of survival. Under some circumstances, asexual reproduction is more advantageous for certain organisms. For example, some individuals who do not move from one place to another and are well settled in their environment. Also, asexual reproduction is a fast and a quick mode of reproduction which does not consume much time and energy as compared to sexual 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:- Differentiate between gametogenesis from embryogenesis.
- Q:- Distinguish between asexual and sexual reproduction. Why is vegetative reproduction also considered as a type of asexual reproduction?
- Q:-
Define external fertilization. Mention its disadvantages.
- Q:- What is vegetative propagation? Give two suitable examples.
Popular Questions of Class 12 Biology
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- Q:-
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.
(k) The structure which provides vascular connection between fetus and uterus is called ____________. - Q:- What do you think is the significance of reproductive health in a society?
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10 Comment(s) on this Question
Nice Answer
nice answer
I think its too long answerð
I think its too long answerð
in animals with external fertilisation the eggs and sperms may not survive due to predators. so not always true
It is too long for short answer questions
where is the last part answer ie is this statement always true?????????????
Very long answer
Supervb answer
I think
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