Sexual Reproduction MCQs : This section focuses on the "Sexual Reproduction" in Biology Class 12. These Multiple Choice Questions (MCQs) should be practiced to improve the Biology Class 12 skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Reproduction is a life process which enables an organism to reproduce its own offspring.
C. Can be true or false
D. Can not say
Explanation: True, Reproduction is a life process which enables an organism to reproduce its own offspring.
How many types of reproduction?
Explanation: Based on this, reproduction can be classified into two types : Asexual reproduction and Sexual reproduction.
Reproduction can take place by ?
A. the participation of a single parent
B. the participation of a two parent
C. the participation of a no parent
D. Both A and B
Explanation: Reproduction can take place by the participation of a single parent or two parents.
A process where two parents participate in producing their offspring known as?
A. Asexual reproduction
B. Sexual reproduction
C. Bisexual reproduction
D. None of the above
Explanation: Sexual reproduction: A process where two parents participate in producing their offspring.
Once the haploid male and female gametes meet and fuse together to form a zygote, this is known as?
D. All of the above
Explanation: Once the haploid male and female gametes meet and fuse together to form a zygote, this is known as fertilization or syngamy. This can occur either outside the body called external fertilization or inside the body called internal fertilization.
Sexual reproduction consists of a set of events and can be divided into ________ stages.
Explanation: Sexual reproduction consists of a set of events and can be divided into three stages: Pre-fertilization, Fertilization, and Post-fertilization.
In which plant species is it difficult to define the different phases (juvenile, reproductive phase)?
Explanation: It is difficult to clearly distinguish between the different phases in perennial plants. Some plants exhibit unusual flowering phenomena. Some plants flower every year, there are some that flower every 10 years and some plants flower every 50 years. Neelakurinji is a flowering plant that flowers every 12 years.
Fertilization results in diploid zygote formation.
C. Can be yes or no
D. Can not say
Explanation: Yes, Fertilization results in diploid zygote formation.
Which type of plants flower only once?
Explanation: Monocarpic plants flower only once in its lifetime. They die after flowering. Annuals like marigold, wheat, paddy, biennials like radish, perennials like Bambusa tulda which flowers every 50-100 years, fruits and dies.
What is phase when the organism is old enough to reproduce known as?
A. Juvenile phase
B. Vegetative phase
D. Reproductive phase
Explanation: The phase when it is growing is known as the juvenile phase or the vegetative phase (in plants). The phase after that when the reproductive organs in the organism matures is known as the reproductive phase. Senescence is the phase when the plant starts deteriorating as it grows old and finally dies.