Class 12th Biology 2011 Set3 Delhi Board Paper Solution
Question 10
Differentiate between albuminous and non-alburninous seeds, giving one example of each.
Answer
Sexual reproduction among angiosperm plants results in the formation of seeds, inside of fruit. Dissection of seed suggests that it consist of seed coat, cotyledon & embryo axis. Matured seeds are classified into two type based on the reserve food material present in them that is-
1. Non- albuminous
2. Albuminous
Non- albuminous – this type of seed completely consumes the nutritive endosperm during their stages of embryo development. e.g pea & groundnut
Albuminous seed – this type of seed retain or restore some part of endosperm during embryonic development. e.g., maize, barley, castor & sunflower
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:- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.
- Q:- Why is the offspring formed by asexual reproduction referred to as clone?
- Q:- Differentiate between gametogenesis from embryogenesis.
- Q:- Draw a labeled diagram of male reproductive system.
- Q:- What is meant by the term breed? What are the objectives of animal breeding?
- Q:- What is the ecological principle behind the biological control method of managing with pest insects?
- Q:-
Practise drawing various animals and plants.
- Q:- Give an account of energy flow in an ecosystem.
- Q:- A diploid organism is heterozygous for 4 loci, how many types of gametes can be produced?
- Q:- What would be the molar concentration of human DNA in a human cell? Consult your teacher.