Class 12th Biology 2017 Set2 Delhi Board Paper Solution
Question 1
What is ‘fitness of an individual’ according to Darwin?
Answer
According to the Darwin, it refers to ultimately and only to reproductive fitness. Those who are better fit in an enviroenment leave more progeny than others.
Popular Questions of Class 12th biology
- Q:- What is spermatogenesis? Briefly describe the process of spermatogenesis.
- Q:- Why is reproduction essential for organisms? Answer
- Q:- Write a short note on
(a) Adaptations of desert plants and animals
(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
(e) Effect of temperature or water scarcity and the adaptations of animals. - Q:- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.
- Q:- What is DNA fingerprinting? Mention its application.
- Q:- What is oogenesis? Give a brief account of oogenesis.
- Q:- Describe the structure of a seminiferous tubule.
- Q:- What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.
- Q:- With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
- Q:- Explain the Law of Dominance using a monohybrid cross.
Recently Viewed Questions of Class 12th biology
- Q:- Draw a labeled diagram of male reproductive system.
- Q:- What are transgenic bacteria? Illustrate using any one example.
- Q:- How do biofertilisers enrich the fertility of the soil?
- Q:- What is bagging technique? How is it useful in a plant breeding programme?
- Q:- In which food would you find lactic acid bacteria? Mention some of their useful applications.
- Q:- Can we call human evolution as adaptive radiation?
- Q:- What is meant by emasculation? When and why does a plant breeder employ this technique?
- Q:- How many eggs do you think were released by the ovary of a female dog which gave birth to 6 puppies?
- Q:- Why is the offspring formed by asexual reproduction referred to as clone?
- Q:- How does the transmission of each of the following diseases take place?
(a) Amoebiasis
(b) Malaria
(c) Ascariasis
(d) Pneumonia